Ford Fusion Energi (2015) is 494 mm (19.45 inch) longer, 52 mm (2.05 inch) wider, 185 mm (7.28 inch) higher and has 178 liters (6.29 ft3) bigger cargo space than Porsche Cayman (2018).
Porsche Cayman (2018) is 235 kg (518 lbs) lighter than Ford Fusion Energi (2015).