Audi R8 Spyder (2020) is 91 mm (3.58 inch) wider and 162 kg (357 lbs) lighter than Cadillac XTS (2015).
Cadillac XTS (2015) is 706 mm (27.80 inch) longer, 261 mm (10.28 inch) higher and has 283 liters (9.99 ft3) bigger cargo space than Audi R8 Spyder (2020).