Audi A4 (2015) is 304 kg (670 lbs) lighter than BMW 5 Series Gran Turismo (2018).
BMW 5 Series Gran Turismo (2018) is 217 mm (8.54 inch) longer, 25 mm (0.98 inch) wider, 41 mm (1.61 inch) higher and has 50 liters (1.77 ft3) bigger cargo space than Audi A4 (2015).