The Lexus GX should be practical enough for family use if its cabin layout suits your passengers. Useful size figures include 2025 550 Luxury +: 5015 mm; 2025 550 Overtrail: 5015 mm; 2025 550 Luxury +: 1980 mm; 2025 550 Overtrail: 2000 mm; 2025 550 Luxury +: 1865 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.