19 MPG combined won’t win any fuel efficiency awards, but the 2021 Lexus RC F isn’t built to sip fuel. It’s a high-performance coupe powered by a naturally aspirated 5.0L V8, an engine configuration increasingly rare. The RC F appeals to drivers who prioritize raw power, a distinctive exhaust note, and a visceral driving experience over outright efficiency. These are enthusiasts willing to trade a few MPGs for the unique thrill this Lexus delivers.

City and highway performance

The EPA estimates the RC F achieves 16 MPG in the city and 24 MPG on the highway. The city figure reflects the engine’s thirst in stop-and-go traffic, where the 5.0L V8 is operating at its least efficient. The highway number, while still not class-leading, is more respectable. Cruising at steady speeds allows the engine to settle into a more relaxed state, improving fuel consumption. Drivers who spend a significant portion of their time in urban environments will likely see lower overall fuel economy than those who primarily use the RC F for longer highway journeys. The eight-speed automatic transmission, programmed for both smooth shifts and aggressive downshifts, plays a role in both city and highway fuel consumption.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2021 Lexus RC F is approximately $3,050. This figure is based on driving 15,000 miles per year and using national averages for fuel prices. Keep in mind that this is just an estimate; your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and local gas prices. Drivers with a heavy foot, or those who frequently engage in spirited driving, can expect to exceed this estimate. Conversely, those who prioritize fuel conservation may be able to get closer to, or even slightly better, than the EPA’s number. Fuel type is not specified, but premium gasoline is required for optimal performance, increasing the overall running costs.

Real-world expectations

While the EPA provides a standardized testing measure, real-world fuel economy for the RC F often differs. Drivers who enjoy the car’s performance capabilities, including frequent acceleration and high-speed cruising, will likely see numbers closer to the lower end of the EPA range, or even slightly below. The RC F’s aggressive styling and powerful engine naturally encourage a more spirited driving style which impacts fuel efficiency. Even with enthusiastic driving, most owners report that the RC F’s fuel economy remains relatively consistent, hovering around the EPA estimates. Many drivers accept this tradeoff, understanding that the RC F’s primary mission is not to save fuel, but to deliver a thrilling driving experience. Check out RC MPG across all years to see how the RC F compares to other RC models.

How it compares

Compared to its competitors in the high-performance coupe segment, the RC F’s fuel economy is generally in line with expectations. The BMW M4, for example, is rated at 19 MPG combined with its 3.0L inline-six, so almost exactly the same but with a very different character. A Mercedes-AMG C63 Coupe, with its twin-turbo 4.0L V8, achieves a similar combined rating of around 18 MPG. The Audi RS5 manages slightly better with its 2.9L twin-turbo V6, achieving 20 MPG combined. Buyers considering the RC F are typically less focused on maximizing fuel efficiency and more concerned with the overall driving experience, including the engine’s sound, responsiveness, and power delivery. Still, understanding how it stacks up against the competition is a normal part of the shopping process. Compare all Lexus fuel economy data to see Lexus’ overall MPG performance.

Tips to maximize efficiency

Avoid aggressive acceleration and hard braking. The RC F’s powerful engine responds quickly to throttle inputs, but excessive acceleration consumes fuel rapidly. Anticipating traffic flow and applying smooth, gradual acceleration can significantly improve fuel economy. Similarly, avoid sudden braking, which wastes kinetic energy. Instead, try to coast to a stop whenever possible.

Maintain a steady speed on the highway. The RC F is capable of exceeding posted speed limits with ease, but maintaining a consistent speed within the legal limit contributes to better fuel economy. Using cruise control on long highway drives can help minimize speed fluctuations and optimize fuel consumption.

Ensure proper tire inflation. Underinflated tires increase rolling resistance, which forces the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the recommended levels, which can be found on the driver’s side doorjamb or in the owner’s manual.

Reduce unnecessary weight. Carrying excessive weight in the trunk or passenger compartment puts additional strain on the engine, reducing fuel efficiency. Remove any unnecessary items from the car to minimize weight and optimize fuel consumption. Nobody buys an RC F to haul a bunch of junk around.

Consider using the car’s driving modes. The RC F offers different driving modes that can affect fuel economy. Eco mode, if available, typically adjusts engine and transmission settings to prioritize efficiency. While it may slightly reduce performance, it can help improve fuel economy in certain driving conditions. Sport modes are not usually helpful for fuel economy.