The Opel Astra H (third generation) marks a major stylistic and technological break compared to the very conservative Astra G. Based on General Motors' Delta platform, it offers dynamic road handling, a significantly improved finish quality, and an ambitious technological endowment for its time (IDS+ controlled suspension, AFL directional bi-xenon headlights). Although this report focuses on petrol engines, the Astra H was a global success, sold under multiple badges (Vauxhall, Holden, Saturn, Chevrolet). While its corrosion resistance is excellent, its mechanical and electronic reliability is mixed, requiring a rigorous engine choice.
The Opel Astra H is a robust and safe compact car, but it is not without chronic flaws. On the used market, petrol engines are largely preferable to diesels, the latter suffering from costly breakdowns (DPF, EGR, alternator, dual-mass flywheel). The most sensible choice is the 1.8 VVT of 140 hp (or the 1.6 VVT of 115 hp), coupled with the 5-speed manual gearbox (F17), which avoids the disastrous 6-speed M32 gearbox. Purchase is recommended provided you absolutely check the operation of the CIM module (horn/headlights) and the absence of leaks at the oil cooler on VVT engines.