M Buyers Guide

Inspection checklist

M440i G23 facelift, 2025 to 2027

Printed October 29, 2026. Tick each item at the viewing, and write down what you find.

Before you go

Open recalls. Run the VIN through NHTSA or a BMW dealer and ask for proof every recall was done.
History report. Check the title, accidents, owners and mileage record.
Service records. Ask for them in advance, ideally from a BMW dealer or specialist.
Certified or not. BMW can still certify 2025 to 2027 cars. If this one is certified, ask for the paperwork showing when its cover ends.
Independent inspection. Book a pre-purchase inspection with a shop that knows this engine.

Known problems on this car

Coolant loss / expansion tank about $900 to fix
Inspect the expansion tank seams, ask owner about coolant top-ups.
PCV diaphragm wear
Pre-purchase scan for PCV and misfire codes, check idle quality.
Oil filter housing and valve cover gasket leaks about $1,500 to fix
Look for oil or coolant residue at the oil filter housing and the valve cover, and ask about coolant top-ups.
High pressure fuel pump about $1,100 to fix
Ask about tune history and fueling upgrades, listen for HPFP whine at idle.

At the viewing

All G22 LCI checks plus the convertible top mechanism, drains, and trunk seal. Verify the top cycles fully. Latest iDrive firmware. Check by VIN that recalls are done.

Notes

From the M440i G23 facelift guide at M Buyers Guide. Repair costs are the guide's estimates, not quotes; the guide says where each comes from. Problems and costs as of the date printed.