Buick Regal (2015) is 399 mm (15.71 inch) longer and 49 mm (1.93 inch) wider than Volkswagen Tiguan (2020).
Volkswagen Tiguan (2020) is 221 mm (8.70 inch) higher, 131 kg (289 lbs) lighter and has 272 liters (9.61 ft3) bigger cargo space than Buick Regal (2015).
