407
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Which Peugeot 407 engine is the most reliable? See common problems, reviews and reliability verdicts across generations and engines.
Frequently asked questions
Which Peugeot 407 engine is the most reliable?
2.0 16V (EW10, petrol) — Maint. Sensitive verdict. The PSA EW10 2.0 — a genuinely tough, long-lived engine that PSA rated for 300,000+ km and that frequently reaches 350,000–400,000 km on nothing more than regular oil and timing-belt changes. The most durable petrol in the C4. It's belt-driven and interference, so the belt schedule is critical, and the day-to-day niggles are minor: the coil packs aren't its strong point (misfire/rough running), it can weep oil from the cam/crank seals with age and use a little, and worn engine mounts cause vibration. Thirstier and less common, but as close to bulletproof as a 2.0 petrol gets.
Which Peugeot 407 engines should you avoid?
Engines with the weakest reliability verdicts: 1.6 TDCi (DV6), 2.7 HDi V6 (DT17).
What are the most common Peugeot 407 problems?
The most commonly reported problems across all Peugeot 407 generations and engines: DPF clogging, Injector seal → turbo oil starvation, Turbo failure, Turbo oil starvation (narrow feed), DPF system faults.