Nissan Sentra (2018) is 15 mm (0.59 inch) wider, 82 mm (3.23 inch) higher, 71 kg (157 lbs) lighter and has 12 liters (0.42 ft3) bigger cargo space than Subaru Legacy (2016).
Subaru Legacy (2016) is 375 mm (14.76 inch) longer than Nissan Sentra (2018).
