Insignia A
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Which Opel Insignia A engine is the most reliable? See common problems, reviews and reliability verdicts across generations and engines.
Frequently asked questions
Which Opel Insignia A engine is the most reliable?
2.0 CDTI (A20DTH / A20DT) — Maint. Sensitive verdict. The 2.0 CDTI is the volume Insignia engine and the sensible high-mileage choice — torquey, economical and well-matched to the big car. It's a chain-driven GM diesel; the watch items are timing-chain wear (rattle), the swirl-flap/intake and EGR sooting, DPF clogging on short trips, and injector wear, with some cars known for oil-pump or balance-related noise on neglect. With disciplined oil and motorway use it covers big distances; buy on a documented service record.
Which Opel Insignia A engines should you avoid?
None of the Opel Insignia A engines listed are rated "Problematic" or "Avoid" — but always check the service history before buying.
What are the most common Opel Insignia A problems?
The most commonly reported problems across all Opel Insignia A generations and engines: Timing chain wear, DPF / EGR / swirl, Injector wear, Timing chain / cam phaser, Turbo / PCV / carbon.