19 MPG combined won’t win any fuel efficiency awards, but it’s also secondary to the mission of the 2018 Lexus RC F. This isn’t a car for hypermilers or those primarily concerned with minimizing their carbon footprint. It’s a high-performance coupe designed to deliver a visceral driving experience, and that experience demands a naturally aspirated 5.0-liter V8, a powerplant known as much for its sound and responsiveness as its thrift.

City and highway performance

The RC F’s EPA ratings break down to 16 MPG in the city and 25 MPG on the highway. The city figure reflects the engine’s thirst during stop-and-go driving, where the large displacement V8 is constantly accelerating from a standstill. On the open road, however, the story is slightly better. While 25 MPG isn’t spectacular, it demonstrates that the RC F can achieve reasonable efficiency during steady-state cruising. The eight-speed automatic transmission also plays a role here, allowing the engine to remain at lower RPMs at higher speeds, reducing fuel consumption.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2018 Lexus RC F is $3,050. This figure is based on driving 15,000 miles per year and using the national average fuel price at the time of calculation. Your actual fuel costs will vary depending on your driving habits and local fuel prices, of course. Drivers with a heavy foot or those who spend most of their time in congested urban areas can expect to exceed this estimate, while those who primarily drive on the highway may see slightly lower costs. This estimate provides a useful benchmark for comparing running costs with other vehicles, but it’s crucial to personalize it based on your own circumstances.

Real-world expectations

While the EPA provides standardized fuel economy estimates, real-world MPG often differs. The RC F’s naturally aspirated V8 is particularly sensitive to driving style. A smooth, conservative approach will yield results closer to the EPA figures, while frequent acceleration and spirited driving will see those numbers plummet. Owners should also consider the impact of modifications such as aftermarket exhaust systems or performance tuning, which can further affect fuel consumption. Ultimately, drivers should expect a range of fuel economy figures depending on their individual driving patterns and conditions.

How it compares

Compared to its competitors, the RC F’s fuel economy lands in a predictable range. The BMW M4, for instance, offers a slightly better EPA combined rating of 19 MPG, thanks to its turbocharged inline-six engine. The Mercedes-AMG C63 Coupe, with its twin-turbo V8, achieves a similar combined rating of 19 MPG. The Audi RS 5 Coupe posts a combined rating of 22 MPG thanks to its smaller turbocharged V6.

The RC F differs in its engine’s character: naturally aspirated, high-revving, and immediate in its response. The slight penalty in fuel economy is a conscious tradeoff that many RC F buyers are willing to make for this unique driving experience. Those who prioritize fuel economy above all else might consider the Audi, but those seeking a raw, unfiltered V8 experience will likely find the RC F’s compromise acceptable. See all Lexus fuel economy data to compare Lexus models. For RC MPG across all years, see our model information.

Tips to maximize efficiency

The RC F’s fuel economy can be improved with mindful driving habits. Avoid aggressive acceleration and maintain a steady pace, especially on the highway. The V8 is responsive and entertaining, but it also consumes fuel rapidly when pushed hard. Gentle acceleration will make a difference over time.

Regular maintenance plays a key role in maintaining optimal fuel efficiency. Ensure that the engine is properly tuned, the tires are correctly inflated, and the air filter is clean. These routine checks contribute to overall engine health and can prevent unnecessary fuel consumption. Sticking to the factory service schedule is a great way to keep the RC F operating at peak efficiency.

Use the RC F’s drive mode selector. The “Eco” mode, while perhaps not the most exciting choice, can significantly reduce fuel consumption in city driving by modifying throttle response and shift patterns to prioritize efficiency over performance. Don’t be afraid to use it when you’re not looking for maximum thrills.

Reduce unnecessary weight in the vehicle. Excess cargo adds to the overall load, forcing the engine to work harder and consume more fuel. Remove any items you don’t need for your daily commute or weekend drives. A lighter car is always a more efficient car.