BMW 1 Series (2015) is 279 mm (10.98 inch) longer, 45 mm (1.77 inch) wider and has 72 liters (2.54 ft3) bigger cargo space than Kia Rio (Hatchback) (2017).
Kia Rio (Hatchback) (2017) is 34 mm (1.34 inch) higher and 267 kg (589 lbs) lighter than BMW 1 Series (2015).