The 2015 Chevrolet Silverado C15 Cab Chassis 2WD with the 5.3L V8 gets 17 MPG combined. It’s a number that won’t win any awards for lower fuel costs, but it’s a trade-off accepted by those who rely on this truck. This isn’t a personal commuter vehicle designed for optimal fuel efficiency; it’s a workhorse built to haul, tow, and serve as the foundation for commercial applications, from landscaping rigs to mobile workshops.

City and highway performance

The EPA estimates peg the city fuel economy at 15 MPG and the highway figure at 20 MPG. Keep in mind that these numbers are derived from standardized testing, and your actual mileage will vary based on how the truck is used. Stop-and-go city driving, especially with a loaded bed or trailer, will quickly bring the 15 MPG figure down.

On the open highway, a lighter load and consistent speeds can allow you to approach, or even slightly exceed, the 20 MPG estimate. The 6-speed automatic transmission plays a role here, providing reasonable gear ratios for both acceleration and cruising, but the 5.3L V8 is designed for power and dependability, not extreme efficiency.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2015 Chevrolet Silverado C15 Cab Chassis 2WD at $2,600. This figure is based on driving 15,000 miles per year, using a national average fuel price. For businesses that put significantly more miles on their trucks, or for those operating where fuel prices are higher, the actual annual cost will be greater. Smart fleet managers factor these real-world costs into their budgets, balancing fuel expenses with the Silverado’s capabilities and long-term reliability.

Real-world expectations

The published numbers offer a starting point, but a work truck’s fuel economy is heavily influenced by its usage. Hauling heavy materials daily, constant idling on job sites, and frequent short trips can all take a toll. Owners of the Silverado C15 often report figures slightly below the EPA estimates in mixed driving, particularly if the vehicle is regularly used for its intended purpose. Empty weight versus loaded weight is the critical factor here. The Silverado’s fuel consumption will be much higher when fully loaded with equipment or materials.

How it compares

Compared to similar bare chassis trucks from 2015, the Silverado’s fuel economy is broadly in line with its competitors. For example, a 2015 Ford F-150 XL regular cab with the 5.0L V8 and 2WD achieves an EPA-estimated 17 MPG combined, mirroring the Silverado. A Ram 1500 Tradesman with the 5.7L HEMI V8 manages also around 17 MPG combined. These are fairly small differences, and buyers in this segment often prioritize factors like payload capacity, upfitting options, and overall durability over slight variations in fuel efficiency. For example, you might check out SILVERADO MPG across all years and compare them. If a buyer seeks a Chevrolet, this cab chassis version is one of many from the brand. See all Chevrolet fuel economy data.

Tips to maximize efficiency

Regular maintenance is important. Ensure the engine is properly tuned, the tires are correctly inflated, and the air filter is clean. A well-maintained engine will always run more efficiently.

Avoid unnecessary idling. While it’s tempting to leave the engine running on job sites, excessive idling burns fuel and contributes to wear and tear. Shutting off the engine, even for short periods, can make a noticeable difference over time.

Drive smoothly and avoid aggressive acceleration and braking. The Silverado’s 5.3L V8 delivers ample power, but using it carefully will help save fuel. Anticipate traffic flow and maintain a steady pace whenever possible.

Consider aftermarket modifications carefully. While some modifications, like a tonneau cover, can slightly improve aerodynamics, others, such as oversized tires or lift kits, will negatively impact fuel economy. Choose modifications that align with the truck’s primary purpose and prioritize efficiency where possible.

Monitor fuel consumption. Track your mileage and fuel purchases to identify any potential issues or opportunities for improvement. If you notice a sudden drop in fuel economy, it could indicate a mechanical problem that needs to be addressed.