19 MPG combined is what owners of the 2019 GMC Sierra C10 XFE 2WD with the 5.3L V8 get. It’s not an award-winning number, but it’s the price for those who need the capability and reliable nature of a full-size, light duty pickup. This isn’t just basic transportation; it’s a tool, and fuel economy is less important for the Sierra’s target customer.

City and highway performance

The EPA estimates 17 MPG in the city and 24 MPG on the highway for this Sierra. This reflects stop-and-go driving versus steady cruising. The 8-speed automatic transmission tries to keep the engine efficient, but the truck’s weight and the naturally aspirated V8’s thirst ultimately dictate the numbers. Highway driving shows the potential for the best fuel efficiency, with the engine at lower RPMs. City driving sees the fuel economy suffer from frequent acceleration and idling. All GMC data, including the Sierra, shows better highway mileage.

Annual fuel cost

The EPA calculates an annual fuel cost of $2,300 for the 2019 GMC Sierra C10 XFE 2WD, based on driving 15,000 miles per year and using national average fuel prices. This lets you compare the Sierra to other vehicles. Your actual costs will vary depending on your driving, local prices, and the type of fuel you use. Heavy towing or hard acceleration will significantly increase your bill. Conservative driving and cruise control can help you get closer to, or even beat, the EPA’s projection.

Real-world expectations

The EPA estimates provide a benchmark, but real-world MPG will vary. Driving style, cargo weight, and tire pressure can all impact fuel consumption. Owners who use their Sierra for commuting or light tasks may find themselves closer to the EPA’s estimates or slightly better. However, those who regularly tow or haul heavy loads should expect fuel economy to dip below the official figures, perhaps well below them. If fuel savings is most important, consider alternatives to this Sierra.

How it compares

Compared to the Ford F-150, the Sierra’s fuel economy is comparable, especially with similar V8 engines. A 2019 F-150 with the 5.0L V8 and 2WD is rated by the EPA at 17 MPG city and 23 MPG highway, almost identical to the Sierra. The Ram 1500 can achieve slightly better fuel economy with its eTorque mild-hybrid system, but it often comes with a configuration trade-off, like drivetrain or bed length. The Chevrolet Silverado, mechanically identical to the Sierra, will have the same 17 MPG city and 24 MPG highway. The choice between these trucks often comes down to styling and features, not necessarily fuel economy. Check the SIERRA MPG across all years.

Tips to maximize efficiency

Even with a V8 engine, you can improve your fuel economy in the 2019 GMC Sierra. Smooth acceleration is key. Avoid aggressive starts and hard braking, as these consume significantly more fuel than gentle driving.

Maintaining proper tire inflation is critical. Check your tire pressure regularly and inflate them to the manufacturer’s recommended specifications, which can be found on the driver’s side doorjamb. Underinflated tires create more rolling resistance, which increases fuel consumption. A simple tire gauge helps ensure your tires are properly inflated.

Minimize idling. Idling for extended periods consumes more fuel than restarting the engine. If you anticipate being stationary for more than a minute or two, it is generally more efficient to turn off the engine and restart it when you are ready to proceed.

When possible, reduce unnecessary weight. The heavier your Sierra, the more fuel it will consume. Remove any cargo or equipment that you don’t need to carry regularly. A cleaner truck bed translates to better efficiency.

Consider using cruise control on the highway. Cruise control helps maintain a constant speed, reducing fluctuations in fuel consumption. Engage this feature whenever road conditions and traffic allow for steady speeds, as it also reduces foot fatigue over long distances.