The 30-minute forecourt checklist for buying a used car
Thirty minutes of focused checks at the forecourt tells you whether the car is right, whether the dealer is honest, and whether the price holds. Here's the checklist.
By WheelsAI Editorial Team · Published
Step by step
- Run the digital checks at home (5 min). Run MOT, tax and inspection history on the VRM. Screenshot the listing photos and last three advisories. This is your evidence if anything on the forecourt doesn't match.
- Insist on a cold start (5 min). Don't let the dealer warm the car up. A cold start exposes worn injectors, low oil pressure, and dodgy starter motors. Long crank or blue smoke = walk.
- Walk around the car (10 min). Check panel gaps for consistency, paint colour matched across panels, tyre brand consistency on each axle, and underneath for fresh oil or coolant drips. A clean coolant-tank cap usually means a maintained car.
- Test drive on real-world conditions (8 min). Cold gearbox shift 1st-to-2nd, steering off-centre at motorway speed, brakes under hard application, and the heating/AC. Skip the radio — listen to the car.
- Ask three closing questions (2 min). Service record? Declared issues? Why is the owner selling? The first confirms paperwork; the second gets known problems on record; the third is social — pauses tell you more than answers.
Before you leave home (5 minutes)
Open WheelsAI. Run the MOT check, tax check and inspection history for the VRM in the listing. Note the last three advisories and the listing's photos. Screenshot. This is your evidence if anything on the forecourt doesn't match.
Arrival and cold start (5 minutes)
Don't let the dealer have the car warmed up. A cold start exposes worn injectors, low oil pressure, and dodgy starter motors. If it cranks for more than a second, ask why. If there's blue smoke, walk.
The walk-around (10 minutes)
Check panel gaps (consistent all the way around), paint quality (one panel a slightly different shade = repair), tyre brand consistency (mixed brands on one axle is a cost corner), and underneath for fresh oil or coolant drips. Open the bonnet, check for the yellow coolant-tank cap cleanliness — clean cap, car has been looked after.
The test drive (8 minutes)
Test these specifically: cold gearbox shift from 1st to 2nd (should be smooth), steering off-centre at motorway speed (pulls = tracking or worse), brakes under hard application (pulsing = warped discs), and the heating/air con. Skip the radio — you want to hear the car.
The final 2 minutes
Ask three questions: what's the service record?, any declared issues?, and why is the owner selling? The first confirms paperwork. The second gets any known problems on record before you sign. The third is social — an uncomfortable pause here tells you more than any answer.
The takeaway
The car passes if: cold start is clean, panels are consistent, test drive is smooth, and the dealer's answers on history and sale reason are straight. Any two fails — walk. Plenty of other listings on WheelsAI.
Frequently asked questions
Frequently asked questions
Should I bring a mechanic?
For anything over £10,000 or unusual (performance, classic, diesel under 30k miles that seems suspiciously cheap), yes. A pre-purchase inspection is £150 and has saved buyers thousands.
What if the dealer won't let me cold-start it?
That is the answer. Walk.