Audi Q7 (2017) is 419 mm (16.50 inch) longer, 158 mm (6.22 inch) wider, 311 mm (12.24 inch) higher and has 515 liters (18.19 ft3) bigger cargo space than BMW 3 Series Touring (2015).
BMW 3 Series Touring (2015) is 515 kg (1,135 lbs) lighter than Audi Q7 (2017).