Check belts, cam chains and tensioners have all been replaced within the last four years or 40,000 miles. Budget £1,000 if not.
Listen for any whines from the differential that point to a worn pinion bearing. Fixing this is a £2,000 job.
Check for a leaky clutch master cylinder
Vibration through the steering wheel during the test drive is probably a worn engine mount.
Rolling chassis
Cracked front A-arms are simple and cheap to replace.
Brake calipers can separate from their back plates and need to be rebuilt.
Plastic trim on sill covers goes brittle and pulls away, causing the cover to rattle.Rear arches rust on cars that have been left standing.
Sunroof leaks as the panel warps.
Headlights can be left standing upright if mechanism becomes seized and rusty.Bonnet struts weaken with age.
Cabrio roof is £1,000 to replace and have fitted.
Smell for signs of damp and check boot for sun damage to carpet and luggage cover.
Driver's seat outer bolster wears.
Make sure heating and air con, if fitted, work properly.
Inspect gear lever and handbrake for worn leather covers.