1 Series F20
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Which Bmw 1 Series F20 engine is the most reliable? See common problems, reviews and reliability verdicts across generations and engines.
Frequently asked questions
Which Bmw 1 Series F20 engine is the most reliable?
118i 1.5 Turbo (B38) — Reliable verdict. The 136 hp B38 three-cylinder (F20 118i 2015–2019) replaced the troubled N13 and is a clear improvement: robust front timing chain, no known design flaw. The recurring complaints are coolant leaks (including at the turbo coolant lines), three-cylinder vibration that wears the engine mounts, and direct-injection carbon over time. A sensible, cheap-to-run choice.
Which Bmw 1 Series F20 engines should you avoid?
Engines with the weakest reliability verdicts: 116i 1.6 Turbo (N13), 118i 1.6 Turbo (N13), 18d / 20d / 23d (N47 diesel).
What are the most common Bmw 1 Series F20 problems?
The most commonly reported problems across all Bmw 1 Series F20 generations and engines: EGR cooler — 2018 recall, Timing chain at the gearbox end, DPF, swirl-flap actuator and injectors, Timing chain stretch and tensioner, Carbon build-up and oil consumption.