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Mercedes-Benz1999–2015 Critical issues documented

Mercedes-Benz Vito W639: common faults & what to check

The W639 is the Mercedes-Benz Vito built 2003–2015. It was sold here with the 2.1 diesel and 3.0 V6 diesel. Of the 16 faults documented for the Vito, 12 apply to this generation, each with its symptoms, what to inspect and a typical repair cost. Free, no account needed.

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  • Odometer history
  • Money owing
  • Reported stolen
  • Ownership history
  • Official NZ vehicle register data
  • NZ owned and operated

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16

Documented faults

Critical

Most serious

$600–$3,500

Typical repair

6

Systems covered

You're looking at the W639

2 engine variants are documented for this generation. Pick yours to narrow further, or keep reading for the generation as a whole.

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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.

A 2005 Mercedes-Benz Vito is the W639 generation (2003 to 2015).

Start your free check on this Mercedes-Benz Vito

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Mercedes-Benz Vito W639Engine not picked yet

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Can't confirm for this car

Mercedes-Benz Vito · 2005

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

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

  • Costly issue

    Open and close the sliding door several times and note any stiffness, grinding, or failure to latch.

    See why

    W639 Sliding Door Roller, Guide Rail, and Cable Failure

    The W639 Vito sliding door mechanism suffers from progressive wear of the lower, centre, and upper rollers along with the guide rail components. On electric-door variants, the cable connecting the motor to the door latch mechanism is made from relatively weak materials and stretches or snaps over time. Manual-door variants suffer from seized or corroded rollers and cracked plastic guide hinges. In both cases the door becomes heavy to operate, fails to latch properly, drops on its runners, or stops mid-travel. Replacement kits with improved materials are widely available from aftermarket suppliers.

    What you would notice

    • Sliding door stiff, heavy, or requiring excessive force to open or close
    • Door fails to latch securely or pops open while driving
    • Grinding or scraping noise during door travel
    • Electric sliding door stops mid-travel or reverses unexpectedly

    Typically $400–$1,500 to put right.

  • Costly issue

    Walk the arches, sills and lower doors looking for bubbling.

    See why

    Bodywork rust, especially white commercial vans (W639)

    The W639 Vito rusts where commercial vans do - wheel arches, sills, door bottoms, tailgate/rear doors and around the sliding-door tracks. Owners note white vans (the bulk of the commercial fleet) fared worse because non-metallic paint got thinner factory protection. Facelift 2010-2012 cars are a little better. Surface rust is cosmetic; rot at structural points fails a WoF.

    What you would notice

    • Bubbling paint on arches, sills and door bottoms
    • Rust around the sliding-door track and rear doors
    • Corrosion on the tailgate/barn doors
    • Rust flaking on the underbody

    Typically $600–$4,000 to put right.

  • Common issue

    Any audible or visible play at the ball-joint ends confirms wear.

    See why

    Front anti-roll bar end-link failure under commercial loads

    Vito models used in commercial delivery and tradesman applications accelerate wear in the front anti-roll bar drop links. The ball-joint ends wear and develop play, causing a metallic knock over bumps. This is accepted as normal wear in commercial use but is frequently missed at WoF due to inspector access difficulty. Failed links allow excessive body roll and increase tyre and suspension wear.

    What you would notice

    • Metallic knocking or clonking from the front suspension over speed bumps and uneven road surfaces
    • Knock present even at low speeds when weight shifts
    • Noise changes when body weight is applied to one corner of the vehicle

    Typically $150–$380 to put right.

See all 12 issues for this oneDocumented for the exact year and engine you picked, including 1 rated critical.
Body, brakes, suspension & interior3

01Bodywork rust, especially white commercial vans (W639)

Walk the arches, sills and lower doors looking for bubbling.2004–2014Body & Rust
CommonBody & Rust $600–$4,000 to fix

The W639 Vito rusts where commercial vans do - wheel arches, sills, door bottoms, tailgate/rear doors and around the sliding-door tracks. Owners note white vans (the bulk of the commercial fleet) fared worse because non-metallic paint got thinner factory protection. Facelift 2010-2012 cars are a little better. Surface rust is cosmetic; rot at structural points fails a WoF.

Symptoms to notice

  • Bubbling paint on arches, sills and door bottoms
  • Rust around the sliding-door track and rear doors
  • Corrosion on the tailgate/barn doors
  • Rust flaking on the underbody

What to check

Walk the arches, sills and lower doors looking for bubbling. Check the sliding-door track area and rear door bottoms. Look underneath for structural corrosion. On a white ex-fleet van, budget for some rust remediation.

Where to look: Wheel arches, sills, door bottoms, sliding-door track, rear doors, underbody

Parts involved: Body corrosion.

Ask the seller

  • “Any rust repairs done, and where?”
  • “Will it pass a WoF - any structural rust?”

02W639 Sliding Door Roller, Guide Rail, and Cable Failure

Open and close the sliding door several times and note any stiffness, grinding, or failure to latch.2003–2014Body & RustRead the full fault: symptoms, where to look, what to ask the seller

03Front anti-roll bar end-link failure under commercial loads

Any audible or visible play at the ball-joint ends confirms wear.2003 onwardSuspension
Very commonSuspension $150–$380 to fix

Vito models used in commercial delivery and tradesman applications accelerate wear in the front anti-roll bar drop links. The ball-joint ends wear and develop play, causing a metallic knock over bumps. This is accepted as normal wear in commercial use but is frequently missed at WoF due to inspector access difficulty. Failed links allow excessive body roll and increase tyre and suspension wear.

Symptoms to notice

  • Metallic knocking or clonking from the front suspension over speed bumps and uneven road surfaces
  • Knock present even at low speeds when weight shifts
  • Noise changes when body weight is applied to one corner of the vehicle

What to check

Any audible or visible play at the ball-joint ends confirms wear. Check both sides as failure is often bilateral on commercial vans. If a workshop inspection is possible: With the vehicle on a hoist, grab each anti-roll bar end link and shake it.

Where to look: Front suspension, connecting the anti-roll bar to the front strut/lower arm on each side

Parts involved: Ball joint.

Ask the seller

  • “Has the van been used for heavy commercial delivery work?”
  • “Any knocking from the front suspension noticed?”
Depends on the exact engine — 9 moreDocumented for a specific engine we could not confirm from what you picked. Check the engine code on the car.
Engine, transmission & cooling7

01OM646 Injector Copper Seal Failure — Carbon Seizure

Any black, hard, carbonised crust around an injector confirms copper seal failure and ongoing combustion gas escape.diesel2003–2014EngineRead the full fault: symptoms, where to look, what to ask the seller

02Injector 'black death' and CDI diesel faults (W639)

At idle, open the bonnet and listen for a chuffing/ticking at the top of the engine that changes with revs.diesel2004–2014EngineRead the full fault: symptoms, where to look, what to ask the seller

03OM646 Timing Chain Tensioner Premature Wear

Start the engine from fully cold and listen carefully for chain rattle or slapping from the front of the engine.diesel2003–2010EngineRead the full fault: symptoms, where to look, what to ask the seller

04W639 OM646 EGR Cooler Internal Coolant Leak into Intake

Check coolant level and ask about any top-up frequency.diesel2003–2014CoolingRead the full fault: symptoms, where to look, what to ask the seller

05OM646 EGR valve blockage and oil cooler coolant leak

Check coolant reservoir for oil contamination (brown slick on surface).diesel2003–2014EngineRead the full fault: symptoms, where to look, what to ask the seller

06W7B450 gearbox solenoid wear causing harsh downshifts

diesel2003–2014TransmissionRead the full fault: symptoms, where to look, what to ask the seller

07722.6 5-speed auto conductor plate failure and limp mode (W639)

Drive through all gears and confirm smooth up and down changes and a working kick-down.2004–2014TransmissionRead the full fault: symptoms, where to look, what to ask the seller
Fluid leaks2

01W639 OM646 2.2 CDI Injector Return Pipe and Seal External Fuel Leak

With the engine warm, open the bonnet and inspect the top of the engine carefully around all four injectors and the fuel return pipe connections.diesel2003–2014Fluid LeaksRead the full fault: symptoms, where to look, what to ask the seller

02M112 Oil Heat Exchanger Seal Failure and Crankshaft Pulley Delamination

Inspect the oil heat exchanger housing and gasket face for oil seepage or wet residue.petrol2003–2008Fluid Leaks
OccasionalFluid Leaks $500–$2,000 to fix

Can't confirm for this car

The M112 2.4-litre petrol V6 fitted to early W639 Vito models has two well-documented failure points. First, the oil heat exchanger gasket seal fails from thermal degradation, producing persistent oil leaks from the exchanger housing on the side of the engine. Second, the crankshaft pulley harmonic balancer is prone to delamination of its rubber damping layer after approximately 80,000 km, causing the outer pulley ring to separate. Pulley failure produces vibration, accessory belt misalignment, and if allowed to progress, can damage the crankshaft position sensor and ancillary drive components.

Symptoms to notice

  • Oil leak from side of engine in the vicinity of the oil filter housing or heat exchanger
  • Vibration or rough running at idle that worsens with engine load
  • Squealing or misaligned accessory drive belt
  • Crankshaft position sensor fault codes after pulley delamination

What to check

  1. Inspect the oil heat exchanger housing and gasket face for oil seepage or wet residue.
  2. Check the crankshaft pulley for any visible separation of the rubber damping insert between the inner hub and outer ring — a gap or wobble in the outer ring at idle confirms delamination.
  3. Check accessory belt alignment and condition.

Where to look: Oil heat exchanger on engine block side; crankshaft pulley at front-bottom of engine

Ask the seller

  • “Has the oil heat exchanger gasket been replaced?”
  • “Has the crankshaft pulley harmonic balancer ever been inspected or replaced?”
  • “Is there any oil leaking from the engine or vibration at idle?”
Other Mercedes-Benz Vito engines and years4 documented issues that do not apply to the one you picked.
Engine, transmission & cooling4

01OM611 timing chain wear and tensioner failure

Cold-start the engine and listen for chain rattle in the first 10 seconds before oil pressure builds.diesel1999–2003Engine
CommonEngine $2,800–$5,500 to fix

Does not apply

The pre-facelift W638 Vito's OM611 2.2 CDI diesel engine is notorious for timing chain stretch and hydraulic tensioner failure. Chain slack causes rattling on cold start and can lead to chain jump and catastrophic valve damage. A known design weakness in the early CDI units with insufficient lubrication to the upper chain guide.

The front of a dual overhead camshaft engine with the timing cover removed, exposing the timing chain and sprockets.Example of the part — not this vehicle

The front of a twin-cam engine with the timing cover off — chain, sprockets and guides.

Logansenf · CC BY-SA 4.0 · Wikimedia Commons

Symptoms to notice

  • Rattling noise from front of engine on cold start, fading as oil pressure builds
  • Check engine light with camshaft/crankshaft correlation codes
  • Rough idle or misfires if chain has jumped a tooth
  • Engine will not start or starts and immediately stalls if chain has failed

What to check

Cold-start the engine and listen for chain rattle in the first 10 seconds before oil pressure builds. Scan for P0016/P0017 camshaft correlation faults. Ask for service history showing chain replacement. On high-mileage examples over 200,000 km, assume chain is due.

Where to look: Front of engine, behind the timing cover on the passenger side

Parts involved: Timing chain.

Ask the seller

  • “Has the timing chain been replaced, and at what mileage?”
  • “Does it rattle on cold start?”
  • “Any history of low oil pressure or extended oil change intervals?”

02OM651 timing chain stretch and rattle (W447)

Arrange a genuine cold start - van not run that morning - and listen at the rear of the engine (bellhousing side) for a rattle.diesel2015 onwardEngineRead the full fault: symptoms, where to look, what to ask the seller

03OM651 DPF blockage in urban and short-trip use

Scan for DPF soot loading percentage and back-pressure values.diesel2014 onwardEngineRead the full fault: symptoms, where to look, what to ask the seller

04EGR clogging and DPF/AdBlue faults on urban vans (W447)

Check the dash on start-up and after a decent drive for any emissions, DPF or AdBlue warnings.diesel2015 onwardEngine
CommonEngine $500–$3,500 to fix

Does not apply

OM651 vans doing stop-start city delivery work clog their EGR valves early (often 60,000-80,000 km) and struggle to regenerate the diesel particulate filter, and Euro 6 vans add AdBlue/SCR faults. The result is warning lights, reduced power and limp mode - and a warning light is an instant compliance headache. A van used mainly for short trips is higher risk; a motorway-run van far less so.

Symptoms to notice

  • EGR, DPF or AdBlue/SCR warning light
  • Reduced power / limp mode
  • Rough idle and hesitation
  • Frequent failed regenerations

What to check

  1. Check the dash on start-up and after a decent drive for any emissions, DPF or AdBlue warnings.
  2. Ask what the van was used for - short urban trips are hard on EGR/DPF.
  3. Have codes scanned on an ex-courier van.

Where to look: EGR valve, DPF and SCR/AdBlue system on the engine and exhaust

Parts involved: Diesel particulate filter, EGR valve.

Ask the seller

  • “What work did this van do - city stop-start or motorway?”
  • “Any EGR, DPF or AdBlue warnings, ever?”

Mercedes-Benz Vito faults in detail

Narrowed to the Mercedes-Benz Vito · 2005. 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.

722.6 5-speed auto conductor plate failure and limp mode (W639)Major · TransmissionInjector 'black death' and CDI diesel faults (W639)Major · EngineOM646 EGR valve blockage and oil cooler coolant leakMajor · EngineOM646 Injector Copper Seal Failure — Carbon SeizureMajor · EngineOM646 Timing Chain Tensioner Premature WearMajor · EngineW639 OM646 2.2 CDI Injector Return Pipe and Seal External Fuel LeakCritical · Fluid LeaksW639 OM646 EGR Cooler Internal Coolant Leak into IntakeMajor · CoolingW639 Sliding Door Roller, Guide Rail, and Cable FailureMajor · Body & RustW7B450 gearbox solenoid wear causing harsh downshiftsMajor · Transmission

What these repairs cost on other cars

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

Other Mercedes-Benz models

Mercedes-Benz C-Class41 documented faultsMercedes-Benz A-Class23 documented faultsMercedes-Benz E-Class23 documented faultsMercedes-Benz Sprinter15 documented faultsMercedes-Benz V-Class11 documented faultsMercedes-Benz CLA10 documented faults

Mercedes-Benz Vito buyer questions

Is the Mercedes-Benz Vito reliable?

Like any used car, it depends on the specific example and its service history. Across the 16 documented faults for the Mercedes-Benz Vito, the recurring problem areas are engine, fluid leaks, and transmission. A Mercedes-Benz Vito 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 Mercedes-Benz Vito?

We've catalogued 16 known faults for the Mercedes-Benz Vito, covering engine, fluid leaks, and transmission. All 16 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 Mercedes-Benz Vito?

Most single repairs on the Mercedes-Benz Vito fall between $600–$3,500 at NZ independent-workshop rates. Some of the 16 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 Mercedes-Benz Vito?

Yes. A Mercedes-Benz Vito 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.