What Happens If Your Car Fails Its MOT?

Failing an MOT can be stressful. You might be asking:

• Can I still drive my car?
• Do I have to repair it immediately?
• Will I get fined?
• How much will repairs cost?
• Is it worth fixing at all?

If your car has failed its MOT test, this guide explains exactly what happens if your car fails its MOT and how to get back on the road safely and affordably.

What Does It Mean If Your Car Fails Its MOT?

An MOT test checks whether your vehicle meets the minimum legal road safety and environmental standards in the UK.

If your car fails, it means at least one part of the vehicle does not meet those standards.

You will receive a VT30 “Refusal of an MOT Test Certificate”, and this lists the faults found during the test.

These faults are categorised by severity.

What Documents Do You Receive After a Failed MOT?

After a failed MOT, the garage will issue a VT30 certificate (Refusal of an MOT Test Certificate).

This document includes:

• A full list of faults
• Whether each fault is dangerous, major or minor
• Advisory notices
• The test date and expiry status

Keep this document safe. You may need it:

• For repair quotes
• For insurance discussions
• If appealing the result

If your car previously had a valid MOT certificate, that certificate remains valid until its expiry date. Unless the new test identified dangerous faults.

The Three Types of MOT Faults Explained

Understanding the type of fault is essential because it determines whether you can legally drive the car.

Dangerous Faults

Dangerous faults are serious safety issues.

Examples include:

• Severely worn brake pads or discs
• Tyres below the legal 1.6mm tread depth
• Steering defects
• Major structural corrosion
• Faulty seatbelts

If your car has a dangerous fault:

• You cannot legally drive it
• It must be repaired before being used on the road
• Driving it could result in fines and penalty points

Even if your previous MOT certificate is still valid, dangerous faults override it.

Major Faults

Major faults cause your car to fail the MOT but are not necessarily immediately dangerous.

Examples:

• Faulty headlights
• Suspension wear
• Exhaust emissions too high
• Brake imbalance

If your previous MOT is still valid, you may be able to drive the car but only if it remains roadworthy.

Once the previous MOT expires, you can only drive it to a pre-booked MOT test or repair appointment.

Minor Faults (Advisories)

Minor faults do not cause a failure but are issues to monitor.

They could lead to failure in the future if ignored.

Examples include:

• Slight tyre wear
• Small oil leaks
• Minor suspension wear

Advisories are early warnings.

Can You Drive If Your Car Fails Its MOT?

This depends on:

• The type of fault
• Whether your previous MOT is still valid
• Whether the vehicle is roadworthy

You can legally drive only if:

• There are no dangerous faults
• Your previous MOT has not expired
• You are driving to a pre-booked test or repair

Driving without a valid MOT can result in a fine of up to £1,000.

Driving a vehicle deemed dangerous can lead to fines up to £2,500, three penalty points, or even a driving ban.

What Should You Do Immediately After a Failed MOT?

• Carefully review the fault list
• Identify dangerous vs major issues
• Ask for a detailed written repair quote
• Compare options if needed
• Book repairs quickly

Do not panic. Most MOT failures are fixable.

Do You Have to Fix the Car at the Same Garage?

No.

You are not legally required to use the same garage for repairs.

However, there are advantages to staying:

• Faster turnaround
• No need to transport the vehicle
• Potential free retest

Always ask for a breakdown of parts and labour before agreeing to work.

What Is a Free MOT Retest?

Many garages offer a free retest if:

• Repairs are completed at the same garage
• The retest takes place within 10 working days

If repairs are done elsewhere, a partial retest fee may apply.

After 10 working days, you may have to pay for a full MOT again.

How Much Does It Cost to Fix a Failed MOT?

Repair costs vary widely.

Typical UK repair ranges:

• Brake pads: £100–£250
• Tyres: £70–£150 each
• Suspension parts: £150–£400
• Exhaust system repairs: £200–£600
• Headlight replacement: £100–£300
• Windscreen replacement: £200–£400

The total cost depends on:

• Vehicle make and model
• Severity of damage
• Parts required
• Labour time

Comparing garage prices can significantly reduce your bill.

How Long Does an MOT Repair Usually Take?

Repair time depends on the fault severity.

Typical timeframes:

• Brake pad replacement: 1–2 hours
• Tyre replacement: 30–60 minutes per tyre
• Suspension component replacement: 2–3 hours
• Exhaust replacement: 1–3 hours

More complex structural repairs may take several days.

If the vehicle is undriveable, you may need recovery transport.

Most Common Reasons Cars Fail Their MOT

According to UK testing data, the most common MOT failures include:

• Lighting and signalling faults
• Suspension wear
• Brake issues
• Tyres below legal limit
• Windscreen damage
• Excess emissions

Many of these can be checked before the test.

How to Reduce the Risk of Failing an MOT

Before your MOT:

• Check all exterior lights
• Inspect tyre tread depth (minimum 1.6mm)
• Ensure number plates are clean
• Top up screenwash
• Clear warning lights
• Check wipers are effective

Simple checks can prevent unnecessary failure.

What Happens If You Ignore a Failed MOT?

Ignoring a failed MOT can lead to:

• Fines
• Invalid insurance
• Increased repair costs
• Breakdown risk
• Legal penalties

Driving without a valid MOT (unless heading to a pre-booked appointment) is illegal.

Can You Appeal an MOT Failure?

Yes.

If you believe the MOT result was incorrect, you can:

• Request a re-examination
• Contact the Driver and Vehicle Standards Agency (DVSA)
• Appeal within 14 working days

You may need to leave the vehicle in its failed condition for inspection.

Is It Worth Repairing or Scrapping the Car?

If repair costs exceed the vehicle’s value, scrapping may be an option.

However, most MOT failures are relatively affordable.

Before deciding:

• Compare repair quotes
• Consider vehicle condition
• Consider resale value after repair

What Is the Difference Between MOT Failure and a Service Issue?

An MOT is a legal safety test.

A service is preventative maintenance.

Your car can:

• Pass an MOT but still need servicing
• Fail an MOT even if recently serviced

MOT checks safety and emissions standards only — it does not replace routine maintenance.

Regular servicing reduces the likelihood of failing your MOT.

Will a Failed MOT Affect My Insurance?

Driving an unroadworthy vehicle can invalidate insurance.

If you are involved in an accident and your car was unsafe, your insurer may refuse to pay out.

Always repair dangerous faults immediately.

Final Advice: What Happens Next?

Failing an MOT is common and usually manageable.

The key is:

• Understand the fault severity
• Act quickly
• Compare repair costs
• Complete retest within 10 working days
• Do not drive illegally

Taking prompt action keeps you safe, legal, and back on the road quickly.

So now you know what happens if your car fails its MOT.

Ready to Book Repairs or an MOT Retest?

Instead of ringing around multiple garages, you can:

• Compare local repair prices
• Read verified reviews
• Book your MOT or repairs online

Getting back on the road doesn’t need to be stressful.