For a full-size, rear-wheel-drive truck, 20 MPG combined from the 2015 Chevrolet Silverado C15 2WD with the 4.3L V6 is a compromise, and one most buyers understand well. This isn’t about getting maximum fuel savings; it’s about having a capable work truck that can handle loads and still be affordable to operate.

City and highway performance

The EPA estimates for the 2015 Silverado C15 2WD with the 4.3L V6 are 18 MPG in the city and 24 MPG on the highway. The six-speed automatic transmission helps optimize fuel efficiency by keeping the engine in its most efficient RPM range at various speeds. City driving, with its stop-and-go traffic and lower average speeds, predictably lags the highway number. The 24 MPG highway estimate requires a light foot and consistent speeds. Aggressive acceleration and frequent braking will quickly reduce those figures. Adding weight to the bed or towing will also significantly impact fuel economy both around town and at freeway speeds.

Annual fuel cost

The EPA estimates the annual fuel cost for this Silverado configuration at $2,200. That calculation assumes 15,000 miles of driving per year, with a mix of city and highway miles, and uses the national average fuel price at the time of calculation. While this provides a benchmark for comparing against other vehicles and trims, your actual fuel costs will vary. Your driving habits, the specific roads you travel, and fluctuating fuel prices will all heavily impact how much you spend at the pump each year. The $2,200 figure is best used as a general gauge. Check all Chevrolet fuel economy data on FuelEconomyHub.com.

Real-world expectations

While the EPA provides standardized testing, real-world fuel economy often differs. The 20 MPG combined figure is achievable in everyday driving, but requires a conscious effort to drive efficiently. Hauling even moderate loads in the bed, especially in hilly environments, will drop MPG into the mid-teens. On the other hand, those who primarily use this truck for unloaded commuting on relatively flat highways might see numbers closer to 25 or even 26 MPG on longer trips, under ideal conditions.

How it compares

The fuel economy of the 2015 Silverado C15 2WD 4.3L V6 is typical for its class. A comparable 2015 Ford F-150 with the 3.5L V6 (non-turbo) offers similar figures, around 18 MPG city and 25 MPG highway in 2WD trim. However, if you step up to the F-150’s 2.7L EcoBoost V6, you’ll see improved numbers, often exceeding 20 MPG combined. A similarly equipped 2015 RAM 1500 with the 3.6L V6 slots in roughly the same range as the Silverado, at around 17 MPG city and 25 MPG highway. The Silverado’s numbers make it a decent option, and one with a lower sticker price than some competitors. The Silverado’s appeal lies in its blend of capability, affordability, and straightforward simplicity, so comparing against alternatives depends on the priorities of the buyer. Don’t forget to check all SILVERADO MPG across all years.

Tips to maximize efficiency

Maintain proper tire inflation. This is the simplest way to improve fuel economy, yet it is often overlooked. Check your tires regularly and inflate them to the pressure listed on the sticker inside the driver’s side door. Under-inflated tires create more rolling resistance, forcing the engine to work harder and consume more fuel.

Anticipate traffic flow and avoid unnecessary braking. The 4.3L V6 performs best when you are smooth with the throttle. By looking ahead and timing your approach to traffic lights and other obstacles, you can minimize braking and then accelerating again, which burns extra fuel.

Reduce idling time. Idling consumes fuel without covering any distance. If you anticipate sitting still for more than a minute or two, turn off the engine. This is relevant in work environments where the truck might be left running for extended periods.

Lighten the load. The 4.3L V6 doesn’t have power to spare, so the heavier your truck, the more fuel it will consume. Remove any unnecessary items from the bed or cab to reduce weight and improve your fuel economy. This includes anything from tools you don’t need to recreational gear.

Service the engine. A well-maintained engine is an efficient engine. Follow the manufacturer’s recommended maintenance schedule, including regular oil changes, air filter replacements, and spark plug inspections. A poorly running engine will inevitably consume more fuel.