Getting your car ready for its MOT doesn't need to be stressful. With a bit of preparation, you can catch many common failure points before they cost you a re-test. Here's my comprehensive pre-MOT checklist.
Lights and Indicators
Check these before your test:
- ▸Headlights (both dipped and full beam)
- ▸Sidelights
- ▸Brake lights (you'll need someone to help or use a reflection)
- ▸Indicators front and rear
- ▸Hazard warning lights
- ▸Number plate light
- ▸Rear fog light(s)
A single bulb failure is an instant MOT failure. They're cheap and easy to replace - most can be done in minutes without tools.
Tyres and Wheels
Tyres are one of the most common MOT failures. Check:
- ▸Tread depth: Minimum 1.6mm across the central three-quarters of the tyre
- ▸No cuts, bulges, or damage to the sidewalls
- ▸Correct pressure (check your car's handbook)
- ▸Wheel nuts all present and tight
- ▸No cracks or damage to alloy wheels
Pro tip: If your tread is close to 1.6mm, it's worth replacing before the MOT. You'll need new tyres soon anyway, and it saves a re-test.
Brakes
The MOT tests:
- ▸Brake efficiency (stopping power)
- ▸Brake imbalance (brakes working evenly)
- ▸Handbrake operation and efficiency
- ▸Brake pad and disc condition (visible through wheel)
If your brakes feel spongy, make noise, or the handbrake doesn't hold on a hill, get them checked before the test.
Windscreen and Wipers
Your MOT will fail if:
- ▸There's a chip bigger than 10mm in the driver's A-zone (directly behind the wheel)
- ▸There's a crack longer than 40mm anywhere on the windscreen
- ▸Wipers don't clear the screen effectively
- ▸Washer bottle is empty or system doesn't work
Get chips repaired before they spread - most insurance policies cover this with no excess.
Mirrors and Indicators
You need:
- ▸Driver's side mirror in good condition
- ▸Interior mirror (or passenger mirror on van conversions)
- ▸All indicators working
- ▸No cracks or damage affecting visibility
Exhaust and Emissions
The test includes:
- ▸Exhaust emissions levels (petrol, diesel, or hybrid)
- ▸Exhaust system security (no loose or hanging parts)
- ▸No excessive smoke
- ▸Catalytic converter present (if originally fitted)
A warning light on the dashboard for emissions will fail the MOT. Get it diagnosed first.
Suspension and Steering
Check for:
- ▸Excessive play in steering wheel
- ▸Worn ball joints or track rod ends
- ▸Leaking shock absorbers
- ▸Broken springs
- ▸Worn bushes
Drive over speed bumps - if it bounces more than once or makes clunking noises, book a check before the MOT.
Registration Plate
Your plate must:
- ▸Be clean and clearly visible
- ▸Have correct spacing and sizing
- ▸Not be damaged or faded
- ▸Be securely fixed
- ▸Comply with current regulations (no fancy fonts!)
Seat Belts
All seat belts must:
- ▸Be present and working
- ▸Retract properly
- ▸Show no fraying or damage
- ▸Latch securely
Warning Lights
Any warning light illuminated on the dashboard can fail the MOT, especially:
- ▸Engine management light
- ▸ABS warning light
- ▸Airbag warning light
- ▸Brake system warning light
Get these diagnosed before the test - they could indicate serious issues.
Horn and Controls
Quick checks:
- ▸Horn works and sounds appropriate
- ▸All dashboard switches and controls operate properly
- ▸Boot opens and closes securely
- ▸Bonnet release works and bonnet props hold
- ▸Fuel cap fits securely
Common Failures to Avoid
The most common MOT failures are:
1. Lights (34% of failures) - Check everything! 2. Brakes (10% of failures) - Get spongy pedals checked 3. Suspension (9% of failures) - Listen for clunks 4. Tyres (7% of failures) - Check depth and pressure 5. Issues affecting driver's view (5%) - Chip repairs
What to Bring to Your MOT
- ▸Vehicle registration document (V5C)
- ▸Current MOT certificate if you have one
- ▸Any advisories from last year's test
My Pre-MOT Check Service
I offer a pre-MOT inspection for £25, where I'll check everything on the official test. If I find issues, I can often fix them there and then, saving you a failed MOT and re-test fee.
Most importantly, I'll give you honest advice - if something will fail but you can't afford to fix it right away, I'll tell you what's critical vs what's an advisory.
A bit of preparation can save you time, money, and stress. Check these items a week before your MOT, and you'll stand the best chance of a first-time pass.
When it's time for the test itself, our MOT testing service starts from £40, and we'll sort any brake or diagnostic issues that come up so a fail doesn't catch you out. We come to you across the Black Country, from Stourbridge to Halesowen. For more, read how much an MOT really costs and what happens if it fails and our 5 signs your brakes need attention.