Audi A4 Allroad (2015) is 22 mm (0.87 inch) longer, 112 mm (4.41 inch) higher and has 45 liters (1.59 ft3) bigger cargo space than BMW 4 Series (2015).
BMW 4 Series (2015) is 29 mm (1.14 inch) wider and 105 kg (231 lbs) lighter than Audi A4 Allroad (2015).