Audi TT RS (2018) is 43 kg (95 lbs) lighter than Volkswagen Passat (2014).
Volkswagen Passat (2014) is 675 mm (26.57 inch) longer, 2 mm (0.08 inch) wider, 131 mm (5.16 inch) higher and has 170 liters (6.00 ft3) bigger cargo space than Audi TT RS (2018).