159
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Which Alfa Romeo 159 engine is the most reliable? See common problems, reviews and reliability verdicts across generations and engines.
Frequently asked questions
Which Alfa Romeo 159 engine is the most reliable?
1.9 JTDm 16v (diesel) — Maint. Sensitive verdict. The 1.9 JTDm (Fiat Multijet) — the sensible 159 engine, economical and reasonably tough. The key discipline is the timing belt + water pump: the belt can stretch/slip and the water pump fails if maintenance is skipped, leading to engine damage. Plus the usual DMF and DPF. Solid with strict belt service.
Which Alfa Romeo 159 engines should you avoid?
Engines with the weakest reliability verdicts: 1.9 JTS (petrol), 2.2 JTS (petrol, GM Z22SE-based).
What are the most common Alfa Romeo 159 problems?
The most commonly reported problems across all Alfa Romeo 159 generations and engines: Timing belt + water pump, Carbon build-up (DI), Timing chain wear, Timing chain failure (clogged 1mm oil nozzle), DMF / DPF.