18 MPG combined. Nobody buys a 2018 Dodge Challenger with the 6.4-liter Hemi V8 expecting Prius-level fuel efficiency. This isn’t a commuter car, it’s a statement. It’s a modern muscle car designed to deliver raw power and a visceral driving experience. The fuel consumption is a consequence, and for many Challenger owners, a price willingly paid for the performance and image this car provides. They’re buying a slice of American automotive history, wrapped in aggressive styling and powered by a legendary engine.

City and highway performance

The EPA estimates for the 2018 Challenger 6.4L are 15 MPG in the city and 25 MPG on the highway. The city figure reflects stop-and-go traffic where the big V8 is constantly pulling the car from a standstill, while the cylinder deactivation system struggles to engage frequently. The highway number suggests long-distance cruising capability, assuming you can resist the urge to dip into the throttle. That smooth-shifting eight-speed automatic helps on the open road, keeping the engine in its sweet spot for efficiency when you’re not demanding maximum power.

Annual fuel cost

The EPA estimates the annual fuel cost for this model at $3,200. This is based on driving 15,000 miles per year and using national average fuel prices. This figure will vary depending on your individual driving habits and where you live, as fuel prices fluctuate regionally and even locally. Aggressive driving will significantly increase this cost, whereas a more relaxed approach may lower it slightly. But the $3,200 figure serves as a useful benchmark for potential owners trying to budget for the realities of owning a high-performance machine.

Real-world expectations

While the EPA numbers provide a baseline, real-world fuel economy can vary widely depending on driving style and conditions. Owners reporting their own figures often see numbers slightly below the EPA estimates, especially in mixed driving. Regular use of the Hemi’s power will affect fuel economy. Consider the EPA numbers to be optimistic under ideal circumstances, but factor in lower averages for everyday driving. A lead foot will make a noticeable difference in how often you’re visiting the gas station.

How it compares

Compared to other muscle cars of the era, the Challenger’s fuel economy is roughly in the middle. A 2018 Ford Mustang GT with its 5.0L V8 is EPA-rated at 19 MPG combined, while a Chevrolet Camaro SS with the 6.2L V8 manages 20 MPG combined. Even these MPG differences can add up over time, but the buyer of a Challenger 6.4L isn’t primarily focused on saving money at the pump. Looking at all Dodge fuel economy data reveals that the Challenger sits towards the bottom of the range. If fuel economy is a priority, perhaps exploring a V6 Challenger model is worth considering, the CHALLENGER MPG across all years confirms the V6 offers substantially better economy at the cost of straight-line speed.

Tips to maximize efficiency

While the Challenger 6.4L isn’t designed for hypermiling, there are steps you can take to improve its fuel efficiency. Avoid aggressive acceleration and hard braking. Smooth, gentle inputs will help keep the engine in its most efficient operating range and reduce unnecessary fuel consumption.

Use the Challenger’s drive modes. Experiment with the “Eco” mode, if equipped, which will adjust throttle response and shift patterns for improved fuel economy. While it will reduce the performance somewhat, it can be a viable option for highway cruising.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which impacts fuel economy. Check your tire pressure regularly and maintain the recommended levels for optimal performance and efficiency.

Minimize idling. Letting the engine idle for extended periods wastes fuel unnecessarily. If you’re stopped for more than a minute or two, consider turning off the engine to conserve fuel. This is especially helpful in city traffic.