GMC MPG by Model

By , Gas Mileage Calculators

See GMC MPG for all 6 current models, with links to each one's year-by-year EPA ratings.

Current models
6
Rated 2024 or later
Best 2026 GMC for MPG
27 MPG
Terrain FWD
Most efficient 2026 GMC EV
68 MPGe
SIERRA EV Ext Range (11kW Charger)

GMC Models and Their EPA Ratings

The EPA has rated 2,900 GMC vehicles since 1984, and these are the models with ratings from 2024 or later. Each one links to its full page with every engine, drivetrain and model year, plus MPGe and range for electric versions. The latest-year column shows the spread from the least to the most efficient version that year. 19 older GMC models whose last EPA rating is from 2023 or earlier aren't listed yet.

Current GMC models, A to Z
ModelRated yearsPowertrainsLatest year, combinedBest ever
Acadia2007-2027Gas2026: 21-22 MPG25 MPG
Canyon2004-2026GasDiesel2026: 16-20 MPG25 MPG
Hummer EV2024-2025Electric2025: 47-53 MPGe53 MPGe
Sierra1989-2026GasHybridElectricDieselNatural gas2026: 15-25 MPG / 64-68 MPGe26 MPG
Terrain2010-2027GasDiesel2026: 25-27 MPG32 MPG
Yukon1992-2027GasHybridDiesel2026: 16-23 MPG23 MPG

GMC MPG Questions

Which GMC gets the best gas mileage?

Among 2026 models, the Terrain FWD has the best EPA rating at 27 MPG combined (26 city, 28 highway).

Which electric GMC is the most efficient?

Among 2026 models, the SIERRA EV Ext Range (11kW Charger) has the best EPA rating at 68 MPGe combined, or 49.5 kWh per 100 miles.

Which 2026 GMC EV goes the farthest on a charge?

The SIERRA EV Ext Range (11kW Charger) has the longest EPA range of the 2026 GMC electric lineup at 410 miles.

Keep Going

Calculate your own MPGWork out your real gas mileage from a fill-up and see how it compares. Compare two vehiclesSee the yearly fuel cost gap between a GMC and another vehicle. All makesBrowse EPA ratings for every other make.

Where These Numbers Come From

This GMC page was put together by Cedrick Reese from the EPA fuel economy file published on fueleconomy.gov. The model list and every rating on it are generated from that file, so nothing is typed in by hand. Each model page shows the individual EPA records behind these numbers, with a link to each one. When the EPA posts an updated file, this page and the GMC model pages are rebuilt from it.

Ratings on this page come from the EPA file downloaded on October 1, 2026.

Sources