X3 G45
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Which Bmw X3 G45 engine is the most reliable? See common problems, reviews and reliability verdicts across generations and engines.
Frequently asked questions
Which Bmw X3 G45 engine is the most reliable?
216d / 218d / 220d (B37 / B47 diesel) — Maint. Sensitive verdict. The diesels are the high-mileage G20 choice — the 2.0 B47 (320d, often mild-hybrid — the robust engine that long ago replaced the chain-troubled N47) and the superb 3.0 straight-six B57 (330d). Both are strong, exceptionally economical and well-matched to the executive saloon/estate. Standard modern-diesel cautions: DPF and EGR on short trips (EGR cooler a known weak point), injector attention, twin-dosing AdBlue/SCR, and timing-chain checks at very high miles. The 330d straight-six is one of the best long-distance engines you can buy. A motorway-driven, serviced car is a genuine 300k long-hauler. Buy on EGR, DPF and AdBlue history.
Which Bmw X3 G45 engines should you avoid?
None of the Bmw X3 G45 engines listed are rated "Problematic" or "Avoid" — but always check the service history before buying.
What are the most common Bmw X3 G45 problems?
The most commonly reported problems across all Bmw X3 G45 generations and engines: N47 timing-chain failure (rear, pre-~2015), N47 rear timing chain (early), EGR cooler / DPF, Timing chain / injector (high miles), EGR cooler / DPF / AdBlue.