Can You Drive a Car That Has Failed Its MOT?

Can You Drive a Car That Has Failed Its MOT?

The answer depends on two things, the type of fault and whether your previous MOT is still valid. If the car has a dangerous fault you must not drive it at all. If it only has major faults and your old MOT has not yet expired, you may still be able to drive it, although the car is not really roadworthy.

A dangerous fault is the clear line. It means the car is an immediate risk to safety, so it must not be driven on the road until it is repaired, no matter what any certificate says. Driving a car with a dangerous fault can bring a heavy fine and penalty points. Our guide on When Your Car Fails an MOT explains what each fault category means.

The picture is different for a major fault. If your previous MOT is still valid and the only faults are major rather than dangerous, driving can be legal until that certificate expires. Even so, the car has failed for a reason, so the safe course is to get it repaired quickly rather than relying on the old certificate.

When You Can and Cannot Drive

It helps to see the situations side by side, since the answer hinges on the fault type and your old certificate. The table below sets out the common cases.

The safest reading of the table is simple. A dangerous fault means do not drive. Any fail is a signal to repair the car promptly. Our guide on Driving Without an MOT covers the wider rules on driving without a valid test.

Why a Dangerous Fault Means Stop

A dangerous fault is named that way for a reason. It marks a defect that presents a direct and immediate risk to you and to other road users, such as badly worn brakes or a steering fault. The law is firm here, since driving a car in that state endangers everyone around it.

If your car fails on a dangerous fault the sensible course is to have it repaired at the test centre or recovered to a garage rather than driven. This keeps you legal and safe while avoiding the heavy penalties that come with driving a dangerous vehicle. Our guide on MOT Retest Rules explains the retest that follows the repair.

Why Prompt Repair Is Always Best

Even when driving after a fail is technically legal, it is rarely the wise choice. A car that has failed has done so because something does not meet the standard, so every mile driven on it carries a little more risk. Relying on an old certificate to keep driving a failed car misses the point of the test.

The simplest and safest route is to get the faults repaired straight away, ideally at the garage that carried out the test. Booking with a centre that can test and repair in one visit means a fail is dealt with quickly without the car being driven around in the meantime. Our guide on MOT Retest Rules explains the free retest window that rewards a prompt repair.

How a Failed MOT Affects Your Insurance

There is an insurance angle to driving after a fail that is easy to overlook. If you drive a car that has failed on a dangerous fault and are then involved in an accident, an insurer could argue the car should not have been on the road. That can put a claim for your own vehicle at risk, on top of any fine or points.

This is another reason to treat a dangerous fail as a full stop rather than a suggestion. Keeping an unroadworthy car off the road protects both your safety and your cover. Once the repairs are done and the car has passed its retest, everything is back on solid ground. Our guide on No MOT and Insurance explains how a missing or invalid MOT can affect a claim.

Get Back on the Road Safely

This guide is part of our full MOT Guides hub, where the testing, cost and rules articles sit together so you can move to the exact detail you need next. When it is time to book, our team offers full MOT testing and repairs from our centre in Ely. You may also find it useful to read When Your Car Fails an MOT, MOT Retest Rules and Driving Without an MOT.

Common Questions