BMW 5 Series Gran Turismo (2015) is 340 mm (13.39 inch) longer, 89 mm (3.50 inch) wider, 129 mm (5.08 inch) higher and has 109 liters (3.85 ft3) bigger cargo space than Lexus IS (2018).
Lexus IS (2018) is 475 kg (1,047 lbs) lighter than BMW 5 Series Gran Turismo (2015).