The BMW i5 should be practical enough for family use if its cabin layout suits your passengers. Useful size figures include 2025 M60 xDrive M High Performance: 5060 mm; 2025 eDrive40 M Sport Pro: 5060 mm; 2025 M60 xDrive M High Performance: 1900 mm; 2025 eDrive40 M Sport Pro: 1900 mm; 2025 M60 xDrive M High Performance: 1505 mm; 5 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.