MOT failure rates

Mercedes-Benz V-Class MOT failure rates: what to expect

What fails on a Mercedes-Benz V-Class at MOT, how often, and what each fix typically costs.

Updated 4th September 2026 DVSA data: Across 12,973 recorded MOT tests, 14.8% failed.

The Mercedes-Benz V-Class often faces specific issues during its MOT tests, with common failures including lighting, suspension, and emissions. Typical fixes for these problems can range from minor bulb replacements to more significant repairs, such as suspension component replacements or exhaust system repairs, affecting overall maintenance costs.

Lighting Failures

One of the most frequent reasons for MOT failure in the Mercedes-Benz V-Class is lighting issues. This can include problems with headlights, brake lights, or indicators. A blown bulb is often the culprit, which is a simple fix.

Regular checks can prevent these issues, ensuring that all lights are functioning correctly before the MOT.

Suspension Problems

Suspension components are another area where the V-Class can struggle during an MOT. Common failures include worn shock absorbers or damaged springs. These components are crucial for vehicle stability and comfort.

If multiple components need attention, the costs can add up quickly. Regular maintenance and inspections can help identify these issues before they lead to an MOT failure.

Emissions Failures

Emissions testing is a critical part of the MOT, and the V-Class can sometimes fail due to high emissions levels. This can be caused by a faulty exhaust system, including issues with the catalytic converter or diesel particulate filter.

Repairs for emissions-related failures can vary significantly. Keeping the engine well-maintained and ensuring regular servicing can help mitigate these issues.

Brake System Issues

The brake system is vital for safety, and any problems here can lead to an MOT failure. Common issues include worn brake pads, discs, or fluid leaks. The V-Class is known for its robust braking system, but neglect can lead to failures.

If there are leaks in the brake lines, repairs can be more complex and costly. Regular brake inspections can help catch these issues early, ensuring safety and compliance.

Tyre Condition

Tyres are a crucial aspect of vehicle safety and are often a reason for MOT failures. The V-Class requires tyres with a minimum tread depth of 1.6mm. Worn or damaged tyres can lead to an MOT failure and pose safety risks.

Regularly checking tyre pressure and tread depth can help avoid last-minute replacements before the MOT. Keeping tyres in good condition is essential for both safety and compliance.

Steering and Alignment Issues

Steering and alignment problems can also lead to MOT failures in the Mercedes-Benz V-Class. Common issues include worn steering components or misalignment, which can affect handling and safety.

Regular checks and adjustments can help maintain proper steering and prevent MOT failures.

Mercedes-Benz V-Class recall record

37 recalls have been issued for the Mercedes-Benz V-Class, between 2015 and 2024.

  1. SRPC2420 – Fastening of Steering Wheel Height Adjustment

    R/2024/475

    Issued 29 November 2024

    The fastening of the steering wheel height adjustment might not meet specifications.

    Remedy:Mercedes-Benz AG via its Mercedes-Benz service partners will replace the steering column tube on the affected vehicles.

    Affects cars built Feb 2024 to Feb 2024

  2. On affected vehicles the routing of the fuel filter drainpipe might not meet specifications. The drainpipe could come into contact with the underbody and become damaged leading to a diesel leak.

    R/2023/011

    Issued 27 January 2023

    On affected vehicles the routing of the fuel filter drainpipe might not meet specifications. The drainpipe could come into contact with the underbody and become damaged leading to a diesel leak.

    Remedy:Replace the drainpipe with a drain plug on the affected vehicles.

    Affects cars built Oct 2020 to Jul 2021

  3. The routing of the interior wiring harness in the area of the centre console might not meet specifications

    R/2022/335

    Issued 29 November 2022

    On certain righthand drive VClass (447 platform) vehicles the routing of the interior wiring harness in the area of the centre console might not meet specifications.

    Remedy:Check the wiring harness on the affected vehicles and rework it if necessary.

    Affects cars built Jun 2020 to Oct 2020

  4. THE COOLANT PUMP MIGHT HAVE A LEAKAGE BETWEEN THE VACUUM SYSTEM AND THE COOLANT CIRCUIT

    R/2022/005

    Issued 12 May 2022

    On certain vehicles with an OM654 engine the coolant pump which is controlled by vacuum might have a leakage between the vacuum system and the coolant circuit.

    Remedy:Update the software of the coolant pump and replace the electrical switch valve on the affected vehicles.

    Affects cars built Jan 2019 to Nov 2021

33 older recalls not shown.

A recall applies to a build range, not to every car of this model. Check a registration to see whether one specific vehicle has an outstanding recall.

Mercedes-Benz V-Class MOT record

From 12,973 recorded MOT tests, 14.8% failed.

MOT pass and failure rates by year of first registration
RegisteredTestsFailedMedian mileage
20252492.0%272 mi
20244725.9%26,514 mi
20233688.2%38,540 mi
202260013.0%33,972 mi
202156315.1%41,778 mi
202091614.8%60,968 mi
20192,86013.3%89,320 mi
20182,37515.1%89,094 mi

Most common reasons for failure

  1. Tyre tread depth not in accordance with the requirements40.7%
  2. A tyre seriously damaged17.0%
  3. A suspension pin, bush or joint excessively worn15.0%
  4. A spring or spring component fractured or seriously weakened14.6%
  5. a brake lining or pad worn below 1.5mm12.7%

Figures cover every Mercedes-Benz V-Class tested in the DVSA dataset, not this specific car. Check a registration for the actual history of one vehicle.

Mercedes-Benz V-Class official figures

Median across 10 variants on sale, diesel.

Combined economy
37.7 mpg
WLTP median across variants
CO2 emissions
196.5 g/km
Sets the first-year tax rate

Official figures for new cars. Real economy varies with driving, load and conditions.

Frequently asked questions

What is the Mercedes-Benz V-Class mot?

The Mercedes-Benz V-Class mot refers to the Ministry of Transport test that checks the vehicle's safety and environmental standards. It is a legal requirement for vehicles over three years old in the UK.

How often do I need to get my V-Class mot done?

You need to have your V-Class mot done annually once it reaches three years old. It's important to keep up with this to ensure your vehicle remains roadworthy.

What happens if my V-Class fails the mot?

If your V-Class fails the mot, you will receive a list of issues that need to be addressed. You will need to fix these problems and have the vehicle retested before it can be legally driven.

Can I drive my V-Class if the mot has expired?

No, you cannot legally drive your V-Class if the mot has expired, unless you are driving it to a pre-booked mot appointment. Doing so can result in fines and penalties.

Where can I get my Mercedes-Benz V-Class mot done?

You can get your V-Class mot done at any authorised mot testing centre in the UK. Many garages and dealerships offer this service, so you can choose one that is convenient for you.

What documents do I need for the mot test?

You should bring your V-Class registration document and any previous mot certificates. It's also helpful to have your insurance details and service history available.

How long does the mot test take?

The mot test typically takes about 45 minutes to an hour. However, it may take longer if repairs are needed or if the garage is busy.

Is there anything I can do to prepare my V-Class for the mot?

Yes, you can check the lights, brakes, and tyres before the mot. Ensuring your vehicle is clean and well-maintained can also help the test go smoothly.

Sources