BMW X6 M F86
Weaknesses, engine ratings and buying advice
560–575 PS
4.4L V8 Biturbo Benzin
M Coupé-SUV — 555 hp, even less sense, even more fun
Fun to Drive!Generations
Engine Overview
The BMW X6 M F86 is available with one engine variant at 197 hp.
The BMW 4.4L V8 Biturbo (Benziner, 575 PS) has the S63B44 (4.4L V8 Biturbo) — rated: "Be Careful", 6 known weaknesses.
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| S63TU Timing Chain Rattling and Guide Rails The S63TU engine in the F86 X6 M retains the known timing chain issues of its predecessor. Guide rails can break and clog the oil pump, followed by chain failure. Cold-start rattling is the early warning sign. Symptoms: Metallic rattling on cold start, clattering when oil top-up is needed, oil pressure warning from 120,000 km | High | |
| Con Rod Bearing Wear — S63TU The S63TU in the F86 suffers from con rod bearing wear with excessively long oil change intervals. Early oil analysis helps detect metal debris. Symptoms: Metallic knocking from the engine on cold start or under load, oil pressure drop from 80,000 km | High | |
| Elevated Oil Consumption from Valve Stem Seals The S63TU is prone to elevated oil consumption from porous valve stem seals, accelerated by the hot-V turbos. BMW considered up to 1 litre per 1,000 km as normal. Symptoms: Frequent engine oil top-ups needed, blue smoke on cold start or when lifting off throttle from 80,000 km | High |
Top Reported Issues
Alternatives
Land Rover Discovery L462
Großer SUV (2017–2026)
Audi SQ7 4M
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Audi Q7 4M
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Nissan Navara D23
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Volvo XC90 II
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Land Rover Range Rover Sport L494
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Known Problems and Issues
A total of 40 weaknesses have been documented for the BMW X6 M F86 (2014–2019) — 34 engine-related and 6 vehicle-related. Typical issues affect Other, Brakes, Suspension, Gearbox.
X6 M (S63B44, 2014–2019) — Be Careful: Connecting rod bearing wear, Recall: oil pump drive shaft, Turbo coolant lines brittle. Power: 575 PS.
What to watch out for with the BMW X6 M? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the BMW X6 M F86 have? +
What should I look for when buying a used BMW X6 M F86? +
Which engine is recommended? +
Which BMW X6 M F86 engine is the most fun? +
Is the BMW X6 M F86 worth buying used? +
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Last updated: February 2026 · All information without guarantee