BMW 7 Series (2015) is 478 mm (18.82 inch) longer, 101 mm (3.98 inch) wider, 48 mm (1.89 inch) higher and has 107 liters (3.78 ft3) bigger cargo space than Hyundai Elantra (2016).
Hyundai Elantra (2016) is 504 kg (1,111 lbs) lighter than BMW 7 Series (2015).
