Mercedes SLK-Class (2017) is 13 mm (0.51 inch) wider than Peugeot 308 (2017).
Peugeot 308 (2017) is 119 mm (4.69 inch) longer, 154 mm (6.06 inch) higher, 135 kg (298 lbs) lighter and has 135 liters (4.77 ft3) bigger cargo space than Mercedes SLK-Class (2017).