The Volvo EC40 should be practical enough for family use if its cabin layout suits your passengers. Useful size figures include 2025 488km Ultra: 4440 mm; 2025 488km Ultra: 1873 mm; 2025 488km Ultra: 1591 mm; 2025 488km Ultra: 2702 mm; 2025 488km Ultra: 5. 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.