BMW 1 Series (2015) is 357 mm (14.06 inch) longer, 83 mm (3.27 inch) wider and has 60 liters (2.12 ft3) bigger cargo space than Volkswagen Polo (2017).
Volkswagen Polo (2017) is 32 mm (1.26 inch) higher and 240 kg (529 lbs) lighter than BMW 1 Series (2015).