The third-generation MINI (F56 for the 3-door, F55 for the 5-door) marks a major turning point in the brand's history. Based on BMW's modular UKL1 platform, it abandons the notorious 'Prince' engines (developed with PSA) in favor of BMW's modular B-series blocks (B38 3-cylinder, B48 4-cylinder). This change transformed the model's reliability, elevating the MINI from a 'problem car' to one of the most reliable premium city cars on the market. It underwent two facelifts (LCI in 2018 with the arrival of 'Union Jack' lights and DKG dual-clutch gearboxes, then LCI 2 in 2021 with a streamlined front end). Although the focus is on petrol, the range included diesel until 2019 and introduced a 100% electric version (Cooper SE) in 2020.
The MINI F55/F56 is an excellent used car purchase. The adoption of BMW engines has definitively erased the reliability nightmares of the previous generation (THP/Prince engines). The B38 and B48 petrol engines are among the most reliable in their category. For a worry-free purchase, opt for a post-2015 petrol model (to avoid the crankshaft issue of early manual models). The only recurring weak point is the upper engine mount, a low-cost repair if anticipated. The Cooper (136 hp) represents the best compromise, while the Cooper S (192 hp) will delight sports enthusiasts with impeccable reliability.