Audi R8 Spyder (2020) is 16 mm (0.63 inch) longer and 109 mm (4.29 inch) wider than Mercedes GLA-Class (2020).
Mercedes GLA-Class (2020) is 371 mm (14.61 inch) higher, 92 kg (203 lbs) lighter and has 209 liters (7.38 ft3) bigger cargo space than Audi R8 Spyder (2020).