The Five Cheap Parts That Sink November MOTs — and the Driveway Checks That Beat Them
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November is MOT month for a lot of UK drivers. The clocks have gone back, the test centres are busy, and the waiting room is cold. The failures that hurt are rarely glamorous. They are the cheap bits: a bulb, a wiper blade, a tyre, a set of pads, a worn bush. None of these should break the bank, and most can be checked in a driveway with a torch and ten minutes. Here is the five-part trap — and how to beat it before test day.
1. Bulbs
How the tester sees it: every mandatory lamp must work, show the right colour and sit in a suitable housing. A blown brake light, indicator or headlamp is a major defect. Aftermarket LED bulbs in a halogen housing can fail if the beam pattern or colour is wrong.
Driveway check: switch on the lights and walk around the car. Check headlamps, tail lamps, indicators, hazards, brake lights and number plate lights. Use a wall or a helper for the brake lights.
Buying: a branded bulb from a motor factor is fine. Avoid no-name sets from marketplace sellers. Keep a spare pair of common bulbs in the glovebox.
2. Wiper blades
How the tester sees it: the wipers must clear the windscreen properly. Smearing, juddering, splits or a blade that misses a big section can lead to a fail if the driver's view is affected.
Driveway check: lift the blades and run a finger along the rubber. Look for splits, hard spots and missing clips. Wet the screen and run the wipers. If they chatter or leave streaks, change them. Check the washer jets too — a weak jet can be an easy fix.
Buying: decent aftermarket blades are fine. OEM is nice but not essential. Avoid the £3 specials; they tend to last one cold snap.
3. Tyres
How the tester sees it: tread depth must be at least 1.6mm across the central three-quarters of the tyre. Sidewalls are checked for cuts, bulges and cords. The tyre must be the right size and type for the wheel. A TPMS warning light can also cause trouble if the system is fitted.
Driveway check: use a proper tread gauge, not just a 20p coin. Check pressures when cold and look for uneven wear, cracking, nails and bulges. Check the spare if you have one, even though it is not part of the MOT.
Buying: part-worn tyres are a false economy. A budget new tyre from a known brand is usually a better bet than a premium part-worn with unknown history. Match tyres across an axle where you can.
4. Brake pads
How the tester sees it: brake performance is measured on the rollers, and the tester will look at pad condition and warning lights. Pads worn close to the limit may be an advisory; metal-on-metal or a red warning light is a different story.
Driveway check: shine a torch through the wheel spokes. You are looking for friction material thickness, even wear and no separation from the backing plate. Check the brake fluid level. If the pedal feels long or the car pulls, get it looked at properly.
Buying: this is safety-critical. Use pads with an ECE R90 mark from a known brand. OEM or a quality aftermarket pad is the sensible choice, especially if you tow or carry heavy loads.
5. Suspension bushes
How the tester sees it: the tester will pry suspension components and check for excessive play, cracks, splitting and deterioration. Worn bushes can cause knocking, vague steering and uneven tyre wear.
Driveway check: bounce each corner and listen for clunks. With the car safely on level ground, look under the arches with a torch for cracked or perished rubber. Do not crawl under a car held only by a scissor jack. If you are not confident, let a garage check it.
Buying: OEM or a reputable aftermarket bush is fine for normal road use. Very cheap bushes can perish quickly. Polyurethane is an option for enthusiast cars, but it can add noise and harshness.
The November driveway routine
Set aside 20 minutes in daylight. Check tyre pressures and tread. Walk around the lights. Test the wipers and washers. Look at the pads through the wheels. Bounce the corners and listen. Top up the washer fluid with a proper winter mix. If you find a fault, fix it before the test — a re-test fee and another cold wait are worse than a £10 bulb.
You can book an MOT up to a month minus a day before the current certificate expires and keep the same renewal date. That gives you time to sort advisories without losing days. Cheap parts are not the enemy. Cheap rubbish is. Buy sensibly, check the basics, and November's test is a lot less painful.
