A test drive isn't a taste of ownership — it's a 20-minute inspection window that the seller has prepared for and you probably haven't. Most buyers drive around the block, say "pulls well", and negotiate on vibes. Here's the checklist that finds the problems instead.

Before You Leave Home

1. Run the reg. MOT history, advisories, mileage trail, valuation. Ten minutes at home beats two hours travelling to a car with a horror record — and the history tells you exactly what to inspect in person (that recurring "slight oil leak" advisory? You're looking under the engine today)
2. Check you're insured to drive it. Dealers have trade cover; for private sales you need DOC cover on your policy (increasingly rare) or a one-day policy from a few pounds. Driving uninsured "just around the block" risks points and seizure
3. Plan to arrive early — you want to see the cold start, not the pre-warmed engine a canny seller prepared

The Cold Start (Minutes 0–2)

4. Touch the bonnet before it starts. Warm bonnet = pre-warmed engine = ask why, and treat startup smoke evidence as hidden
5. Watch the exhaust on first fire: a puff that clears is condensation; sustained blue smoke is oil, white sweet-smelling smoke is coolant — both walk-away territory on top of asking price
6. Dashboard sweep: every warning light should illuminate with ignition, then extinguish. A light that never comes on may have had its bulb pulled — airbag lights especially
7. Listen for the first ten seconds: rattles at cold start that fade (timing chains, hydraulic lifters) are the sounds sellers time their warm-ups to hide

On the Move (Minutes 2–15)

8. Steering, hands light on the wheel: the car should track straight on a flat road. Pulling or an off-centre wheel means alignment at best, accident geometry at worst
9. Brake hard once (safely, warned passengers): firm progressive pedal, no pulling, no pulsing through the wheel (warped discs), no grinding
10. Clutch bite point: high bite or slipping under acceleration in a high gear = clutch approaching £500–£1,200. In 4th gear at 30mph, floor it — revs rising without speed is slip
11. Manual gearbox: every gear including reverse, no crunching (worn synchros), no jumping out of gear on the overrun
12. Automatic gearbox: smooth shifts when cold and warm, no thumps in stop-start crawling, kickdown works. DSG/dual-clutch: creep at parking speeds should be judder-free
13. Suspension over bad roads: seek out speed bumps and potholes. Knocks and clonks are bushes and drop-links (cheap-ish); a floaty, uncontrolled ride is dampers (less cheap)
14. Full-lock manoeuvres: clicking on full lock in a front-driver = CV joints
15. Motorway speed if possible: vibrations, wind noise, wandering — problems that never appear at 30mph

The Stationary Checks (Minutes 15–20)

16. Electrics sweep: every window, mirror, the air con (must blow properly cold), heater, heated seats/screen, infotainment, all cameras and sensors, sunroof. Each broken item is £100–£500 off
17. Under the bonnet after the drive: oil cap underside (mayonnaise = possible head gasket), coolant level and colour, any fresh drips below the car where it stood
18. Tyres, all four plus spare: uneven wear across a tread face is alignment or suspension telling tales; four different budget brands tells you about the owner
19. Panel gaps and paint in daylight: mismatched shades, overspray on rubbers, one door's gap wider than its twin — repair evidence the MOT record won't show. Cross-reference with what a write-off check would reveal
20. VIN check: windscreen VIN matches door pillar matches V5C. Sixty seconds against the cloned-car scam

Walk-Away vs Negotiate

Walk away for: coolant-in-oil evidence, sustained exhaust smoke, gearbox crunches or shudders, steering pull with accident-suggestive panel work, any VIN inconsistency, or a seller who resists any check on this list — pressure is information.

Negotiate on: worn clutch, tired suspension, broken electrics, tyres near the limit, air con needing a re-gas — priced with real repair numbers, which is exactly the evidence-first approach from our negotiation guide.