Land Rover Defender L663: common faults & what to check
The L663 is the Land Rover Defender built 2020 onward. It was sold here with the 2.0 turbo petrol, 3.0 mild-hybrid diesel, and 5.0 V8 petrol. Of the 20 faults documented for the Defender, 11 apply to this generation, each with its symptoms, what to inspect and a typical repair cost. Free, no account needed.
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20
Critical
$800–$3,500
8
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A 2020 Land Rover Defender is the L663 generation (2020 to now).
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Pick the engine above first: the Defender came with 3, and without it the report has to show all of their faults. Pick the engine
Can't confirm for this car
Land Rover Defender · 2020
Narrowed to the year. No engine is recorded for this vehicle. Pick an engine to see which faults apply.
Tell us the engine, or check the engine code on the car, before relying on this.
- No engine is recorded for this vehicle.
matched on year only
What to look out for
Costly issue
Spray soapy water around the upper and lower bellow seats while the suspension is pressurised and watch for bubbles.
Air Suspension Front Air Spring Seal Failure & Height Fault
The L663 Defender's optional and standard-fit Electronic Air Suspension (EAS) uses rubber-bellow air springs at all four corners. The front air springs are prone to seal degradation at the piston-bellow interface, allowing slow air loss. The vehicle detects the height error via ride-height sensors and raises a suspension fault, defaulting to a fixed mid-height or lowering to bump stops if the leak is severe. Seal failure is accelerated by exposure to road grime, tyre-thrown debris, and UV degradation of the rubber bellow material in NZ/AU conditions. Some vehicles have required air spring replacement within 40,000-60,000 km. The air compressor can also be damaged if it runs continuously to compensate for a slow leak, leading to compressor motor burnout as a secondary failure.
What you would notice
Costly issue
Raise and lower the ride height using the terrain mode controls during the test drive and verify smooth, prompt response at all height settings.
L663 Air Suspension Compressor Failure
The L663 Defender offers optional air suspension (standard on higher trims). The air compressor and valve block assembly are early-wear items. Multiple L663 owners on UK and Australasian forums report compressor failures occurring as early as 30,000-60,000 km, particularly on vehicles used off-road with frequent ride-height changes or operated in dusty conditions. The compressor draws in ambient air through a filter; dust ingestion accelerates wear. Failure results in the vehicle being unable to raise or lower ride height and in some cases the suspension settling to minimum height. Replacement compressor and valve block assemblies are expensive dealer parts.
What you would notice
Costly issue
Leave the car parked, then return and see if a corner has sagged.
Air suspension leaks and levelling faults (L663)
Most L663 Defenders ride on electronic air suspension. Over time air springs develop seeps in the rubber bellows and the compressor is worked hard keeping height, which can trigger a 'suspension' warning and a car that sits low or refuses to raise. It is early days for this generation but the components are shared design with other JLR air systems that are known to wear.
What you would notice
Common issue
Sit in the car cold and start it: the screen and cameras should come up promptly.
Pivi Pro infotainment and software glitches (L663)
The new-shape L663 Defender is far more civilised than the old one but leans heavily on software. Owners report the Pivi Pro touchscreen freezing or rebooting, blank screens on start-up, phantom warning messages and modules needing software updates. Most are fixed with a dealer update or 12V reset, but a car that is behind on updates can behave erratically.
What you would notice
Worth checking
Ask how often the car is driven and whether it has ever gone flat sitting.
12V battery drain and electrical gremlins (L663)
The L663 has a lot of always-on electronics and mild-hybrid systems, and owners report flat 12V batteries after short periods of standing, random modules dropping offline and door-latch or seal-related electrical faults (several JLR recalls touched the early build). A weak or aged 12V battery can cause a cascade of confusing warnings.
What you would notice
See all 11 issues for this one
Electrical
01Pivi Pro infotainment and software glitches (L663)
The new-shape L663 Defender is far more civilised than the old one but leans heavily on software. Owners report the Pivi Pro touchscreen freezing or rebooting, blank screens on start-up, phantom warning messages and modules needing software updates. Most are fixed with a dealer update or 12V reset, but a car that is behind on updates can behave erratically.
Symptoms to notice
What to check
Ask the seller
0212V battery drain and electrical gremlins (L663)
The L663 has a lot of always-on electronics and mild-hybrid systems, and owners report flat 12V batteries after short periods of standing, random modules dropping offline and door-latch or seal-related electrical faults (several JLR recalls touched the early build). A weak or aged 12V battery can cause a cascade of confusing warnings.
Symptoms to notice
What to check
Ask the seller
Body, brakes, suspension & interior
03Air Suspension Front Air Spring Seal Failure & Height Fault
04L663 Air Suspension Compressor Failure
The L663 Defender offers optional air suspension (standard on higher trims). The air compressor and valve block assembly are early-wear items. Multiple L663 owners on UK and Australasian forums report compressor failures occurring as early as 30,000-60,000 km, particularly on vehicles used off-road with frequent ride-height changes or operated in dusty conditions. The compressor draws in ambient air through a filter; dust ingestion accelerates wear. Failure results in the vehicle being unable to raise or lower ride height and in some cases the suspension settling to minimum height. Replacement compressor and valve block assemblies are expensive dealer parts.
Symptoms to notice
What to check
Ask the seller
05Air suspension leaks and levelling faults (L663)
Most L663 Defenders ride on electronic air suspension. Over time air springs develop seeps in the rubber bellows and the compressor is worked hard keeping height, which can trigger a 'suspension' warning and a car that sits low or refuses to raise. It is early days for this generation but the components are shared design with other JLR air systems that are known to wear.
Symptoms to notice
What to check
Ask the seller
Depends on the exact engine — 6 more
Engine, transmission & cooling
01D300/D350 ZF8HP Torque Converter Lock-up Judder
Can't confirm for this car
Can't confirm for this car
The D300 and D350 3.0L inline-six diesel Defenders use the ZF 8HP70/8HP75 automatic gearbox. Under steady highway cruise conditions, typically between 80-110 km/h in 7th or 8th gear, the torque converter lock-up clutch can develop a shudder or judder felt through the driveline and seat. The fault is caused by glazing or wear of the torque converter lock-up clutch friction material, exacerbated by the high torque output of the 3.0L diesel. ZF and JLR have acknowledged this with a transmission fluid specification update and in some cases a TCU software recalibration of lock-up engagement pressure. Vehicles that have not had the ATF changed at specified intervals or that have towed heavy loads are at higher risk. Severe cases require torque converter replacement.
Example of the part — not this vehicleA torque converter, sectioned. The lock-up clutch inside is what shudders.
Symptoms to notice
What to check
Ask the seller
022.0D Ingenium DPF Clogging - Urban Short Trips
Can't confirm for this car03Ingenium Diesel EGR Cooler Gasket Failure & Coolant Loss
Can't confirm for this car
Can't confirm for this car
The Ingenium diesel engines fitted to the L663 (D200, D250, D300, D350) use a high-efficiency EGR cooler to reduce NOx emissions. The cooler's end-tank gaskets are subject to thermal cycling stress and have a documented failure mode where the gasket weeps or fails, allowing engine coolant to enter the EGR gas path or leak externally. Coolant loss can be slow and insidious, causing the engine to overheat without obvious external puddles. In advanced cases, coolant passes through the EGR system into the intake manifold and combustion chambers, causing white exhaust smoke and potential hydrolock damage if a large volume enters. The repair requires EGR system disassembly and often intake manifold removal, making it a high-labour job at JLR dealer rates.
Symptoms to notice
What to check
Ask the seller
04P300 2.0 Ingenium petrol thermostat housing coolant leak and low coolant warning
Can't confirm for this car05P400 3.0 Ingenium petrol MHEV turbo coolant pipe O-ring leak
Can't confirm for this car
Can't confirm for this car
The P400 3.0 Ingenium six-cylinder mild hybrid petrol uses water-cooled turbochargers fed by small coolant pipes sealed with O-rings. JLR's SSM75747 records O-ring failures on these feed and return pipes on 2020 model year onward Defenders, and tells technicians to replace both pipes even if only one leaks, and to check the Defender heater hose is routed correctly. The O-rings harden and flatten, so coolant is lost slowly onto hot turbo parts, giving low coolant warnings and, if ignored, overheating. No recall applies.
Symptoms to notice
What to check
Ask the seller
Electrical
01D300 3.0 48V Belt-Starter-Generator (BSA) Failure
Can't confirm for this car
Can't confirm for this car
The L663 Defender D300 diesel uses a 48-volt mild-hybrid system with a belt-starter-alternator (BSA) integrated into the engine accessory drive. Early production L663 Defenders (2020-2022 build dates) experienced premature BSA unit failures documented extensively on UK Land Rover forums, the Land Rover Owner International forums, and US Defender forums. Failure results in loss of the mild-hybrid assist function, inability to use stop-start, and in some cases the vehicle entering a charging fault state. BSA units are expensive Land Rover dealer-only parts. Several NZ and AU owners have confirmed the fault through dealer warranty claims.
Symptoms to notice
What to check
Ask the seller
Other Land Rover Defender engines and years
Engine, transmission & cooling
01P400 3.0 Ingenium petrol engine-bay oil and fuel leak fire recalls (N763, N853, N908)
Does not apply
Does not apply
Three safety recalls cover the P400 3.0 Ingenium (AJ20-P6) six-cylinder petrol in 2023 and 2024 model year Defenders. N763 (AU REC-005615) is for cam carriers whose oil gallery was not fully drilled, which can cause an external oil leak or oil carried into the intake. N853 (AU REC-005916) is for cracked fuel injector retaining clamps that can leak fuel. N908 (NHTSA 24V-450) is for oil filter housings that can crack and spray oil onto hot parts. All three carry an engine-bay fire risk and are fixed free by a Land Rover dealer, so an unfixed car is a safety issue and paying privately for the parts is expensive.
Symptoms to notice
What to check
Ask the seller
02300Tdi Head Gasket Failure and Oil/Coolant Cross-Contamination
Does not apply03Td5 oil-in-loom leak and oil pump drive bolt loosening
Does not apply
Does not apply
On the Td5 five-cylinder diesel, engine oil famously wicks along the injector wiring harness and can drip into the ECU or under the cam cover, causing misfires and messy leaks. More seriously, early Td5 engines can suffer the oil pump drive sprocket bolt working loose over high mileage, which drops oil pressure and can wreck the bottom end. A proactive owner will have fitted the uprated bolt.
Symptoms to notice
What to check
Ask the seller
0423MY-on engine cooling fan intermittent failure and overheat risk (P300 2.0 petrol, 2.0 and 3.0 diesel)
Does not apply
Does not apply
From the 2023 model year (cars built from mid 2022), the electric engine cooling fan on the P300 2.0 Ingenium petrol and the 2.0 and 3.0 Ingenium diesels can intermittently refuse to run, storing code P0480-13 and risking engine overheating. JLR's SSM76075 and SSM76058 confirm that fitting another fan of the original level does not fix it; a revised fan (part LR164713 marked #ST3) was later released as the permanent cure. The interim workaround JLR gave owners was to switch the ignition on within 15 seconds of opening the driver's door. There is no recall; the revised fan is warranty work on in-warranty cars.
Symptoms to notice
What to check
Ask the seller
Body, brakes, suspension & interior
01Chassis and bulkhead rust (Td5/Puma classic Defender)
Does not apply02Defender 130 third-row seat backrest latch and seatbelt anchorage recalls (N768, D098)
Does not apply
Does not apply
The eight-seat Defender 130 has had two third-row safety recalls. N768 (AU REC-005633, NHTSA 23V-137) covers third-row backrest locking mechanisms that may not latch properly, so the backrest can collapse onto passengers in a crash or hard stop. D098 (AU REC-006575, NHTSA 26V-163) covers 2025 to 2026 Defender 130s whose third-row lower seatbelt anchorage bracket may have a weak weld stud. Both are free dealer fixes; an unfixed car carries a real injury risk for rear passengers. Defender 90 and 110 models are not affected.
Symptoms to notice
What to check
Ask the seller
03Front Swivel Housing Oil Seal Failure and Bearing Wear
Does not applyFluid leaks
01Td5 Injector Wiring Loom Chafing and Fuel Leak Fire Risk
Does not apply02Chronic oil leaks from swivel hubs, transfer box and seals
Does not apply
Does not apply
A classic Defender that never marks the driveway is the exception, not the rule. Oil weeps from the swivel hubs (the shiny chrome balls at the front wheels), the transfer box, gearbox and engine rear main seal are common, and the front swivel seals also let grease/oil escape onto the brakes. Small seeps are a maintenance item; a swivel that has run dry can wear and get expensive.
Symptoms to notice
What to check
Ask the seller
Land Rover Defender faults in detail
What these repairs cost on other cars
Some of the Land Rover Defender’s documented faults are repairs other models share. Each page lists the documented NZ cost for every model it affects.
Other Land Rover models
Land Rover Defender buyer questions
Is the Land Rover Defender reliable?
Like any used car, it depends on the specific example and its service history. Across the 20 documented faults for the Land Rover Defender, the recurring problem areas are body & rust, engine, and interior. A Land Rover Defender 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 Land Rover Defender?
We've catalogued 20 known faults for the Land Rover Defender, covering body & rust, engine, and interior. All 20 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 Land Rover Defender?
Most single repairs on the Land Rover Defender fall between $800–$3,500 at NZ independent-workshop rates. Some of the 20 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 Land Rover Defender?
Yes. A Land Rover Defender 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.