KNOWN FAULTS · BMW

Known faults for the BMW M2 (F87).

2016–2021 · Petrol

Sources are not verified in real time and no entry confirms that your car is affected.

2 known faults with sources

Engines: M2 (N55, 3.0) (Petrol)

BMW petrol electric water pump, leaks and VANOSCooling / leaks / VANOS

Engine / equipment: BMW petrol engines with an electric water pump: N52, N53, N54, N55, N20 and others from 2004–2016
Period mentioned: 2004–2016
Symptoms: Temperature warning and limited power with no prior warning (water pump); burning oil smell or smoke from leaks onto the exhaust or belt; rough idle and VANOS codes (2A82, 2A87).
Possible cause described: The water pump is electric and its electronics fail, often without warning, between 95,000 and 160,000 km. The valve cover and oil filter housing gaskets harden and leak; the latter can drip onto the belt. The VANOS solenoids get dirty and fail.
Check for the garage: Check the water pump and thermostat history, look for leaks at the valve cover and oil filter housing, and read VANOS codes.
Cost cited in the source: Water pump: approx. €550–1,100 fitted; oil filter housing gasket: €275–550; valve cover: €370–740 (converted from dollars)A rough figure from the original database, not an up-to-date quote.

Mileage cited in the database: 95,000–160,000 km. This is not a maintenance interval and does not predict a failure.

Engines: M2 Competition / CS (S55, 3.0) (Petrol)

S55 crank hubTiming system

Engine / equipment: S55 3.0 twin-turbo (M3 F80, M4 F82/F83, M2 Competition and CS F87)
Period mentioned: 2014–2021
Symptoms: Engine or drivetrain warning, rough running, or the engine cranks but won't start because the ECU blocks it after detecting timing deviation.
Possible cause described: The crank hub that drives the chain is held only by friction from one bolt, with no key. Under high load (aggressive high-rev downshifts or extra power from tuning) it can slip and throw the timing out, risking valve-to-piston contact. It is more common on modified cars.
Check for the garage: Read camshaft deviation with a diagnostic tool and check whether the hub has moved. The permanent fix is a pinned or keyed hub.
Cost cited in the source: Pinned hub: approx. €900–1,000 plus labour; repair after a slip: approx. €750–2,300 (converted from dollars)A rough figure from the original database, not an up-to-date quote.