The Porsche Cayenne Electric should be practical enough for family use if its cabin layout suits your passengers. Useful size figures include 2026 PHEV Cayenne S Coupé 3.0T: 4930 mm; 2026 PHEV Cayenne Coupé 3.0T: 4930 mm; 2026 BEV Cayenne Turbo Coupé: 4985 mm; 2026 BEV Cayenne S Coupé: 4991 mm; 2026 BEV Cayenne Coupé: 4985 mm; 71 more variants. Wheelbase and seating matter most day to day because they influence rear-seat comfort, child-seat friendliness and how relaxed the car feels on longer trips.