10 Reasons Your Car Might Fail Its MOT: 5 Signs Your Brakes, Clutch & Exhaust Are Struggling

Worn tyres increase stopping distances by reducing traction, particularly in wet conditions.

Many drivers opt for mobile tyre fitting services to swiftly replace worn tyres without going to a garage.

5. Incorrect Tyre Pressure

Although tyre pressure has a direct impact on handling, braking, and tyre wear, many drivers ignore it.

Adhere to Tyre Pressure in Summer: The 1-PSI Rule by routinely checking your tyre pressure in hot weather, as rising temperatures naturally cause tyre pressure to rise.

6. Suspension Problems

Vehicle stability is decreased by damaged suspension parts.

Signs consist of:

• Uneven tyre wear
• Sounds of knocking
• Too much bouncing
• The car is pulling to one side.

These flaws are typical MOT failures.

7. Steering Faults 

Because they impair vehicle control, loose steering, worn joints, or damaged steering racks can trigger an instant MOT failure.

8. Lights Not Working

Every outdoor light needs to operate properly.

Verify:

• Brake lights
• Indicators for Headlights
• Lights on licence plates
• Lights in reverse

One of the simplest ways to prevent failure is to replace defective bulbs before your MOT.

9. Windscreen Damage 

An MOT failure could be caused by significant chips or fractures in the driver's field of view.

Before they spread, even tiny chips should be fixed right away.

10. Excessive Emissions 

Emissions checks are part of modern MOT exams.

Typical reasons consist of:

• Defective catalytic converters
• Issues with oxygen sensors
• Faults in engine management
• Damaged exhaust systems that are damaged