Many UK drivers have questioned whether MOT testers are biased, especially after unexpected fails or advisories. While most garages conduct fair and professional tests, concerns about inconsistency do exist. Fortunately, the Driver and Vehicle Standards Agency (DVSA) has strict systems in place to ensure MOT results remain accurate, consistent, and impartial across the country.

This article explores how MOT testing is regulated, how bias is prevented, and what drivers can do if they suspect unfair treatment.

How the MOT System Works

The MOT test is a mandatory annual inspection for vehicles over three years old to ensure they meet road safety and environmental standards. It covers critical components such as brakes, tyres, lights, and emissions.

MOT tests are carried out by authorised testing centres (VTS) approved by the DVSA. Each centre employs qualified MOT testers, who must undergo regular training and assessments to maintain their certification.

The goal is to maintain a consistent standard—no matter where in the UK you take your vehicle.

Can MOT Testers Be Biased?

In theory, MOT testers should be completely impartial. However, since MOT tests are often conducted in garages that also offer repairs, some drivers worry about a conflict of interest. A garage might fail a car for a minor issue, then offer to fix it for a fee.

While this situation can happen, it’s important to note that strict DVSA regulations make deliberate bias a serious offence. Testers caught falsifying results or unfairly failing vehicles risk losing their licence, fines, and prosecution.

Moreover, all test results are recorded digitally in the DVSA’s MOT database, which helps track patterns in test outcomes. Unusual trends—like one garage failing far more cars than average—trigger an investigation.

How MOT Results Are Regulated

The DVSA constantly monitors garages and individual testers using advanced analytics. Random compliance checks, mystery shopper tests, and digital audits are conducted throughout the year.

Each tester also receives a Risk Rating based on their testing history. Those with higher risk scores face more frequent inspections. This system helps maintain fairness and ensures the same standards apply nationwide.

Additionally, CCTV and test logs in many garages help verify that tests are performed correctly, adding another layer of accountability.

What to Do If You Suspect Bias

If you believe your MOT result is unfair, you can:

1. Request a Retest – You can take your car to another authorised MOT centre for a second opinion.
2. Report to the DVSA – Use the official GOV.UK website to report a suspected unfair MOT test. The DVSA may investigate the garage’s practices.
3. Appeal the Result – Within 14 working days, you can appeal an MOT result by filling out form VT17 via the DVSA.

Before you appeal, it’s worth checking your MOT history online to confirm past results and advisories. You can easily do this at CheckMot.com using your vehicle’s registration number.

FAQs

1. Can MOT testers fail your car unfairly?

It’s rare, but possible. If you suspect unfair treatment, you can appeal to the DVSA for a review.

2. Are MOT garages monitored by the government?

Yes. The DVSA monitors all approved MOT centres and testers to ensure compliance with regulations.

3. Can I choose where to do my MOT?

Absolutely. You can take your vehicle to any DVSA-approved garage in the UK.

4. How do I find a reliable MOT tester?

Look for garages with good reviews and transparent pricing, or check their status through official MOT databases.

While occasional disputes arise, the MOT system in the UK is designed to be fair and transparent. DVSA oversight ensures that bias in MOT testing remains minimal—so drivers can trust their results and stay safe on the road.