19 MPG combined is what you get for the driving experience the 2020 Chrysler 300 5.7L V8 offers. This isn’t a car purchased by someone hyper-focused on squeezing every tenth of a gallon from their fuel tank. It’s a choice made by those who value confident power, a comfortable ride, and a touch of old-school American swagger. Buyers understand they’re sacrificing efficiency for the V8 rumble and effortless acceleration that defines the 300’s character.

City and highway performance

The EPA estimates the 2020 Chrysler 300 5.7L V8 achieves 16 MPG in the city and 25 MPG on the highway. The city figure reflects the engine’s thirst for fuel in stop-and-go traffic, a natural consequence of its displacement and power output. The highway number is more appealing, thanks to the eight-speed automatic transmission that allows the engine to cruise at lower RPMs at higher speeds. Even on the open road, enthusiastic use of the throttle to pass or merge will quickly lower the highway figure. This isn’t a car that rewards gentle driving, it’s built for assertive performance.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,750 for the 2020 Chrysler 300 5.7L V8. This figure is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway, using national average fuel prices. Of course, what you actually pay will depend on your individual driving habits and the price of fuel in your area. Drivers who frequently do short trips or have a heavy foot will likely exceed this estimate, while those who do mostly highway miles and drive conservatively may spend less. $2,750 is the baseline, and a clear indicator that owning this particular 300 isn’t for those on a tight budget.

Real-world expectations

While the EPA figures offer a standardized benchmark, real-world fuel economy can vary significantly. Owners report that achieving the EPA’s 25 MPG highway figure requires disciplined driving at consistent speeds. City driving often falls below the 16 MPG estimate, especially during rush hour or in areas with frequent traffic lights.

Some drivers have reported averaging closer to 18-20 MPG overall, a blend of city and highway driving that reflects a more realistic assessment of its fuel consumption in everyday use. Ultimately, the 5.7L V8 is a responsive engine that encourages assertive driving, and that comes at a cost.

How it compares

The 2020 Chrysler 300 5.7L V8’s fuel economy doesn’t exist in isolation. A Dodge Charger R/T with the same engine and transmission delivers nearly identical MPG numbers, a direct comparison given their shared platform and powertrain. Stepping outside the Chrysler family reveals a starker contrast: a Nissan Maxima, with its 3.5L V6, manages around 24 MPG combined, while the Toyota Avalon, a competitor in terms of size and comfort, also achieves around 26 MPG combined in hybrid form. It is helpful to remember that all Chrysler fuel economy data is available to compare different models. The buyer choosing the 300 isn’t necessarily cross-shopping these alternatives, however. They’re drawn to the Chrysler’s specific blend of V8 power, rear-wheel-drive dynamics (available), and distinctive styling, attributes that override pure fuel efficiency concerns. If the V8 isn’t essential, you can consult the 300 MPG across all years and engine options.

Tips to maximize efficiency

Maintaining proper tire inflation is critical. Underinflated tires increase rolling resistance, forcing the engine to work harder and burn more fuel. Check your tire pressure regularly and inflate them to the recommended level, which is typically found on a sticker inside the driver’s side doorjamb.

Avoid aggressive acceleration and hard braking. The 5.7L V8 is responsive, but every burst of acceleration consumes fuel. Anticipate traffic flow and maintain a smooth, consistent speed whenever possible. Gentle acceleration and gradual braking will make a difference.

Reduce idling time. Idling burns fuel without covering any distance. If you’re going to be stopped for more than a minute, turn off the engine. This is particularly relevant in city driving, where traffic congestion is common.

Use cruise control on the highway. Maintaining a consistent speed on long highway drives can significantly improve fuel economy. Use cruise control on flat stretches of road to minimize speed fluctuations.

Keep up with scheduled maintenance. Regular oil changes, air filter replacements, and spark plug maintenance ensure the engine is running efficiently. A poorly maintained engine will burn more fuel.