How to Challenge an MOT Result in the UK: A Step-by-Step Guide

How to Challenge an MOT Result in the UK: A Step-by-Step Guide

Taking your car for its annual MOT is always nerve-wracking. But what happens if it fails and you're convinced the tester got it wrong? Or what if it passes, only for you to discover a dangerous fault the tester missed?

MOT testers are trained professionals, but mistakes happen and subjective judgements are sometimes too harsh. Before you escalate, check your vehicle's full MOT history online — reviewing past test results and advisories can help you build a stronger case if a tester's decision seems inconsistent with the car's documented record.

Here's how to appeal an MOT failure or report a car that incorrectly passed.

Scenario 1: Appealing an MOT Failure

If your car fails and you think the decision is wrong, act quickly. Do not let anyone repair the vehicle. If the disputed parts are removed, repaired, or replaced, the appeal stops — the DVSA can no longer inspect the original condition.

Step 1: Discuss it with the Test Centre First

Before escalating, speak calmly to the MOT tester or garage manager. Ask them to explain the failure and show you the defective part if it's safe to do so. Sometimes a calm conversation resolves a misunderstanding or borderline decision.

If they won't change their decision and you still think they're wrong, move to Step 2.

Step 2: Leave the Car at the Garage

If possible, don't remove the vehicle from the test centre. If you must drive it away (and it's legal to do so — meaning your old MOT is still valid and the failure wasn't "Dangerous"), don't make any alterations or repairs.

Step 3: Contact the DVSA Immediately

You must appeal to the Driver and Vehicle Standards Agency (DVSA). You have 14 working days from the test date to appeal a failure (unless it's corrosion-related, in which case you have 14 calendar days).

You need to fill out a VT17 form (available online at GOV.UK or from any MOT testing station). You can also call the DVSA customer service line.

Step 4: The DVSA Inspection and the Fee

When you submit a VT17 appeal, you pay the full MOT test fee again to the DVSA.

The DVSA will arrange for an independent vehicle examiner to inspect your car within five working days. You can be present during this inspection.

Step 5: The Verdict

• If your appeal succeeds: The DVSA examiner issues a new MOT certificate (a pass) and your appeal fee is refunded. Disciplinary action may also be taken against the original tester.
• If your appeal is rejected: The original failure stands and you lose the appeal fee. You must then arrange repairs to make the car roadworthy.

Scenario 2: Challenging an Incorrect MOT Pass

It's just as concerning to buy a used car with a fresh MOT, drive it home, and discover a dangerous fault the tester missed. This suggests the test was rushed, incompetent, or fraudulent.

The Time Limits for Reporting a Pass

You can report a garage to the DVSA for passing an unroadworthy vehicle, but strict time limits apply:

• For corrosion-related issues: Report within 3 months of the test date.
• For all other defects: Report within 28 days of the test date.

Step 1: Do Not Repair the Vehicle

As with appealing a failure, don't repair the car before the DVSA inspects it.

Step 2: Report it to the DVSA

Contact the DVSA by phone or via the online reporting service on GOV.UK. You'll need the vehicle's registration number and the MOT test number (on the certificate or via the online MOT checker).

Step 3: The DVSA Inspection

The DVSA may inspect the vehicle. Important: The DVSA cannot force the garage to repair your car or offer compensation.

If the DVSA finds the vehicle shouldn't have passed, they may issue an advisory warning or disciplinary action against the tester or garage. The MOT certificate may be cancelled, meaning you can't legally drive the car until it's repaired and passes a new test.

Seeking Redress

If you bought from a dealer, your main route for compensation is the Consumer Rights Act 2015, which states the car must be of "satisfactory quality" and "fit for purpose." A DVSA finding that the MOT was incorrectly issued is strong evidence to support your claim. Some models attract more MOT disputes than others — our common problems directory surfaces recurring test-station complaints by make and model.

Conclusion

Challenging an MOT isn't something to take lightly. It takes patience and strict adherence to the DVSA's rules — especially the rule about not repairing the vehicle. But if you have strong evidence that a test was unfair or incompetent, the appeal system exists to keep standards high and treat drivers fairly. Before you take delivery of any used car, run a free history check to confirm the MOT record matches what the seller claims.