Among three-row crossovers, the 2018 Acura MDX is mostly on-par with its class, according to the EPA. Most versions of the MDX will manage around 22 mpg combined, which is good enough for a 6 out of 10 on our fuel-economy scale. (Read more about how we rate cars.)
By the book, front-drive versions of the MDX are rated at 19 mpg city, 27 highway, 22 combined. Opting for the Advance package raises those numbers slightly thanks to its stop/start system that cuts off the engine when the car is stationary for a short time: 19/27/22 mpg.
Adding all-wheel drive drops the rating to 18/26/21 mpg, or 19/26/22 mpg with the Advance package.
Predictably, the Acura MDX Sport Hybrid is the efficiency champ of the bunch, even with standard all-wheel drive. The EPA scores it at 26/27/27 mpg.
Other three-row crossovers such as the Volvo XC90 and Infiniti QX60 manage roughly 22 combined in normal guise. The Land Rover Discovery can do the same when equipped with its turbodiesel.