The Porsche Panamera PHEV should be practical enough for family use if its cabin layout suits your passengers. Useful size figures include 2026 Panamera 4 Executive 2.9T: 5202 mm; 2026 Panamera 4S 2.9T: 5052 mm; 2026 Panamera 4 2.9T: 5052 mm; 2026 Panamera 4 Executive 2.9T: 1937 mm; 2026 Panamera Turbo 4.0T: 1937 mm; 18 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.