BMW 1 Series (2015) is 29 mm (1.14 inch) longer than Hyundai Elantra GT (2016).
Hyundai Elantra GT (2016) is 16 mm (0.63 inch) wider, 50 mm (1.97 inch) higher, 87 kg (192 lbs) lighter and has 48 liters (1.70 ft3) bigger cargo space than BMW 1 Series (2015).