BMW 8 Series (G14) (2018) is 345 mm (13.58 inch) longer, 114 mm (4.49 inch) wider and has 50 liters (1.77 ft3) bigger cargo space than Chevrolet Volt (2020).
Chevrolet Volt (2020) is 99 mm (3.90 inch) higher and 202 kg (445 lbs) lighter than BMW 8 Series (G14) (2018).