BMW 3 Series Gran Turismo (2014) is 181 mm (7.13 inch) longer, 22 mm (0.87 inch) wider, 88 mm (3.46 inch) higher and has 139 liters (4.91 ft3) bigger cargo space than Cadillac ATS (2016).
Cadillac ATS (2016) is 230 kg (507 lbs) lighter than BMW 3 Series Gran Turismo (2014).