Audi R8 Spyder (2020) is 104 mm (4.09 inch) wider and 197 kg (434 lbs) lighter than Buick Envision (2018).
Buick Envision (2018) is 240 mm (9.45 inch) longer, 457 mm (17.99 inch) higher and has 536 liters (18.93 ft3) bigger cargo space than Audi R8 Spyder (2020).