Inspecting a pre-warmed car
A cold start is a one-time diagnostic event per visit: startup rattles, smoke on first fire and cold-idle behaviour reveal wear that disappears within a minute of running. Sellers who warm the car before you arrive erase that evidence, deliberately or not. Ask for the car cold, and in summer add a hot-restart test after a ten-minute heat soak.
Reading a cleared fault memory as a clean car
An empty fault list with incomplete readiness monitors means the memory was wiped recently, which is the opposite of reassuring. Insist on a re-scan after 50-100 km of driving, or make the deal conditional on it. The absence of history is a finding, not a pass.
Letting evening light close the deal
Forecourt lighting and Ramadan-hour viewings flatter paintwork: colour mismatch, orange peel and filler ripples vanish under artificial light. Do the conversation at night if you must, but make the final decision after the car has been seen washed, in low-angle daylight, ideally with gauge readings across every panel.