The second-generation Citroën C4 (internal code B7) marked a significant departure from its quirky predecessor. Citroën opted for a more conservative, Germanic design to compete directly with the Volkswagen Golf. Built on the PSA PF2 platform, it prioritized ride comfort, acoustic insulation, and a class-leading boot capacity (408 liters). While it excels as a comfortable cruiser, its reliability record is highly polarized. The diesel engines (particularly the older HDi and 2.0 HDi) are generally robust workhorses, but the petrol lineup (VTi, THP, and later PureTech) is plagued by severe, well-documented design flaws that can lead to catastrophic engine failure. Furthermore, the introduction of BlueHDi diesels brought widespread and expensive AdBlue system failures.
The Citroën C4 II is a comfortable, spacious, and affordable family hatchback, but buying one is a veritable minefield. As an independent expert, I strongly advise avoiding ALL petrol variants. The VTi and THP engines are notorious for timing chain and oil consumption issues, while the 1.2 PureTech is fundamentally flawed due to its degrading wet timing belt. The 1.6 BlueHDi is also a financial risk due to guaranteed AdBlue tank failures. The only safe buys are the older 1.6 HDi / e-HDi (8-valve) or the excellent 2.0 HDi 150, paired with a manual gearbox or the post-2015 EAT6 automatic. If you find a well-maintained 2.0 HDi, it is a fantastic, comfortable cruiser. Otherwise, look elsewhere.