The first-generation BMW X4 (code F26) was launched in 2014 as the X6's smaller sibling. Based on the platform and underpinnings of the facelifted X3 (F25), it inaugurated the compact SAC (Sports Activity Coupe) segment. It stands out with a sloping roofline, a lowered center of gravity, and firmer suspension settings than the X3 for more dynamic handling. While it sacrifices some rear passenger space and trunk volume for style, it retains the brand's excellent build quality and advanced powertrains. In the used car market, diesel versions (which represent the majority of sales in Europe) are highly sought after for their performance/consumption compromise, but require rigorous monitoring, particularly concerning the xDrive system and emissions control.
The BMW X4 F26 is a highly desirable SUV Coupé that ages well aesthetically and dynamically. For diesel engines, the 30d (6-cylinder) is the top choice: it offers superior mechanical reliability to the 4-cylinder while delivering high-level driving pleasure. The 20d (B47) remains an excellent rational choice, provided the EGR valve recall has been scrupulously performed. However, buying a used X4 requires absolute vigilance regarding the xDrive system: avoid models equipped with mismatched tires or without BMW marking, as the transfer case will not forgive it. A vehicle with a clear history and a serviced automatic gearbox is a recommendable purchase.