What's the most common MOT failure?

In the UK the top failures every year are lights and signalling, suspension, brakes and tyres. Most are cheap to fix in advance — bulbs, wiper blades and tyre pressures alone account for thousands of failures.

Will a dashboard warning light fail my MOT?

Yes, in most cases. Engine management (EML), ABS, airbag, ESC and brake-system warnings are an automatic fail. Get them diagnosed before booking the test — we charge £45 and the fee comes off any repair.

Can I drive my car if it fails the MOT?

Only if the previous certificate is still valid AND there are no 'dangerous' defects. If your old MOT has expired, the only legal journey is to a pre-arranged appointment to fix the failure or a re-test.

Do I need to bring the V5C logbook?

No — the test station looks the vehicle up by registration. But it's good practice to have it in case any details need verifying.

How early can I book my MOT?

Up to 28 days before the current certificate expires without losing any days. The new certificate runs from the old expiry date.

Do you charge for re-tests?

If the repair is done by us within the DVSA-allowed 10-working-day window, the partial re-test is free.

Free Pre-MOT Checklist

Pass your MOT first time — 30-point check

Spend 15 minutes on these six checks before your MOT. They're the same things our DVSA-authorised testers look at first — and they're the reason most local cars fail.

If a dashboard warning light is on, get it diagnosed first — it's an automatic fail in most cases.

Lights & visibility

All headlight bulbs working (dipped, main beam, indicators, brake lights)
No cracked or misaligned light units
Number plate lights working
Front and rear fog lights functional
Wipers don't streak; washer fluid topped up
Windscreen free of cracks larger than 10mm in the driver's view

Tyres & wheels

All four tyres above 1.6mm tread depth across the central 3/4
No cuts, bulges or sidewall damage
Tyre pressures correct (check the pillar sticker)
Spare tyre or repair kit present (if originally supplied)
No missing wheel nuts; locking wheel nut key in the car

Brakes & suspension

No squealing, grinding or pulling under braking
Handbrake holds the car firmly on a slope
No knocking from the suspension over bumps
Steering is straight with no excessive play

Inside the car

All seatbelts retract and lock cleanly
Horn works
Mirrors all present and intact
Driver and front-passenger airbag warning lights off
Front seats move and lock as designed

Under the bonnet

Engine oil between min and max
Coolant and brake fluid topped up
No obvious fluid leaks under the car
Battery terminals secure

Paperwork & basics

V5C logbook to hand (you don't strictly need it but it speeds re-registration if anything changes)
Mileage roughly known (we'll record exact)
Locking wheel-nut key in the car
Boot empty enough to inspect the floor and spare-wheel well

Anything on the list looking iffy? Bring it in for a free 5-minute pre-check before you book the test — way cheaper than paying for a fail.

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MOT preparation FAQs

Quick answers to common questions.