18.6 barrels/yr. 566 grams/mile. 443 miles. Total Range. Page 1. Fuel economy of the 2015 Land Rover Range Rover Sport. 1984 to present Buyer's Guide to Fuel Efficient Cars and Trucks. Estimates of gas mileage, greenhouse gas emissions, safety ratings, and air pollution ratings for new and used cars and trucks. 2017 Land Rover Discovery. Highs Handsome and rugged styling, legitimate off-road capability, posh cabin. Lows Clumsy on-road handling, fuel-hungry gasoline engine, limited cargo room behind the For more information about the Discovery's fuel economy, visit the EPA's website. 2021 Land Rover Discovery P360 R-Dynamic S View 2023 Land Rover Discovery Sport Details. cle2.