2023 Land Rover Discovery Dimensions. To get a sense of just how spacious the 2023 Land Rover Discovery interior is, check out some of the 2023 Land Rover Discovery dimensions here: Legroom (1st/2nd/3rd): 39.1 inches/37.4 inches/33.5 inches. Shoulder Room (1st/2nd): 60.4 inches/59.5 inches. Detailed specs and features for the Used 2019 Land Rover Discovery including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more. The Discovery has 45 cubic feet of space with the rear seats up and 82.7 cubic feet with them folded. A hands-free power liftgate is standard, and a powered inner tailgate that can be used as a seating or loading platform is optional. Intelligent Seat Fold is also available. hOZV0.