15 MPG combined is the figure associated with the 2020 Chevrolet Silverado Cab Chassis 2WD 5.3L 8-cyl. It’s not great, but this isn’t a vehicle bought to impress anyone with hybrid technology. It’s a workhorse, a bare-bones platform for upfitting into tow trucks, utility beds, construction vehicles, and countless other specialized applications. Its buyers are more concerned with payload capacity, GVWR, and PTO functionality than with saving money on gas. The tax benefits of owning a commercial vehicle can also reduce the impact of the Silverado’s fuel consumption.

City and highway performance

The EPA breaks down the Silverado Cab Chassis’ fuel economy, reporting 14 MPG in the city and 18 MPG on the highway. These figures highlight the engine’s limitations. Frequent stops and starts in the city require more fuel to move the heavy chassis. Highway driving, with consistent speeds, allows the engine to operate more efficiently, but aerodynamic drag still affects performance due to the cab’s upright design and any specialized equipment mounted behind it.

Keep in mind these figures represent the unladen chassis cab. Adding equipment, tools, and materials will cause both the city and highway MPG figures to decrease noticeably.

Annual fuel cost

The EPA estimates the annual fuel cost for operating the 2020 Chevrolet Silverado Cab Chassis 2WD 5.3L 8-cyl at $2,900. This is based on driving 15,000 miles per year and using national averages for fuel prices. Expect to pay more if fuel prices in your area are higher, or if you drive more than 15,000 miles per year. For businesses with fleets of these vehicles, accurate fuel expense forecasting is critical because these costs can quickly increase and affect profitability. Owners can view all Chevrolet fuel economy data on our site.

Real-world expectations

While the official EPA estimates offer a starting point, real-world fuel economy for the Silverado Cab Chassis will vary depending on several factors. Driving style, load weight, terrain, and weather conditions all have an impact. Aggressive acceleration and frequent braking will reduce fuel efficiency, as will driving in hilly areas. Added weight from cargo or upfitting equipment requires more engine power, and fuel consumption rises. Headwinds also make the engine work harder, decreasing efficiency. Many operators report MPG figures below 12 MPG in everyday use, especially with heavy payloads or in stop-and-go traffic.

How it compares

The 2020 Ford F-350 XL Regular Cab Chassis 4×2 with the 6.2L V8 offers similar capabilities and fuel economy. The EPA estimates it at 15 MPG combined, matching the Silverado. The Ram 3500 Tradesman Regular Cab Chassis 4×2 with the 6.4L V8 has no official EPA fuel economy ratings, but user data suggests a similar range to the Silverado and Ford. Even small differences matter to fleet managers who track costs on a per-vehicle basis because every mile per gallon counts when maintaining a fleet of a dozen vehicles or more. Buyers who want to prioritize fuel economy might consider the Ram 3500 Chassis Cab with the Cummins diesel engine. Its higher initial cost can be offset by better fuel economy for high-mileage operators. For complete SILVERADO MPG across all years, access our vehicle database.

Tips to maximize efficiency

Regular maintenance is critical for optimizing fuel economy in the Silverado Cab Chassis. Follow the manufacturer’s recommended service intervals for oil changes, air filter replacements, and spark plug replacements. A neglected engine will always use more fuel.

Tire pressure affects rolling resistance. Make sure the tires are inflated to the recommended pressure, which is usually found on a sticker inside the driver’s side doorjamb or in the owner’s manual. Check tire pressure regularly, especially when the temperature changes.

Minimize idling time. Idling wastes fuel. If you expect to be stationary for more than a minute or two, turn off the engine to save fuel, reduce emissions, and reduce wear on the engine.

Consider upfitting choices carefully. Use lighter materials when possible and minimize the aerodynamic impact of any equipment added to the chassis. A streamlined utility body or lighter towing equipment can reduce drag and improve fuel efficiency.

Adjust driving habits. Avoid aggressive acceleration and hard braking, maintain a steady speed, and anticipate traffic conditions to avoid unnecessary stops. Cruise control on the highway can help maintain a consistent speed and optimize fuel consumption, but use it responsibly and never in dangerous conditions.