MOT Retest Rules: When Is a Retest Free?

Receiving a VT30 refusal notice at the end of an MOT is frustrating, but it is not the end of the road. The UK has clear MOT retest rules free retest entitlements built into the system, meaning you may not have to pay the full test fee again — provided you meet certain conditions. This guide explains those conditions in plain English and helps you avoid being charged more than necessary.

What Is an MOT Retest?

An MOT retest is a follow-up inspection carried out after a vehicle has failed its initial test. Rather than repeating the entire MOT, a retest only covers the items that originally failed. Items that passed the first time are not retested, which saves both time and, in many cases, money.

Retest entitlements depend on two key factors: where the repair is carried out and when the vehicle is brought back. The DVSA sets the framework for these rules, but individual garages have some discretion in how they apply charges — particularly if you choose to take your car elsewhere for repair.

When Is a Retest Completely Free?

A free retest is available when all three of the following conditions are met:

• The car is left at the test station immediately after failing (i.e., you do not drive it away).
• The repairs are carried out by that same test station.
• The retest takes place on the same working day or, if the vehicle is left overnight, before close of business the following working day.

If you satisfy all three conditions, the garage must retest the failed items at no additional charge. This arrangement works well for minor failures — a blown bulb, a cracked wiper blade, or a low screenwash reservoir — that can be fixed quickly and cheaply at the test centre itself.

When Is a Retest Partial or Chargeable?

If you drive the car away from the test station to have repairs done elsewhere (at a specialist garage, for example) and return within 10 working days of the original test, you are entitled to a partial retest. The tester will only recheck the items that failed — they will not repeat the full MOT.

However, under these circumstances the garage is entitled to charge a partial retest fee. The maximum fee for a partial retest on a standard private car is capped by the DVSA at £54.85, though many garages charge less. This is still substantially cheaper than paying for a full MOT from scratch, which is currently capped at £54.85 for the full test on cars.

If more than 10 working days have passed since your original failure, the garage must carry out a complete new MOT at the full fee. The partial retest entitlement has expired.

Defect Categories and How They Affect Retest Rules

Since May 2018, MOT defects have been categorised into three tiers:

• Dangerous — the vehicle poses a direct risk to road safety and must not be driven. Examples include severely worn brake pads or a detached steering component.
• Major — a significant defect that must be repaired before the vehicle can be used on the road legally.
• Minor (Advisory) — items that are not yet at failure point but should be monitored or repaired soon.

Vehicles with dangerous defects technically cannot be driven to a repair garage — doing so is illegal. In practice, you will need to arrange collection via a recovery truck or have a mobile mechanic attend the test station. Once repairs are complete, the same retest window applies.

Advisory items do not cause a failure and therefore do not trigger a retest. However, they are worth addressing before your next annual MOT to avoid them escalating into a chargeable failure. You can review all historical advisories by running a free MOT history check.

Can You Get a Retest at a Different Garage?

Yes. You can take your vehicle to any DVSA-authorised MOT test station for a retest — it does not have to be the original garage. The partial retest rules still apply provided you are within the 10-working-day window. The new garage will ask to see the original VT30 refusal notice so they know exactly which items to retest.

Changing garages can sometimes be worthwhile if you have lost confidence in the original tester, if the original garage quoted an excessive repair cost, or if a specialist is better placed to carry out a particular fix (a tyre specialist for a tyre-related failure, for example).

Borderline Failures and Requesting a Review

If you believe your vehicle was failed incorrectly or unfairly, you can request a free review from the DVSA. This must be done within 28 days of the original test. The DVSA will arrange for a Vehicle Standards Assessor (VSA) to inspect the vehicle independently. If the VSA finds the original tester made an error, the result can be overturned and you may be eligible for a refund of any costs you incurred. Note that the DVSA will not review subjective matters of degree — they will only assess whether the correct procedure was followed and whether the defect existed.

Before your next MOT, reduce your chances of a failure by working through our MOT preparation checklist and reviewing the most common MOT failure points. The more prepared you are, the less likely you will need to rely on the MOT retest rules free retest provisions at all.