BMW 6 Series Gran Turismo (2018) is 592 mm (23.31 inch) longer, 114 mm (4.49 inch) wider, 101 mm (3.98 inch) higher and has 309 liters (10.91 ft3) bigger cargo space than Chevrolet Volt (2014).
Chevrolet Volt (2014) is 74 kg (163 lbs) lighter than BMW 6 Series Gran Turismo (2018).