19 MPG combined. Anyone considering a 2023 Chrysler 300 with the 5.7L Hemi V8 will see this number. This is a characteristic that separates those who appreciate the 300 for its unapologetic character from those seeking the most efficient vehicle. It’s not a Prius. It’s a full-size sedan with American muscle, and that means higher fuel consumption.

City and highway performance

The EPA estimates the 2023 Chrysler 300 5.7L V8 achieves 16 MPG in the city and 25 MPG on the highway. The city figure reflects the engine’s inefficiency during stop-and-go driving, where the large displacement and lack of hybrid assistance affect the MPG. The highway number is more respectable, aided by the 8-speed automatic transmission which allows the engine to cruise at lower RPMs. However, aggressive driving, even on the open road, will quickly diminish that number. The 5.7L Hemi rewards a smooth and deliberate driving style with its best fuel economy, but those rewards will never be class-leading.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,750 for the 2023 Chrysler 300 5.7L. This calculation assumes 15,000 miles of driving per year, with a specific percentage split between city and highway miles, and uses the national average fuel price for regular gasoline. Buyers need to consider that changes of gas prices will shift this annual number and understand that their personal real-world fuel costs depend heavily on driving style and the proportion of city versus highway miles.

Real-world expectations

Do not expect to consistently match the EPA numbers in real-world driving. The 16 MPG city rating is particularly optimistic if you live in an area with frequent stoplights, heavy congestion, or hilly terrain. Occasional highway trips can bring the average up, but consistently exceeding 25 MPG on the highway requires disciplined driving. Owners often report combined averages closer to the 17-18 MPG range, which is a more realistic expectation for this vehicle. Track your mileage diligently for an accurate assessment.

How it compares

The 2023 Chrysler 300 5.7L V8 faces limited direct competition in its segment, as many manufacturers have shifted away from large, V8-powered sedans. The Nissan Maxima, with its 3.5-liter V6, is rated at 28 MPG combined. Those seeking all-out performance might cross-shop with a Dodge Charger R/T, which shares the 5.7L Hemi and achieves similar fuel economy. The Charger Scat Pack, with its 6.4L V8, drops considerably to around 18 MPG combined. The Cadillac CT5 offers varying engine choices, with the turbo-4 being a great fuel alternative, while the V model prioritizes immense power over MPG. The Chrysler 300 buyer prioritizes traditional American sedan attributes, and they tend to accept the fuel economy tradeoffs as part of the experience. Before committing, review all Chrysler fuel economy data to see the MPG trends across the brand.

Tips to maximize efficiency

The 5.7-liter Hemi benefits greatly from gentle acceleration and maintaining a steady speed. Avoid aggressive throttle inputs, especially from a standstill, as this is the quickest way to drain the fuel tank. Use the adaptive cruise control on highways to maintain a consistent speed and distance from other vehicles, minimizing unnecessary acceleration and braking.

Keep your tires properly inflated to the recommended pressure listed on the driver’s side doorjamb. Underinflated tires increase rolling resistance, reducing fuel economy and negatively affecting handling. Check your tire pressure regularly, especially during temperature changes.

Reduce unnecessary weight in the vehicle. Remove any items you don’t need, such as extra tools, sports equipment, or other cargo, as added weight forces the engine to work harder, impacting fuel efficiency. Cleaning out the trunk can provide a noticeable improvement.

Consider using a fuel additive designed to clean fuel injectors and improve combustion. Over time, deposits can build up in the fuel system, reducing engine efficiency. Make sure that you only use fuel treatments designed for modern fuel injected systems.

Regular maintenance is critical for optimal fuel economy. Ensure that the engine air filter is clean, the spark plugs are in good condition, and the engine oil is fresh. A well-maintained engine runs more efficiently, saving you money at the pump in the long run. Don’t forget to research the 300 MPG across all years to see changes in efficiency across model years.