19 MPG combined is what you’ll get with the Lexus RC F. This isn’t a hybrid or a fuel-sipping commuter car, it’s a naturally aspirated, high-revving performance coupe designed to stir the soul, not necessarily maximize the miles between fill-ups. The RC F is bought by enthusiasts who value the raw power and character of a traditional V8 engine over outright efficiency, understanding that the two don’t always coexist peacefully.

City and highway performance

EPA estimates peg the 2019 Lexus RC F at 16 MPG in the city and 25 MPG on the highway. The city figure reflects stop-and-go traffic, where the 5.0L V8 constantly accelerates the car’s considerable weight from a standstill. The instantaneous MPG readout can plummet faster than your savings if you’re too heavy with your right foot.

The highway number, however, is more palatable and achievable during long-distance cruising. While 25 MPG isn’t class-leading, it’s respectable enough to prevent frequent gas station stops on road trips, especially when driven in anticipation of road conditions.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Lexus RC F at $3,050. 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. It’s a valuable benchmark, but remember that your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and local fuel prices. Someone with a heavy foot and primarily urban commutes could easily exceed this estimate, while a driver with longer highway stretches may find themselves spending slightly less.

Real-world expectations

While the EPA provides standardized testing data, real-world MPG can vary significantly. Expect to see numbers fluctuate based on driving style, traffic conditions, and even the season. Aggressive acceleration and frequent use of the RC F’s Sport or Sport+ modes will decrease fuel economy. Conversely, smooth, steady driving, particularly on the highway, can yield results closer to, or even slightly above, the EPA’s 25 MPG estimate. It’s all about balancing performance with prudence. Those interested in exploring all Lexus fuel economy data will notice that the character of the vehicle dictates the MPG far more than any fuel-saving technology.

How it compares

The RC F’s fuel economy sits in a predictable range for high-performance coupes. The BMW M4, with its turbocharged inline-six, achieves around 19 MPG combined, mirroring the RC F, but it offers that fuel economy alongside superior straight-line speed. The Mercedes-AMG C63 Coupe, which offers a similarly potent V8, lands at 18 MPG combined, illustrating that there is little variation once you opt for big displacement and effortless horsepower. When you view RC MPG across all years, you’ll see similar patterns, highlighting that the nature of the vehicle determines the fuel economy.

Tips to maximize efficiency

While the RC F isn’t designed for maximum fuel efficiency, there are steps you can take to improve its gas mileage. Avoid aggressive acceleration and hard braking. The RC F’s instant power delivery is addictive, but modulating your throttle inputs will make a difference over time.

Use the car’s Eco mode when appropriate. Although it noticeably dulls throttle response, it can help to curb fuel consumption in less demanding driving situations, such as highway cruising or gentle suburban driving.

Proper tire inflation is critical for optimal fuel economy and handling. Check your tire pressures regularly against the recommended values on the door jamb sticker and adjust as needed. Underinflated tires increase rolling resistance, which negatively impacts MPG.

Shorter trips with a cold engine consume far more fuel than longer journeys where the engine reaches optimal operating temperature. Combining multiple errands into a single trip can reduce the number of cold starts and improve overall fuel economy.