Jaguar XJ-Series (2014) is 444 mm (17.48 inch) longer and 18 mm (0.71 inch) higher than Mercedes C-Class (2015).
Mercedes C-Class (2015) is 88 mm (3.46 inch) wider, 439 kg (968 lbs) lighter and has 50 liters (1.77 ft3) bigger cargo space than Jaguar XJ-Series (2014).