The BMW X1 (F48) marks a historic break for the Bavarian brand: it abandons rear-wheel drive in favor of the UKL2 front-wheel drive platform (shared with MINI and the 2 Series Active Tourer). This change in architecture allowed for maximizing interior space and trunk volume, transforming the X1 into a very pragmatic family SUV. Mechanically, it introduced the 'B' family of modular engines (B38, B48 for gasoline; B37, B47 for diesel), which proved to be significantly more reliable than the previous generation (N20/N47). A facelift (LCI) occurred in mid-2019, bringing aesthetic touches, an infotainment update, and the introduction of the DKG7 dual-clutch gearbox on some gasoline versions. Overall, the F48 is a mature and very reliable vehicle, especially with gasoline engines.
The BMW X1 F48 is one of the most recommendable premium compact SUVs on the used car market, provided you choose the right engine. By abandoning the old N20/N47 engines for the modular 'B' generation, BMW drastically improved the reliability of its entry-level models. Gasoline versions (18i and especially 20i/25i/28i) are exceptionally robust and represent the best choice. The 2.0L 4-cylinder (B48) offers the perfect compromise between driving pleasure, performance, and reliability. Diesel versions should be avoided for low-mileage drivers due to chronic EGR cooler issues. A well-maintained gasoline model (with Aisin gearbox oil change performed) will take you very far without major problems.