05
Pre-purchase inspection checklist
25 inspection items across 5 groups
Bring with you
Print or download this checklist before going to the lot
Bring a small flashlight for inspecting undercarriage and engine bay
Carry a tire tread depth gauge — legal minimum is 2/32”, replace at 4/32”
Have the VIN ready to run a same-day recall check at recalls.nhtsa.dot.gov
Confirm a pre-purchase inspection mechanic is available for a same-day appointment
Cold-start test
Arrive before the seller has warmed up the car — cold start reveals the most
Listen for the first 30 seconds: any knock, tick, or rough idle is a red flag
Watch the exhaust: blue smoke signals burning oil, white smoke points to coolant
Verify the N55 settles to a smooth, consistent idle within 60 seconds
Check that no warning lights remain illuminated once the engine is running
Under the hood
Inspect the valve cover for oil seepage — common on N55 at this mileage
Check the coolant expansion tank for cracks, discoloration, or residue inside
Verify the electric water pump runs smoothly — listen for bearing noise
Look for fresh sealant or signs of recent coolant hose replacement
Confirm the HPFP service campaign is closed on the service records
Test drive
Accelerate hard from 30–70 mph and listen for any hesitation or stumble
Check the transmission for smooth, decisive shifts through all gears
Test the brakes from 60 mph — verify straight tracking and no pedal pulse
Drive over rough pavement and listen for suspension clunks or rattles
Verify the iDrive, navigation, heated seats, and sunroof all function
Pull before signing
Request the full BMW dealer service history printout or Carfax report
Verify VIN on the dashboard plate matches the door jamb sticker and title
Confirm title is clean — not salvage, rebuilt, or lemon law buyback
Check active CPO coverage status at bmwusa.com or via 1-800-BMW-USA
Run a same-day recall check at recalls.nhtsa.dot.gov using the full VIN