BMW 1 Series (2015) is 302 kg (666 lbs) lighter than Buick Regal TourX (2018).
Buick Regal TourX (2018) is 657 mm (25.87 inch) longer, 97 mm (3.82 inch) wider, 62 mm (2.44 inch) higher and has 240 liters (8.48 ft3) bigger cargo space than BMW 1 Series (2015).