Mazda 6 (2017) is 128 mm (5.04 inch) longer and 7 mm (0.28 inch) wider than Volkswagen Passat Variant (2015).
Volkswagen Passat Variant (2015) is 27 mm (1.06 inch) higher, 79 kg (174 lbs) lighter and has 170 liters (6.00 ft3) bigger cargo space than Mazda 6 (2017).