18 MPG combined is what you get with the 2015 Dodge Challenger 6.4L. Nobody buys a Challenger Scat Pack or SRT 392 expecting Prius-like fuel efficiency. This vehicle is purchased for its snarling V8 sound, its muscle car presence, and its ability to light up the rear tires easily. The fuel economy is a trade-off most owners are willing to make.

City and highway performance

The EPA estimates peg the 2015 Dodge Challenger 6.4L at 15 MPG in the city and 25 MPG on the highway. The city figure reflects the heavy weight and large engine working harder in stop-and-go conditions. The highway number is heavily dependent on a steady throttle and the automatic transmission’s ability to lock up the torque converter in top gear at cruising speeds. Even a little throttle will make that 25 MPG figure plummet.

Annual fuel cost

The EPA says the annual fuel cost for the 2015 Dodge Challenger 6.4L is about $3,200. This is based on driving 15,000 miles per year, with 55% in the city and 45% on the highway. It assumes regular unleaded gasoline at the national average price. Your actual fuel costs may vary depending on your driving habits, local fuel prices, and the type of gasoline you use.

Real-world expectations

While the EPA numbers provide a baseline, real-world fuel economy for the 2015 Dodge Challenger 6.4L will likely be lower for most drivers because it’s hard to resist the 485 horsepower. Expect averages closer to 12-14 MPG in the city and maybe around 22 MPG on the highway if you practice restraint. Fuel economy will be an afterthought for enthusiasts who regularly enjoy spirited driving or track days, and single-digit MPG figures are possible. Those seeking better economy may be interested to view all Dodge fuel economy data.

How it compares

The Challenger 6.4L’s fuel economy is similar to other performance cars of its era. A 2015 Ford Mustang GT with the 5.0L V8 and automatic transmission gets about 19 MPG combined, only a single MPG improvement. A Chevrolet Camaro SS from the same year, with its 6.2L V8 and automatic, gets similar numbers. The Challenger’s retro styling and larger size contribute to a slight disadvantage in fuel efficiency. If maximizing MPG is your aim, exploring CHALLENGER MPG across all years might be beneficial. Some modern pony cars have smaller, turbocharged engines, like the Mustang EcoBoost (25 MPG combined), which offer much better fuel economy but lack the visceral experience that Challenger buyers crave.

Tips to maximize efficiency

Don’t floor the accelerator all the time. The 6.4L Hemi responds quickly, but even moderate throttle delivers plenty of performance without using so much fuel. Smooth acceleration will make a difference.

Use the Challenger’s adaptive cruise control on the highway. Consistent speed minimizes unnecessary acceleration and deceleration, improving fuel efficiency on long trips.

Make sure your tires have the recommended pressure. Underinflated tires increase rolling resistance, making the engine work harder and consume more fuel. Check your tire pressure often, especially when the temperature changes.

Don’t idle too much. Modern engines are efficient when running, but idling burns fuel without going anywhere. Turn off the engine if you’ll be stopped for more than a minute.

If your Challenger has a less aggressive driving mode, consider using it. Sport or Track modes prioritize throttle response and shift points, which lowers fuel economy. Use the standard driving mode for everyday driving to save gas.