BMW 5 Series Touring (2016) is 165 mm (6.50 inch) longer, 43 mm (1.69 inch) wider, 74 mm (2.91 inch) higher and has 158 liters (5.58 ft3) bigger cargo space than Buick Regal (2015).
Buick Regal (2015) is 340 kg (750 lbs) lighter than BMW 5 Series Touring (2016).