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Honda2011–2024 Critical issues documented

Honda N-Box: common faults & what to check

Thinking about buying a used Honda N-Box (2011–2024) in New Zealand? We've documented 27 known faults for this model spanning engine, cooling, transmission, and electrical. Each researched and verified before it's published. The most serious issues here are rated critical. Every one is listed below with its symptoms and repair cost, and each has its own page with where to look and what to ask the seller. Free, no account needed.

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  • Odometer history
  • Money owing
  • Reported stolen
  • Ownership history
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  • NZ owned and operated

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27

Documented faults

Critical

Most serious

$400–$1,400

Typical repair

7

Systems covered

Which Honda N-Box are you looking at?

1 generation variant documented. Pick the shape you recognise: the faults, the servicing and the timeline below all narrow to it. Free, no account needed.

Now narrow it to the engine

A 1.8 and a 2.4 of the same car do not fail the same way, so the faults below narrow to the engine as well as the year. Free, no account needed.

Which engine is in it? These cover every year of this model.

0.66 petrol (kei)· 0.66 litre petrol

Start your free check on this Honda N-Box

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Honda N-Box

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Can't confirm for this car

Honda N-Box

Nothing has been narrowed yet, so nothing below is a claim about a particular car. Pick a year and an engine to see which faults apply.

Tell us the engine, or check the engine code on the car, before relying on this.

matched on no vehicle context

What to look out for

The checks worth doing on a Honda N-Box before you hand over any money. Every documented fault is listed below, each with its own page.

  • Serious issue

    Ask about oil change history and intervals — beyond 5000km significantly increases turbo risk.

    See why

    S07A Turbo Oil Return Pipe Blockage Causing Turbo Failure

    The Honda N-Box JF1/JF2 S07A 0.66T turbocharger oil return pipe is narrow and prone to sludge blockage from infrequent oil changes. When the return pipe blocks, oil cannot drain from the turbo bearing housing, starving the bearing of lubrication and causing turbo failure. With the small oil capacity of the S07A, oil changes every 3000-5000km are essential.

    What you would notice

    • Blue smoke from exhaust on startup from oil burning in the turbo bearing
    • Turbo whistle developing a grinding quality or changing pitch under boost

    Typically $600–$2,500 to put right.

  • Serious issue

    Check the Honda Japan recall completion sticker inside the engine bay or door jamb, or ask the seller for documentation.

    See why

    Denso Fuel Pump Impeller Failure (Recall)

    Honda Japan issued a large-scale recall covering multiple kei models including the N-Box JF3/JF4 (approximately 2017-2020 build dates) due to a faulty Denso-supplied in-tank electric fuel pump. The pump's resin impeller was manufactured out of specification, causing it to absorb fuel and swell. The swollen impeller contacts the pump housing, increasing current draw and causing the pump to slow or seize entirely. Affected vehicles may stall at speed or fail to restart. Grey imports that have not been presented to a Honda dealer in Japan prior to export, or have not had the recall performed in New Zealand, may still contain the faulty pump.

    What you would notice

    • Engine stalls suddenly at any speed without warning, and may not restart immediately
    • Hard starting, particularly when the fuel tank is less than quarter full
    • Absence of fuel pump priming hum when ignition is turned to 'on' position before cranking
    • Engine cuts out under sustained load such as motorway speeds or hill climbing
    • Check Engine light with fuel system pressure or pump circuit fault codes (P0087, P0230)

    Typically $0–$900 to put right.

  • Costly issue

    Drive the car at 30-50 km/h on a flat road with very light, steady throttle.

    See why

    CVT Belt Judder and Shudder Under Light Throttle

    The JF3/JF4 N-Box uses Honda's sub-compact CVT (continuously variable transmission) with a steel push-belt. Owners and workshop technicians in Japan have documented a characteristic shudder or judder sensation when the CVT is under light-load conditions — typically at 20-50 km/h during gentle acceleration. The cause is degraded CVT fluid losing its friction-modifying properties and/or belt slip under the low clamping pressures used at light load. Honda Japan issued a service procedure recommending CVT fluid replacement with Honda HMMF (Hybrid Multimatic Fluid) and, in some cases, a PCM (powertrain control module) software update to adjust clamping pressure maps.

    What you would notice

    • Vibration or shudder through the floor and seat at 20-50 km/h under light throttle, similar to driving over rumble strips
    • Judder disappears when accelerating firmly or decelerating, only present at steady light load
    • CVT fluid that is dark brown, burnt-smelling or contains metallic particles when checked
    • Occasional harsh engagement or 'clunk' when pulling away from a stop after the vehicle has been stationary
    • Transmission warning light in advanced belt-slip cases

    Typically $350–$3,800 to put right.

  • Costly issue

    Test drive and feel for rhythmic vibration during light acceleration from rest.

    See why

    CVT Belt Judder on Automatic

    N-Box JF CVT develops shudder from belt and pulley wear on urban short-trip examples. Honda HMMF fluid specification is critical.

    What you would notice

    • Rhythmic shudder or buzz during light acceleration from rest
    • CVT fluid darker than the correct Honda HMMF specification colour

    Typically $600–$3,500 to put right.

  • Costly issue

    Start the engine cold and listen immediately for a metallic rattling or slapping noise from the upper front of the engine near the cam cover.

    See why

    S07B Turbo Cold-Start Timing Chain Rattle

    The S07B 660cc turbo engine uses a short timing chain with a hydraulic tensioner that relies on oil pressure to maintain chain tension. On cold starts, especially after extended oil change intervals or in low-temperature conditions, the tensioner takes several seconds to build pressure, allowing momentary chain slack. Repeated cycles stretch the chain and can eventually cause the chain to skip a tooth on the camshaft sprocket, leading to loss of valve timing and engine damage.

    What you would notice

    • Metallic rattling or clattering noise immediately on cold start, from upper engine, lasting 3-15 seconds
    • Check Engine light with cam timing position codes (P0341, P0345 or similar VVT cam sensor faults)
    • Rough idle or hesitation after cold start until engine warms
    • Oil pressure warning light flickering at idle on cold start in advanced cases
    • Visible metallic swarf or debris in oil when drained

    Typically $900–$2,200 to put right.

  • Costly issue

    Start the engine fully cold (overnight soak preferred) and listen for metallic rattle from the timing cover on the front of the engine.

    See why

    S07A Timing Chain Tensioner Wear at Cold Start

    The S07A 660cc turbocharged engine uses a hydraulic timing chain tensioner that loses oil-pressure retention after extended cold soaks. On a fully cold start the tensioner fails to take up chain slack immediately, producing a metallic rattle or ticking from the timing cover for 2-5 seconds until oil pressure builds. Repeated cold-start events accelerate chain stretch and guide wear. Prolonged neglect allows chain slack to accumulate, risking valve-timing displacement, camshaft code faults, or catastrophic chain failure at high revs. The issue is worsened by extended oil-change intervals or low-viscosity oil use in a high-mileage engine.

    What you would notice

    • Metallic rattle or ticking from engine top end on cold start
    • Noise clears within 2-5 seconds once oil pressure builds
    • Rattle absent on warm re-start
    • MIL for VTC or camshaft timing codes in advanced cases
    • Visible timing chain tensioner oil seepage

    Typically $850–$2,200 to put right.

See all 27 documented issuesEverything researched for the Honda N-Box, including 3 rated critical.
Depends on which engine this Honda N-Box has — 27Each of these is documented for one particular engine. Pick the year and engine above to see which of them apply.
Engine, transmission & cooling13

01S07A Turbo Oil Return Pipe Blockage Causing Turbo Failure

Ask about oil change history and intervals — beyond 5000km significantly increases turbo risk.petrol2011–2017Engine
CommonEngine $600–$2,500 to fix

Can't confirm for this car

The Honda N-Box JF1/JF2 S07A 0.66T turbocharger oil return pipe is narrow and prone to sludge blockage from infrequent oil changes. When the return pipe blocks, oil cannot drain from the turbo bearing housing, starving the bearing of lubrication and causing turbo failure. With the small oil capacity of the S07A, oil changes every 3000-5000km are essential.

Symptoms to notice

  • Blue smoke from exhaust on startup from oil burning in the turbo bearing
  • Turbo whistle developing a grinding quality or changing pitch under boost

What to check

  1. Ask about oil change history and intervals — beyond 5000km significantly increases turbo risk.
  2. Check for blue smoke from exhaust on startup.
  3. Test turbo shaft play by reaching into the intake and wiggling the compressor wheel — more than 2mm lateral play indicates bearing wear.

Where to look: S07A turbo oil return pipe and turbocharger mounted on the engine

Parts involved: Turbocharger.

Ask the seller

  • “Has the s07a turbo oil return pipe been inspected or repaired?”

02S07B Water Pump Premature Failure

petrol2017–2024Cooling
OccasionalCooling $500–$1,400 to fix

Can't confirm for this car

The S07B engine uses an engine-driven water pump with an impeller that is documented as prone to premature failure through impeller-to-shaft separation or seal weeping. The plastic impeller can debond from the metal shaft, causing the pump to spin without moving coolant. The engine then overheats without obvious external coolant loss, because the pump is not leaking — it simply fails to circulate coolant. This failure mode is reported more frequently on the turbo variant due to higher thermal loads. Left undetected, the result is head gasket failure.

Symptoms to notice

  • Engine temperature gauge climbing above the normal midpoint during driving or in traffic, especially under load
  • Overheating warning light activating without obvious coolant leak underneath the vehicle
  • Coolant reservoir level dropping over time without any visible external leak
  • Steam or sweet smell from the engine bay after driving, particularly from the radiator area
  • Milky or frothy oil on the dipstick or under the oil filler cap in severe cases following head gasket failure

What to check

  1. Check coolant temperature gauge behaviour during a 15-minute drive including some load: the needle should stabilise in the middle of the normal range and hold there.
  2. Any tendency to climb toward hot, especially under load or in slow traffic, is a red flag.
  3. Check the coolant reservoir level cold, and look for any milky discolouration in the coolant (head gasket cross-contamination if water pump failure caused overheat).
  4. Inspect the water pump area (accessible via the timing belt/chain cover side) for any staining or dried coolant residue indicating weeping.
  5. Review service records for any coolant top-up history.

Where to look: Water pump mounted on the front of the engine block, driven by the timing chain on the S07B

Parts involved: Water pump.

Ask the seller

  • “Has the water pump ever been replaced, and has the engine ever overheated or required coolant top-ups?”
  • “Has the car ever had a head gasket repair or any cooling system work done?”

03Denso Fuel Pump Impeller Failure (Recall)

Check the Honda Japan recall completion sticker inside the engine bay or door jamb, or ask the seller for documentation.petrol2017–2019EngineRead the full fault: symptoms, where to look, what to ask the seller

04CVT Secondary Pulley Bearing Noise and Wear

During the test drive, note any droning, whirring, or humming sound that increases with vehicle speed (not engine RPM).petrol2017–2024Transmission
OccasionalTransmission $1,800–$4,500 to fix

Can't confirm for this car

Independent of belt judder, the JF3/JF4 N-Box CVT is documented as susceptible to secondary (driven) pulley bearing wear, manifesting as a droning or whirring noise that changes with vehicle speed but not engine RPM. The bearing wears when CVT fluid is not changed on schedule, as degraded fluid loses its lubrication properties. In more advanced cases the bearing can seize, causing the CVT to lock up. This is distinct from CVT belt judder — it is a mechanical bearing failure rather than a friction-modifier issue — and requires partial or full transmission disassembly to address.

Symptoms to notice

  • Droning, humming or whirring sound that increases proportionally with road speed regardless of engine load or RPM
  • Noise that changes in pitch or intensity when turning (load shift on the bearings alters noise character)
  • Vibration felt through the floor or centre console at highway speeds coinciding with the noise
  • CVT fluid with a dark colour or metallic sheen indicating bearing material contamination
  • In advanced cases, harsh transmission engagement or slipping followed by complete loss of drive

What to check

  1. During the test drive, note any droning, whirring, or humming sound that increases with vehicle speed (not engine RPM).
  2. Raise engine RPM in neutral — if the noise disappears or diminishes, it is speed-related (bearing) rather than engine-related.
  3. Note whether the noise changes when the car is loaded (passengers, hills) versus unloaded.
  4. Check CVT fluid condition and service records.
  5. At higher mileage (over 100,000 km), consider having a specialist workshop check for metallic particles in the CVT fluid using a drain-and-inspect procedure.

Where to look: CVT transmission unit, secondary/driven pulley assembly on the output shaft side of the transmission

Parts involved: CVT belt and pulleys.

Ask the seller

  • “Is there any droning or humming noise from the transmission that changes with speed, and has a transmission specialist ever inspected the CVT internals?”
  • “What is the complete CVT fluid service history, including mileage and fluid type used at each change?”

05CVT Belt Judder and Shudder Under Light Throttle

Drive the car at 30-50 km/h on a flat road with very light, steady throttle.petrol2017–2024TransmissionRead the full fault: symptoms, where to look, what to ask the seller

06CVT Belt Judder on Automatic

Test drive and feel for rhythmic vibration during light acceleration from rest.petrol2011–2017Transmission
CommonTransmission $600–$3,500 to fix

Can't confirm for this car

N-Box JF CVT develops shudder from belt and pulley wear on urban short-trip examples. Honda HMMF fluid specification is critical.

Symptoms to notice

  • Rhythmic shudder or buzz during light acceleration from rest
  • CVT fluid darker than the correct Honda HMMF specification colour

What to check

Test drive and feel for rhythmic vibration during light acceleration from rest. CVT fluid darker than the correct pink indicates degraded fluid.

Where to look: CVT gearbox in engine bay

Parts involved: CVT belt and pulleys.

Ask the seller

  • “Has the cvt belt judder on automatic been inspected or repaired?”

07S07A/S07B turbo oil consumption and turbo wear

Check oil level and consumption, watch for blue smoke on boost, listen for turbo noise, and confirm regular oil changes.petrol2012–2024Engine
OccasionalEngine $400–$2,500 to fix

Can't confirm for this car

The turbocharged N-Box's tiny S07A/S07B 660cc engine can consume oil and wear the turbo if oil changes are neglected, given the small high-stress unit. Oil discipline is critical on these kei turbos.

Symptoms to notice

  • Oil consumption between changes
  • Blue smoke from turbo seals
  • Turbo whine or lag
  • Low oil warning

What to check

Check oil level and consumption, watch for blue smoke on boost, listen for turbo noise, and confirm regular oil changes.

Where to look: S07 engine and turbocharger

Parts involved: Turbocharger.

Ask the seller

  • “How much oil does it use?”
  • “What oil interval has it had?”
  • “Any turbo noise or smoke?”

08S07B Turbo Cold-Start Timing Chain Rattle

Start the engine cold and listen immediately for a metallic rattling or slapping noise from the upper front of the engine near the cam cover.petrol2017–2024EngineRead the full fault: symptoms, where to look, what to ask the seller

09S07A Timing Chain Tensioner Wear at Cold Start

Start the engine fully cold (overnight soak preferred) and listen for metallic rattle from the timing cover on the front of the engine.petrol2011–2017EngineRead the full fault: symptoms, where to look, what to ask the seller

10S07B Turbo Boost Control Solenoid Failure

Inspect the vacuum lines running to the boost control solenoid for cracking or collapse.petrol2017 onwardEngine
OccasionalEngine $320–$750 to fix

Can't confirm for this car

The S07B turbocharger uses an electronically controlled boost control solenoid (also called the wastegate control valve) to regulate manifold pressure. The solenoid is exposed to high underbonnet temperatures and intake air contamination. When it fails or sticks it causes erratic boost delivery: the ECU either over-boosts triggering a fuel-cut safety limp mode, or under-boosts resulting in sluggish acceleration. Fault codes P0243 (turbocharger wastegate solenoid A) and P0244 are the primary flags. Vacuum hose degradation feeding the solenoid compound the fault on older units. This is particularly relevant on NZ grey imports that have been run hard in Japanese city traffic with frequent transient boost events.

Symptoms to notice

  • Sudden loss of power followed by recovery (limp-home mode boost cut)
  • Turbo lag that varies noticeably between drives
  • Check engine light with P0243 or P0244 boost control codes
  • Boost gauge or OBD-II PID showing erratic manifold pressure
  • Intermittent hesitation under hard acceleration

What to check

  1. Inspect the vacuum lines running to the boost control solenoid for cracking or collapse.
  2. Request a road test with full-throttle acceleration in second gear to confirm consistent boost delivery without power cut.
  3. If a workshop inspection is possible: Plug an OBD-II scanner before purchase and check for pending or stored P0243/P0244 codes even if the MIL is not currently illuminated.

Where to look: Turbocharger assembly area, right side of engine bay behind the intercooler piping

Parts involved: Turbocharger.

Ask the seller

  • “Has the check engine light ever appeared for boost or turbo-related codes?”
  • “Has the boost control solenoid or associated vacuum lines been inspected or replaced?”
  • “Does the car accelerate consistently every time, or does it occasionally feel flat?”
  • “Has any turbo-related work been performed since import?”

11S07B Cold-Start Oil Pressure Warning from Oil Drain-Back

Oil drains from the engine overnight causing a momentary oil pressure warning on first start of the day.2017 onwardEngine
OccasionalEngine

Can't confirm for this car

Oil drains from the engine overnight causing a momentary oil pressure warning on first start of the day.

Symptoms to notice

  • Oil drains from the engine overnight causing a momentary oil pressure warning on first start of the day.
  • Confirm with pre-purchase inspection by a qualified mechanic

What to check

Oil drains from the engine overnight causing a momentary oil pressure warning on first start of the day.

Where to look: See description

12CVT belt/pulley wear and shudder

Test drive feeling for shudder and hesitation and check CVT fluid service history.petrol2012–2024Transmission
OccasionalTransmission $300–$3,000 to fix

Can't confirm for this car

The N-Box's CVT can shudder and wear the belt and pulleys, especially with neglected fluid or heavy loading, giving hesitation and juddering. Regular CVT fluid changes are essential on these kei cars.

Symptoms to notice

  • Shudder at low speed
  • Hesitation from a stop
  • Droning under acceleration
  • Slipping feeling

What to check

Test drive feeling for shudder and hesitation and check CVT fluid service history.

Where to look: CVT transmission

Parts involved: CVT belt and pulleys.

Ask the seller

  • “Any shudder or hesitation?”
  • “Has the CVT fluid been changed regularly?”
  • “Any transmission warnings?”

13Throttle Body Carbon Fouling

Inspect throttle body bore for grey-black carbon deposits.petrol2011–2017Engine
CommonEngine $80–$300 to fix

Can't confirm for this car

S07A throttle body butterfly and bore accumulate carbon causing rough idle and hesitation.

Symptoms to notice

  • Rough idle and hesitation from rest at light throttle
  • Occasional stalling when releasing throttle in traffic

What to check

  1. Inspect throttle body bore for grey-black carbon deposits.
  2. Note rough idle and hesitation.

Where to look: Throttle body on intake manifold

Ask the seller

  • “Has the throttle body carbon fouling been inspected or repaired?”
Electrical8

01Electric Power Steering (EPS) Warning and Intermittent Assist Loss

With engine running, turn the steering wheel lock-to-lock several times and note any EPS warning light illumination on the instrument cluster.petrol2017–2024Electrical
OccasionalElectrical $800–$2,400 to fix

Can't confirm for this car

The JF3/JF4 N-Box uses an electric power steering column motor. Owner forums and workshop records document an intermittent EPS fault where the system throws a warning light and partially or fully withdraws steering assistance. The fault is typically triggered by EPS control unit overheating during slow-speed manoeuvring (e.g. repeated tight car park turns), a faulty torque sensor in the column, or connector corrosion on the EPS ECU. Assistance is restored when the ignition is cycled in many cases, but the underlying fault can worsen and leave the vehicle with unassisted steering — manageable at speed but very heavy at low speed.

Symptoms to notice

  • EPS warning light illuminating on the instrument cluster, typically during or after sustained low-speed manoeuvring
  • Steering becoming suddenly noticeably heavier for several seconds before returning to normal
  • Complete loss of power steering assistance requiring significantly higher steering effort, particularly at parking speeds
  • Warning light that clears when ignition is cycled off and on, but recurs under the same conditions
  • Stored fault codes in the EPS ECU relating to torque sensor signal or motor overcurrent

What to check

With engine running, turn the steering wheel lock-to-lock several times and note any EPS warning light illumination on the instrument cluster. Perform multiple slow tight-turn manoeuvres to load the EPS motor thermally. Inspect the steering column connector at the base of the column for corrosion or chafed wiring. Ask whether the seller has ever experienced the steering becoming notably heavier than usual. If a workshop inspection is possible: Check for any stored EPS fault codes using an OBD scanner with Honda-specific coverage (generic OBD-II may not access EPS ECU).

Where to look: Electric steering motor and ECU at the base of the steering column, below the instrument binnacle

Parts involved: Steering rack.

Ask the seller

  • “Has the EPS or power steering warning light ever come on, and has the steering ever felt unusually heavy or unresponsive?”
  • “Has the car had any steering-related repairs or a steering column replacement?”

02Electric Power Steering Column Motor Failure

Scan for EPS fault codes.2011–2017Electrical
OccasionalElectrical $500–$1,800 to fix

Can't confirm for this car

EPS column motor fails causing sudden or gradual loss of power assistance.

Symptoms to notice

  • Sudden loss of power steering with EPS warning light
  • Heavy steering requiring effort especially at low speeds

What to check

  1. Scan for EPS fault codes.
  2. Test steering — heavy or inconsistent feel warrants investigation.

Where to look: EPS column motor and control unit

Parts involved: Steering rack.

Ask the seller

  • “Has the electric power steering column motor been inspected or repaired?”

03Power Sliding Door Actuator Motor Failure

Operate the power sliding door via the interior switch, exterior handle, and key fob through at least five full open/close cycles.petrol2017–2023Electrical
CommonElectrical $600–$1,800 to fix

Can't confirm for this car

The JF3/JF4 N-Box is equipped with a power sliding rear door (single or dual depending on trim). The actuator motor and cable-drive mechanism that powers the door is documented as a failure point, particularly on vehicles with higher cycles or exposure to the wet-start conditions common in New Zealand winters. The plastic gear inside the actuator strips or the motor winds degrade, causing the door to stop mid-travel, reverse unexpectedly, or fail to open or close entirely. The door control ECU may also set fault codes and disable the power function, leaving the door operable manually only.

Symptoms to notice

  • Power sliding door stops mid-travel and auto-reverses for no apparent reason
  • Grinding or clicking noise from the door body during power operation
  • Door operates normally from one input (e.g. interior switch) but not others (fob, exterior handle)
  • Door completely inoperable via power function; must be opened and closed manually
  • Dashboard or infotainment display shows sliding door warning or fault indicator

What to check

Operate the power sliding door via the interior switch, exterior handle, and key fob through at least five full open/close cycles. Listen for grinding, squealing or hesitation mid-travel. Attempt to open and close from all three inputs independently. Check if the door auto-reverses on light contact with the door seal (obstacle detection test). Inspect the door sill and lower rail for damage or debris that could cause false obstructions. If a workshop inspection is possible: Check for any SRS or body electrical fault codes using an OBD scanner.

Where to look: Rear sliding door, left or right side; actuator motor and cable drive unit mounted in the door body and B-pillar channel

Ask the seller

  • “Has the power sliding door ever needed any repairs, and does it currently work properly from every control input including the key fob?”
  • “Has the vehicle had any Honda dealer service campaigns or recalls performed, particularly relating to the sliding door system?”

04Sliding Door Motor Connector Moisture Ingress

Operate the sliding door using the key fob, the interior button, and the exterior handle button through at least five full open-close cycles.2011 onwardElectrical
OccasionalElectrical $160–$950 to fix

Can't confirm for this car

The power sliding door motor and its associated wiring harness connector on N-Box models are routed through the B-pillar and lower door sill area, where the harness is protected by a rubber grommet and door seal. Over time, the grommet and door weatherstrip lose elasticity, allowing water to track along the harness and enter the multi-pin motor connector. Moisture causes oxidation of the connector terminals and the motor control module pins, producing intermittent or complete loss of powered door function. Symptoms range from a door fault warning illuminating on the instrument cluster, the door refusing to open or close electrically, the door stopping mid-travel, to the door becoming inoperative via the key fob and interior button while still movable manually. Cold and wet conditions accelerate symptom onset. Temporary restoration by wiggling the connector or drying with compressed air is a diagnostic indicator. In advanced cases the motor windings corrode and require motor replacement.

Symptoms to notice

  • Sliding door fault warning light on instrument cluster
  • Power sliding door fails to open or close via button or remote
  • Door halts mid-travel and reverses
  • Intermittent door operation — works sometimes, fails in wet weather
  • Door operates manually but not electrically
  • Beeping or error tone when door operation is attempted

What to check

  1. Operate the sliding door using the key fob, the interior button, and the exterior handle button through at least five full open-close cycles.
  2. Test in different temperatures if possible.
  3. Inspect the B-pillar wiring harness grommet for cracking or dislodgement.
  4. Trace the harness to the motor connector and check for moisture, green oxidation, or pin corrosion.
  5. Check for any stored door fault codes via OBD2 scan.

Where to look: Rear sliding door motor, B-pillar wiring grommet, and door harness multi-pin connector

Ask the seller

  • “Does the power sliding door operate reliably in all weather conditions?”
  • “Has a sliding door fault light ever appeared on the dashboard?”
  • “Has any work been done on the sliding door motor or wiring?”
  • “Does the door ever stop mid-travel or fail to respond to the remote?”

05Power sliding door and suspension bush wear

Cycle the power sliding door for full operation, and inspect front suspension bushes for wear with a bounce test.2012–2024Electrical
OccasionalElectrical $250–$1,200 to fix

Can't confirm for this car

The N-Box's power sliding door can fail at the motor or cable, and front suspension bushes wear giving clunks. Both are common on this popular kei car, especially higher-km imports.

Symptoms to notice

  • Power sliding door won't operate
  • Door jams part-way
  • Clunk over bumps
  • Vague steering

What to check

Cycle the power sliding door for full operation, and inspect front suspension bushes for wear with a bounce test.

Where to look: Power sliding door and front suspension bushes

Ask the seller

  • “Does the power door work reliably?”
  • “Any clunks over bumps?”
  • “Any suspension work done?”

06Power Sliding Door Conductor Reel Failure

petrol2017 onwardElectrical
OccasionalElectrical $420–$980 to fix

Can't confirm for this car

The N-Box Custom's power sliding door system routes electrical power and signal wiring through a conductor reel assembly (also called a cable reel or door harness spool) that accommodates the door's travel along its track. The reel undergoes thousands of full open-close cycles in high-use family vehicles. Internal conductor fatigue causes intermittent electrical continuity loss, triggering the door warning light, door error codes on the multi-information display, and in some cases locking the door in a partially open or closed position as the system detects a fault and disables powered operation. The failure is typically progressive — starting with intermittent door warning lights — before becoming a consistent fault. The conductor reel is a Honda-specific assembly and must be replaced rather than repaired.

Symptoms to notice

  • Power sliding door warning light or door fault indicator on dashboard
  • Power sliding door stopping mid-travel and reversing without obstruction
  • Door operating intermittently — working some trips but not others
  • Door defaulting to manual-only operation after fault detection
  • Error message on multi-information display referencing sliding door system

What to check

Cycle the power sliding door fully open and closed at least 5 times and observe for any hesitation, stop-and-reverse without obstruction, or warning light activation. Inspect the wiring harness visible at the rear door aperture for any chafing, pinching in the door track, or visible damage to the rubber conduit where the harness enters the door. If a workshop inspection is possible: Run a door system diagnostic with a Honda-compatible OBD-II scanner to check for stored door system DTCs.

Where to look: Rear sliding door conductor reel assembly inside door panel, harness routing through B-pillar to door aperture

Ask the seller

  • “Does the power sliding door open and close reliably every time?”
  • “Has the sliding door warning light ever appeared on the dashboard?”
  • “Has any work been done on the power sliding door system?”
  • “Can I cycle the door 5 or 6 times during the inspection to check for faults?”

07Battery Drain from Push-Button Start Module Parasitic Draw

The smart key push-button start module has a parasitic draw that can flatten the 12V battery if the vehicle sits unused for extended periods.Electrical
OccasionalElectrical

Can't confirm for this car

The smart key push-button start module has a parasitic draw that can flatten the 12V battery if the vehicle sits unused for extended periods.

Symptoms to notice

  • The smart key push-button start module has a parasitic draw that can flatten the 12V battery if the vehicle sits unused
  • Confirm with pre-purchase inspection by a qualified mechanic

What to check

The smart key push-button start module has a parasitic draw that can flatten the 12V battery if the vehicle sits unused for extended periods.

Where to look: See description

Parts involved: 12V battery.

08Electric Power Steering Rack Rattle

EPS rack develops internal rattle at low speeds and on bumpy surfaces.Electrical
CommonElectrical

Can't confirm for this car

EPS rack develops internal rattle at low speeds and on bumpy surfaces.

Symptoms to notice

  • EPS rack develops internal rattle at low speeds and on bumpy surfaces.
  • Confirm with pre-purchase inspection by a qualified mechanic

What to check

EPS rack develops internal rattle at low speeds and on bumpy surfaces.

Where to look: See description

Parts involved: Steering rack.

Body, brakes, suspension & interior4

01Front Strut Top Mount Bearing Failure & Clicking

Drive slowly over a speed hump or rough surface and listen for clicking from either front strut tower.2011–2017SuspensionRead the full fault: symptoms, where to look, what to ask the seller

02Front Lower Arm Ball Joint Wear

Inspect the boot for splitting.2011–2017Suspension
CommonSuspension $250–$600 to fix

Can't confirm for this car

Front lower arm ball joints wear causing clunking and handling imprecision.

The front wheel of a car splayed outward with the lower control arm hanging down after a ball joint separation.Example of the part — not this vehicle

A separated lower ball joint: the control arm has dropped and the wheel has splayed out under the guard.

Elfix · CC0 · Wikimedia Commons

Symptoms to notice

  • Clunking from front suspension over bumps
  • Imprecise steering feel when cornering

What to check

Inspect the boot for splitting. If a workshop inspection is possible: With vehicle raised, lever the lower arm and check for ball joint play.

Where to look: Front lower suspension control arms

Parts involved: Ball joint.

Ask the seller

  • “Has the front lower arm ball joint been inspected or repaired?”

03Brake Caliper Guide Pin Seizure

Check for pulling under braking.2011–2017Brakes
CommonBrakes $150–$500 to fix

Can't confirm for this car

Front brake caliper guide pins seize from corrosion causing uneven pad wear.

Symptoms to notice

  • Vehicle pulling to one side under braking
  • One front disc hotter than the other after moderate use

What to check

  1. Check for pulling under braking.
  2. Feel for uneven wheel heat.
  3. Inspect guide pins.

Where to look: Front brake calipers

Parts involved: Brake disc and pads.

Ask the seller

  • “Has the brake caliper guide pin seizure been inspected or repaired?”

04Front Strut Mount Bearing Click Over Sharp Bumps

Drive slowly over a sharp-edged speed hump or pothole and listen for a single click from either front corner.petrol2017 onwardSuspension
CommonSuspension $280–$700 to fix

Can't confirm for this car

The JF3/JF4 N-Box Custom uses MacPherson strut front suspension with a pressed-steel top mount housing a needle roller or thrust bearing that allows the strut to rotate during steering. When this bearing corrodes, loses lubrication, or physically degrades — accelerated by the short suspension travel of a tall kei car body on rough urban roads — it produces a distinctive single click or clunk when one wheel passes over a sharp bump or pothole edge. The noise is localised to the affected corner and may also manifest as a creaking sound during full steering lock parking manoeuvres. NZ road conditions, including rough chip-seal and speed humps, accelerate bearing wear relative to the smooth Japanese urban surfaces these vehicles were designed for. Left unaddressed the bearing can seize, preventing strut rotation and causing tyre scrub during steering.

Symptoms to notice

  • Single click or clunk from front corner when hitting sharp bumps or road edges
  • Creaking noise at full steering lock during low-speed parking
  • Click more pronounced in cold conditions and diminishes once warmed up
  • Noise clearly localised to one front corner
  • Occasional knocking when traversing speed bumps or rough road transitions

What to check

  1. Drive slowly over a sharp-edged speed hump or pothole and listen for a single click from either front corner.
  2. With the vehicle stationary and engine off, have an assistant turn the steering wheel lock-to-lock while you listen at each front strut tower for creaking or grinding.
  3. Inspect the strut top mount area for rust weeping or corrosion which indicates moisture has entered the bearing housing.
  4. Push down firmly on each front corner and release to feel for roughness in the rebound.

Where to look: Front strut top mount bearing, visible at each front strut tower in the engine bay

Parts involved: Shock absorber / strut.

Ask the seller

  • “Does the car make any clicking or clunking noise when going over speed bumps?”
  • “Has any front suspension work been done including strut mounts or top bearings?”
  • “Is there any creaking when steering at very slow speed during parking?”
  • “Have the strut mounts been inspected since the vehicle was imported to NZ?”
Fluid leaks2

01S07A Turbo Oil Seal Leak Causing Blue Smoke on Overrun

The turbocharger oil return seal fails on the S07A, allowing oil to enter the exhaust causing blue smoke on engine braking.2011–2018Fluid Leaks
CommonFluid Leaks

Can't confirm for this car

The turbocharger oil return seal fails on the S07A, allowing oil to enter the exhaust causing blue smoke on engine braking.

Symptoms to notice

  • The turbocharger oil return seal fails on the S07A, allowing oil to enter the exhaust causing blue smoke on engine braki
  • Confirm with pre-purchase inspection by a qualified mechanic

What to check

The turbocharger oil return seal fails on the S07A, allowing oil to enter the exhaust causing blue smoke on engine braking.

Where to look: See description

Parts involved: Turbocharger.

02S07B Valve Cover Gasket Oil Seep

petrol2017–2024Fluid Leaks
Very commonFluid Leaks $250–$600 to fix

Can't confirm for this car

The S07B engine's valve cover uses a rubber gasket that is documented as prone to hardening and oil seepage, particularly on turbocharged variants where heat cycling is more severe. Oil seeps from the gasket perimeter and accumulates on the cam cover surface and around the spark plug tube seals. On the turbo model, oil can track down onto the turbocharger heat shield and exhaust manifold, creating a burning oil smell in the cabin and engine bay. While not immediately critical, unaddressed seepage can contaminate the ignition coils seated inside the cam cover spark plug tubes, causing misfire.

Symptoms to notice

  • Oily brown residue or grime accumulation on the outer edges of the cam cover, particularly at corners and bolt bosses
  • Burning oil smell from the engine bay, especially noticeable after spirited driving or when stationary after a run
  • Oil pooling in the spark plug tube wells visible when ignition coils are removed
  • Engine misfire (P0301-P0303) caused by oil contamination of ignition coil boots in the plug tubes
  • Gradual unexplained oil consumption without visible ground drips

What to check

With the engine warm, open the bonnet and inspect the top of the engine around the perimeter of the black plastic valve/cam cover for any brown oily residue or grime accumulation. Check the four spark plug tube recesses inside the cam cover for oil pooling around the ignition coils. Inspect the area directly below the cam cover where it meets the block. A burning oil smell during or after driving with no visible external leak points to oil dripping onto the turbocharger or exhaust.

Where to look: Top of engine, valve/cam cover perimeter and spark plug tube seals; oil can track down to turbocharger and exhaust on S07B turbo variants

Parts involved: Rocker / valve cover.

Ask the seller

  • “Has the valve cover gasket ever been replaced, or has any mechanic mentioned an oil leak or burning smell from the engine?”
  • “When were the ignition coils or spark plugs last inspected, and was there any sign of oil contamination in the plug wells?”

Honda N-Box faults in detail

Each of these has its own page: the symptoms, where to look, what to ask the seller and what the repair costs. Free, no account needed.

CVT Belt Judder and Shudder Under Light ThrottleMajor · TransmissionDenso Fuel Pump Impeller Failure (Recall)Critical · EngineFront Strut Top Mount Bearing Failure & ClickingMajor · SuspensionS07A Timing Chain Tensioner Wear at Cold StartMajor · EngineS07B Turbo Cold-Start Timing Chain RattleMajor · Engine

What these repairs cost on other cars

Some of the Honda N-Box’s documented faults are repairs other models share. Each page lists the documented NZ cost for every model it affects.

Other Honda models

Honda CR-V59 documented faultsHonda Accord55 documented faultsHonda Jazz51 documented faultsHonda Shuttle25 documented faultsHonda Freed23 documented faultsHonda Stream22 documented faults

Honda N-Box buyer questions

Is the Honda N-Box reliable?

Like any used car, it depends on the specific example and its service history. Across the 27 documented faults for the Honda N-Box, the recurring problem areas are engine, cooling, and transmission. A Honda N-Box with a full service history and no signs of the issues listed on this page can be a sound buy but each one needs to be checked individually before you commit.

What are the most common problems with a used Honda N-Box?

We've catalogued 27 known faults for the Honda N-Box, covering engine, cooling, and transmission. All 27 are written out in full on this page, with the symptoms to notice, what to inspect, and typical repair costs for each. Free to read, no account needed.

How much do repairs cost on a Honda N-Box?

Most single repairs on the Honda N-Box fall between $400–$1,400 at NZ independent-workshop rates. Some of the 27 documented faults cost less and a few cost considerably more, and no one car needs them all. Knowing which ones to look for before you view is what lets you negotiate the price down or walk away.

Should I get a pre-purchase inspection on a Honda N-Box?

Yes. A Honda N-Box inspection focused on its known weak points is the single best way to avoid an expensive mistake. KickTyres gives you a guided, model-specific inspection plus a market valuation and negotiation figure for $24.90 far less than the cost of missing one of the faults on this page.