The Lexus LS should be practical enough for family use if its cabin layout suits your passengers. Useful size figures include 2021 500 Executive Kiriko: 5235 mm; 2021 500 Luxury: 5235 mm; 2021 500 Executive Kiriko: 1900 mm; 2021 500 Luxury: 1900 mm; 2021 500 Executive Kiriko: 1450 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.