Checklist: G22 BMW 4 Series (2021–2026)

Look for 6

Known problems, and how to check for each.

Thermostat and coolant pump on the 430i All yearsWatch the temperature gauge on a long drive for overheating warnings or a wandering needle, and ask whether the thermostat or auxiliary coolant pump has been replaced. A seller's guide (unofficial)
Oil filter housing seep on the M440i All yearsLook for oil around the oil filter housing. A seller's guide (unofficial)
Electric water pump on the M440i All yearsAsk whether the electric water pump has been replaced on a car near 80,000 miles, and look for a coolant warning. A seller's guide (unofficial)
The mild hybrid's starter-generator All yearsAsk for proof that every starter-generator and starter recall has been done, and scan for stored fault codes. NHTSA, a seller's guide (unofficial)
Worn front control arm bushings All yearsOn the test drive, feel for the car following ruts in the road or vague steering. A seller's guide (unofficial)
Early iDrive 7 glitches All yearsTry the screen, Bluetooth, reversing camera and parking sensors, and ask whether the software is up to date. A seller's guide (unofficial)

Services to ask about 1

Scheduled work a seller can show records for. The G22's schedule has 3 more services, on its page. Buying shows which are due at a car's miles and age.

Engine oil and filter All yearsReplace every 7,500 miles, per a parts seller. Euro Premium Parts says every 7,500 miles in normal use, sooner on cars driven hard. Ask for oil change records. A seller's guide (unofficial)

Recalls to ask about 13

Recalls filed for these model years, newest first. Not every car is covered; check the vehicle identification number with NHTSA.

Checklist: G22 BMW 4 Series 2021–2026

Look for 6

Services to ask about 1

Recalls to ask about 13