16 MPG combined isn’t a brag-worthy number, but let’s be honest, nobody buys a 2025 Chevrolet Suburban 4WD with the 5.3L V8 expecting Prius-like efficiency. This is a machine designed for hauling large families, towing substantial loads, and conquering demanding conditions, and the fuel economy is simply a cost of doing business for that level of capability.

City and highway performance

The EPA estimates the 2025 Chevrolet Suburban 4WD 5.3L V8 achieves 14 MPG in the city and 19 MPG on the highway. The difference between city and highway figures reveals a critical factor: aerodynamic drag. The Suburban’s considerable size and upright profile mean it fights a constant battle against air resistance at higher speeds. While the 10-speed automatic transmission helps optimize engine RPM for efficiency, physics ultimately dictate fuel consumption. In stop-and-go city driving, where speed is lower and aerodynamic drag is less significant, the engine’s thirst is somewhat mitigated. That said, frequent acceleration from a standstill with a heavy vehicle invariably takes its toll.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2025 Chevrolet Suburban 4WD 5.3L V8 is $2,750. This figure is based on driving 15,000 miles per year, using a blend of city and highway driving, and assumes national average fuel prices. It is important to remember that this is an estimate. Your actual fuel costs will vary depending on your driving habits, local fuel prices, and the specific conditions in which you operate the Suburban.

Real-world expectations

While the EPA provides a standardized benchmark, real-world fuel economy can change significantly. Drivers who primarily use their Suburban for short city trips, heavy towing, or frequent idling are likely to see MPG figures below the EPA estimates. Conversely, those who primarily use it for longer highway journeys, maintain consistent speeds, and minimize idling might experience slightly better fuel economy.

Terrain also plays an important role. Hilly or mountainous areas will undoubtedly increase fuel consumption compared to flat terrain. The type of driving environment and application of this car will directly determine what the operator budgets on fuel.

How it compares

The 2025 Ford Expedition 4×4, with its 3.5L EcoBoost V6, achieves around 17 MPG combined, offering a slight edge in fuel efficiency over the Suburban’s 5.3L V8. However, the Expedition sacrifices some of the traditional V8 sound and feel that many Suburban buyers appreciate. The Toyota Sequoia 4×4, with its hybrid powertrain, averages around 20 MPG combined, presenting an alternative for those prioritizing fuel economy. But the Sequoia’s hybrid system adds complexity and cost, which may deter some buyers. See SUBURBAN MPG across all years here. Buyers weighing the Suburban against alternatives ultimately prioritize its blend of V8 power, towing capacity, interior space, and traditional SUV character, accepting the associated fuel costs. You can also compare all Chevrolet fuel economy data.

Tips to maximize efficiency

Opt for smooth and gradual acceleration whenever possible. The 5.3L V8 delivers ample torque, so there’s rarely a need to aggressively accelerate unless merging onto a highway or passing another vehicle. A lighter foot on the accelerator pedal can significantly reduce fuel consumption, especially in city driving.

Maintain a consistent speed on the highway. Using cruise control when appropriate can help prevent unnecessary speed fluctuations that waste fuel. Avoiding sudden bursts of acceleration or deceleration will contribute to better MPG figures.

Ensure your tires are properly inflated. Under-inflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the recommended pressure listed on the driver’s side door jamb.

Reduce unnecessary weight in the vehicle. The heavier the load, the harder the engine has to work. Removing any unnecessary items from the cargo area can improve fuel economy, especially on shorter trips.

Minimize idling time. Idling consumes fuel without covering any distance. If you anticipate being stationary for more than a minute or two, turn off the engine to conserve fuel. Modern vehicles are designed to restart quickly and efficiently, so there’s no need to let them idle unnecessarily.