BMW 3 Series Touring (2015) is 135 mm (5.31 inch) longer, 24 mm (0.94 inch) wider, 112 kg (247 lbs) lighter and has 195 liters (6.89 ft3) bigger cargo space than Opel Ampera (2020).
Opel Ampera (2020) is 10 mm (0.39 inch) higher than BMW 3 Series Touring (2015).