Audi A3 (Sedan) (2017) is 11 mm (0.43 inch) wider and 240 kg (529 lbs) lighter than Nissan X-Trail (2014).
Nissan X-Trail (2014) is 172 mm (6.77 inch) longer, 354 mm (13.94 inch) higher and has 140 liters (4.94 ft3) bigger cargo space than Audi A3 (Sedan) (2017).