Which used BMW X4 estate should I buy?
While Sport trim provides all the equipment most people will need, it would seem that most used X4s can be found in pricier M Sport guise. That does at least mean you get a bigger infotainment screen and a digital instrument cluster. M Sport X is only worth it if you really like grey body cladding and the prospect of a panoramic glass roof.
Unless you really enjoy paying for petrol, it’s the 20d diesel that makes the most sense for this model's blend of performance and economy.