GMC Terrain vs Land Rover Discovery: Specs Compared

Running cost over five years: at the EPA's 15,000-mile-a-year assumption the GMC Terrain burns about $2,200 of fuel annually against $3,450 for the Land Rover Discovery. That $1,250 yearly gap compounds to roughly $6,250 over five years and $10,000 over eight — often more than the price difference between two trims of the same vehicle, and the single largest running-cost line item separating these two.

City and highway economy: the GMC Terrain leads in both cycles — 28 mpg city and 39 mpg highway against 21 and 26 mpg — so its fuel-efficiency advantage holds whether you commute in traffic or cover long highway miles.

Powertrain choice: the GMC Terrain is recorded with 3 distinct engine configurations (SIDI, 1.6, SIDI; FFV), the Land Rover Discovery with 3 (SIDI, SIDI; Mild Hybrid, 3.0). Across 47 recorded GMC Terrain configurations and 34 for the Land Rover Discovery, the wider the engine spread the more the real-world fuel efficiency depends on which version you actually buy, so check the specific model year and drivetrain rather than the headline number.

Drivetrain and class: the GMC Terrain is offered with All-Wheel Drive, Front-Wheel Drive, the Land Rover Discovery with All-Wheel Drive, 4-Wheel Drive. All-wheel drive typically costs one to two mpg combined against the same vehicle in front- or rear-wheel drive, which is worth remembering when the gap between these two is small. The EPA classes them as Small Sport Utility Vehicle 2WD and Standard Sport Utility Vehicle 4WD respectively — the class drives the interior volume, cargo space and passenger space each one is measured against.

Tailpipe emissions: at their cleanest configurations the GMC Terrain emits 316 g/mile of CO2 versus 395 g/mile for the Land Rover Discovery. Emissions track fuel consumption almost exactly, so the cleaner vehicle here is also the cheaper one to fuel.