18 MPG combined. That’s not going to win any awards for less gas. But the 2015 Dodge Charger SRT8 6.4L isn’t trying to. This is a fire-breathing, tire-shredding muscle sedan for drivers who prioritize visceral thrills and unapologetic performance over saving fuel. If you’re cross-shopping with a Prius, you’re probably looking at the wrong car. The fuel economy is the price you pay for a roaring V8 and neck-snapping acceleration, and the Charger SRT8’s target market accepts (and often relishes) that.

City and highway performance

Looking at the EPA figures, the Charger SRT8 6.4L gets 15 MPG in the city and 25 MPG on the highway. This difference shows the engine’s nature: inefficient stop-and-go driving is its weakness, while steady cruising at highway speeds allows the engine to stretch its legs. The 8-speed automatic transmission helps optimize both scenarios, offering quicker acceleration off the line and more efficient high-gear cruising. However, even with the advanced transmission, the large 6.4L Hemi V8 is thirsty around town. Few drivers are buying this car hoping to get the best mileage on their commute.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Dodge Charger SRT8 6.4L at $3,200. This is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway, using the national average fuel prices at the time of calculation. This cost can vary considerably depending on driving habits and local fuel prices, but should be a reliable estimate. To get a better sense for how much this car truly costs year after year, add this cost to your car payment.

Real-world expectations

The EPA estimates are a useful starting point, but real-world fuel economy depends heavily on driving style. If you frequently use the engine’s power, expect to see numbers much lower than 15 MPG around town. On the other hand, careful highway driving could get you close to or even a little above the 25 MPG estimate. Aggressive acceleration, frequent hard braking, and extended idling will all hurt fuel consumption.

The Charger SRT8 encourages aggressive driving, so controlling your driving will be harder than with many other vehicles. Drivers who frequently use launch control will also pay a high cost at the pump.

How it compares

The Charger SRT8’s fuel economy is similar to other high-performance sedans from the same time. For example, the 2015 Cadillac CTS V-Sport, with a twin-turbocharged V6, gets 19 MPG combined, a small advantage. The BMW M5 of the same year, with its twin-turbo V8, is rated at 17 MPG combined. While these competitors offer similar performance levels, the Charger SRT8 often appeals to buyers because of its American muscle car character and more aggressive styling.

You can view all Dodge fuel economy data to compare other vehicles and model years. These comparisons show the trade-offs in high-performance vehicles. Some alternatives may offer slightly better fuel efficiency, but they may lack the Charger SRT8’s power, V8 sound, or feel. Check all CHARGER MPG across all years to compare to other trims.

Tips to maximize efficiency

On the highway, use the 8-speed automatic transmission’s higher gears. Use cruise control on long trips to maintain a constant speed and reduce unnecessary acceleration. This can improve highway fuel economy noticeably.

Avoid aggressive acceleration and hard braking. Gentle acceleration plus anticipating traffic flow can improve fuel efficiency, especially in city driving. Every hard launch and sudden stop burns extra fuel.

Make sure your tires are properly inflated. Under-inflated tires increase rolling resistance and hurt fuel economy. Check your tires regularly and keep them at the pressure specified on the door.

Remove extra weight from the vehicle. Carrying extra weight in the trunk or backseat puts strain on the engine and lowers fuel efficiency. Remove anything you don’t need in the car.

Consider using a fuel additive designed to improve combustion and clean fuel injectors. Some additives can slightly improve fuel efficiency and maintain engine performance, but research different products before using.