BMW X1 (2017) is 22 mm (0.87 inch) longer, 86 mm (3.39 inch) wider, 82 mm (3.23 inch) higher and has 83 liters (2.93 ft3) bigger cargo space than Chevrolet Sonic (Sedan) (2018).
Chevrolet Sonic (Sedan) (2018) is 174 kg (384 lbs) lighter than BMW X1 (2017).