BMW 4 Series (2020) is 318 mm (12.52 inch) longer and 71 mm (2.80 inch) wider than Subaru Crosstrek (2017).
Subaru Crosstrek (2017) is 232 mm (9.13 inch) higher, 160 kg (353 lbs) lighter and has 191 liters (6.75 ft3) bigger cargo space than BMW 4 Series (2020).