BMW i3 (2014) is 123 mm (4.84 inch) higher and 497 kg (1,096 lbs) lighter than Buick Regal Sportback (2018).
Buick Regal Sportback (2018) is 901 mm (35.47 inch) longer, 87 mm (3.43 inch) wider and has 210 liters (7.42 ft3) bigger cargo space than BMW i3 (2014).