X5
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Which Bmw X5 engine is the most reliable? See common problems, reviews and reliability verdicts across generations and engines.
Frequently asked questions
Which Bmw X5 engine is the most reliable?
xDrive30d (M57 / N57) — Maint. Sensitive verdict. The 30d straight-six diesel is the X5 to buy — strong, smooth and well-matched to the weight, with the early M57 and later N57 both being robust, high-mileage units that avoid the four-cylinder N47's timing-chain horror. Watch the EGR cooler (known BMW diesel leak/clog), swirl flaps on the M57, DPF on short trips, and high-mileage turbo/injection. A documented six is one of the more dependable big diesels you can buy.
Which Bmw X5 engines should you avoid?
None of the Bmw X5 engines listed are rated "Problematic" or "Avoid" — but always check the service history before buying.
What are the most common Bmw X5 problems?
The most commonly reported problems across all Bmw X5 generations and engines: Valve-stem seals (blue smoke), Coolant transfer pipe / timing guides, EGR cooler, Swirl flaps (M57), DPF / turbo (high miles).