2026 Chevy Silverado MPG by Trim: TurboMax to Diesel

What Is the 2026 Chevy Silverado 1500's MPG Rating?

The 2026 Chevy Silverado 1500's EPA-estimated fuel economy spans a wider range than almost any other half-ton pickup — from 16 mpg combined on the highest-output 6.2L V8 up to 25 mpg combined on the available 3.0L Duramax turbo-diesel. Because Chevrolet offers four distinct engines across the Silverado 1500's nine trims — Work Truck (WT), Custom, Custom Trail Boss, LT, LT Trail Boss, RST, LTZ, High Country, and ZR2 — the mpg figure on the window sticker depends more on which engine and drivetrain you select than on the trim name itself.

Because most Silverado 1500 trims let you choose between two or three engines, the same trim name can carry noticeably different mpg ratings depending on how it's optioned — which is why we recommend checking the specific configuration's window sticker rather than assuming mpg by trim level alone.

2026 Chevy Silverado 1500 Engine, Specs & Trim MPG Breakdown

All nine 2026 Silverado 1500 trims offer at least one engine choice, and several offer two or three, so the table below breaks down the standard and available engines — and their EPA-estimated combined mpg — trim by trim.

Trim pricing starts at roughly $38,900 for the WT and climbs to the mid-$60,000s for a well-equipped High Country or ZR2 (all figures approximate starting MSRP before destination); choosing the Duramax diesel typically adds $3,500–$5,000 to any eligible trim, a cost that's frequently offset over time by the diesel's roughly 40–50% mpg advantage over the 6.2L V8. Our finance team can help structure a payment around whichever engine and trim combination makes the most sense for you.

Why MPG Varies So Much Across Silverado Trims

The mpg spread comes down to engine displacement, weight, and gearing rather than trim badge. The 2.7L TurboMax is a smaller-displacement turbocharged four-cylinder that runs efficiently under light and moderate loads, which is why it leads the gas lineup. The 5.3L and 6.2L V8s trade some of that efficiency for higher towing capacity and smoother power delivery under heavy loads, and the 6.2L in particular is reserved for 4WD-only trims where weight and demand are highest. The 3.0L Duramax turbo-diesel bridges the gap: diesel fuel's higher energy density and the engine's low-rpm torque let it out-tow most V8 configurations while still delivering the best mpg in the lineup.

Has the Silverado 1500's MPG Rating Changed for 2026?

The 2026 Silverado 1500 is largely a carryover model year, and EPA fuel economy ratings carry over essentially unchanged from 2025 across every engine. Chevrolet's running changes for 2026 are limited to two new exterior colors — Polar White Tricoat and White Sands, detailed in our 2026 Silverado 1500 colors guide — along with new accessory options and a new RST Select special edition that pairs 20-inch gloss-black wheels with the 8-speed automatic TurboMax powertrain. Shoppers can expect the same real-world fuel economy as the outgoing model year.

How to Get the Best Real-World Fuel Economy from Your Silverado

EPA figures are measured under controlled conditions, but a few habits and maintenance choices make a real difference in the mpg you'll actually see day to day, especially on the mountain grades common around Newport and the Smokies.

Driving Habits That Affect MPG

Smooth, gradual acceleration keeps the TurboMax engine out of boost more often and lets the V8s' cylinder-deactivation technology run in efficiency mode longer, both of which burn noticeably less fuel than aggressive throttle inputs. Steady highway speeds, anticipating stops instead of hard braking, and minimizing extended idling — particularly with a loaded bed or an attached trailer — all help every Silverado 1500 engine get closer to its EPA rating.

Tire Pressure, Maintenance & Fuel Type

Underinflated tires and overdue maintenance are two of the most common reasons any truck falls short of its rated mpg, and it's an even bigger factor on a vehicle this size. Checking your tire pressure and tread regularly, using the recommended fuel grade for your engine (regular unleaded for the gas engines, diesel for the Duramax), and staying current on oil changes and air filter service all help the Silverado's engine run efficiently. Our certified service department can keep your Silverado's maintenance schedule on track so small issues don't quietly chip away at your fuel economy.

Estimated Driving Range & Fuel Costs

With a fuel tank that ranges from roughly 24 to 26 gallons depending on cab, bed, and drivetrain, a 2.7L TurboMax Silverado 1500 in 2WD form can travel an estimated 480 miles between fill-ups, while a 5.3L or 6.2L V8 configuration covers closer to 400 miles combined. The available 3.0L Duramax turbo-diesel goes considerably further — roughly 650 miles combined with a standard tank, and up to an estimated 700 miles with the available extended-range fuel tank, among the longest range of any half-ton pickup. Because diesel and gas prices fluctuate, it's worth running your own numbers with a current local price per gallon, but every Silverado 1500 configuration keeps fuel stops manageable for regular commuting, hauling, and weekend towing trips.

How the Silverado 1500's MPG Compares to Other Full-Size Trucks

The 2026 Chevy Silverado 1500's mpg lands competitively against the segment's other half-ton trucks, and its available Duramax diesel gives it an efficiency option most rivals can't fully match. Here's how it stacks up against the most cross-shopped full-size pickups:

In everyday gas form, the Silverado 1500's TurboMax essentially ties the Toyota Tundra's twin-turbo V6 and lands just behind the F-150 EcoBoost and Ram 1500 eTorque, both of which lean on hybrid-assist or mild-hybrid tech to close the gap. Once the Duramax diesel enters the picture, though, the Silverado 1500 pulls ahead of every hybrid and gas rival in the segment — a genuine advantage for high-mileage commuters and tow-heavy owners alike. Shoppers who want the full head-to-head breakdown, including towing, tech, and pricing, can see our detailed comparisons of the Silverado 1500 vs. Ford F-150, the 2026 Silverado 1500 vs. Ram 1500, and the Silverado 1500 vs. Toyota Tundra.