BMW 4 Series (2013) is 8 mm (0.31 inch) longer and 40 mm (1.57 inch) wider than Nissan X-Trail (2014).
Nissan X-Trail (2014) is 408 mm (16.06 inch) higher, 85 kg (187 lbs) lighter and has 120 liters (4.24 ft3) bigger cargo space than BMW 4 Series (2013).