The second-generation MINI (code name R56) had the difficult task of succeeding the R50, which had brilliantly relaunched the brand under BMW's aegis. Aesthetically similar to its predecessor, the R56 is nevertheless a 100% new car. It stands out for the introduction of the "Prince" engine family, developed jointly by BMW and PSA Peugeot Citroën. While the road handling remains exceptional (the famous "go-kart" effect), the improved finish quality, and undeniable charm, the reliability of the gasoline engines (especially before the 2010 facelift) was catastrophic. Problems with the timing chain, oil consumption, and high-pressure pump ruined the model's reputation. The late 2010 facelift (LCI) brought new engines (N16/N18) that corrected some of the flaws, without making the car irreproach
Buying a MINI R56 is a perilous exercise. If you are looking for a gasoline engine, avoid at all costs models produced between 2006 and late 2010 (N12 engines and especially N14 on the Cooper S), unless the engine has been completely rebuilt (timing chain, HP pump, turbo) with supporting invoices. It is imperative to prioritize facelifted (LCI) versions from 2011 onwards equipped with N16 (Cooper) or N18 (Cooper S) engines. Even on these more reliable versions, rigorous monitoring (annual oil changes, monthly oil level checks) is mandatory. For diesels, both PSA and BMW blocks have their own costly flaws (turbo/injectors for one, chain for the other); only consider them for high-mileage drivers with a perfect service history.