Hyundai i40 (2015) is 641 mm (25.24 inch) longer, 167 mm (6.57 inch) higher and has 170 liters (6.00 ft3) bigger cargo space than Mercedes SLK-Class (2020).
Mercedes SLK-Class (2020) is 2 mm (0.08 inch) wider and 237 kg (522 lbs) lighter than Hyundai i40 (2015).