Audi R8 Spyder (2020) is 90 kg (198 lbs) lighter than Cadillac XT4 (2019).
Cadillac XT4 (2019) is 173 mm (6.81 inch) longer, 4 mm (0.16 inch) wider, 387 mm (15.24 inch) higher and has 411 liters (14.51 ft3) bigger cargo space than Audi R8 Spyder (2020).