Buick Regal (2014) is 857 kg (1,889 lbs) lighter than Toyota Tundra (2016).
Toyota Tundra (2016) is 983 mm (38.70 inch) longer, 172 mm (6.77 inch) wider, 442 mm (17.40 inch) higher and has 1014 liters (35.81 ft3) bigger cargo space than Buick Regal (2014).