23 MPG combined is what you can expect from the 2020 Lexus RC 350, a number that might raise eyebrows. But focusing solely on this figure misses the point. The RC 350 isn’t about squeezing every last mile from a gallon of fuel, but about delivering a refined driving experience in a stylish, comfortable, and sporty coupe. Buyers typically prioritize those qualities over outright fuel efficiency.

City and highway performance

The EPA numbers show the RC 350 achieves 20 MPG in the city and 28 MPG on the highway. The lower city figure reflects stop-and-go traffic’s inherent inefficiency, amplified by the naturally aspirated 3.5L V6 engine. This engine prefers to rev, and frequent acceleration from a standstill in urban environments demands more fuel. The highway figure of 28 MPG is more respectable, showcasing the engine’s ability to cruise efficiently at constant speeds, aided by the smooth-shifting 8-speed automatic transmission. However, heavy-footed drivers will quickly see this number drop, as the temptation to use the V6’s power on the open road is difficult to resist.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,500 for the 2020 Lexus RC 350. This figure is based on driving 15,000 miles per year, with a mix of city and highway driving, using the national average fuel price. Keep in mind that your individual fuel costs may vary significantly depending on your driving habits, the type of fuel you use, and local fuel prices. For example, aggressive driving or consistent use of premium fuel (though not required) will almost certainly increase your annual fuel expenditure.

Real-world expectations

While the EPA figures provide a standardized baseline, real-world MPG often differs. RC 350 owners often report numbers slightly below the EPA estimates, particularly in combined and city driving. Factors, such as traffic congestion, driving style, and even tire pressure, can all impact fuel economy. It’s crucial to view the EPA numbers as a guide rather than a guaranteed outcome. Those who drive primarily in congested urban areas or have a penchant for spirited driving should anticipate lower MPG. Conversely, those who do mostly highway driving could potentially match or even slightly exceed the EPA’s 28 MPG highway estimate.

How it compares

The RC 350’s fuel economy is in the middle of the luxury coupe class. The BMW 430i Coupe, for instance, delivers a combined 28 MPG from its turbocharged 2.0L four-cylinder engine. While offering better fuel efficiency, the 430i lacks the RC 350’s V6’s character and more linear power delivery. The Infiniti Q60, another competitor, earns a combined 22 MPG with its twin-turbo 3.0L V6, placing it slightly below the RC 350. The Audi A5 Coupe, with its turbocharged four-cylinder, achieves a combined 27 MPG. The important point is the RC 350 buyer’s priorities. If fuel economy is important, other options are available, but for those seeking a blend of luxury, performance, and distinctive styling, and are willing to accept a slightly lower MPG, the RC 350 is a good option. You can compare the RC MPG across all years here. For those curious about offerings from the entire lineup, here’s all Lexus fuel economy data.

Tips to maximize efficiency

While the RC 350 isn’t designed to be a fuel miser, there are several ways to improve your MPG. Avoid aggressive acceleration and braking; smooth, gradual inputs will conserve fuel. The 3.5L V6 rewards a gentle touch on the throttle, and anticipating traffic flow can minimize the need for sudden stops and starts.

Regular maintenance is key to optimal fuel economy. Ensure your tires are properly inflated to the recommended pressure, as underinflated tires increase rolling resistance and decrease MPG. A well-maintained engine runs more efficiently, so follow the Lexus recommended service schedule, including oil changes and air filter replacements.

Consider using the RC 350’s drive modes. The “Eco” mode adjusts the engine and transmission settings to prioritize fuel efficiency, although it may slightly reduce throttle response. Experiment with this mode during routine commutes to see if it improves your MPG without sacrificing too much driving enjoyment.

Minimize unnecessary weight in the vehicle. Extra cargo adds to the car’s overall weight, requiring more energy (and fuel) to accelerate and maintain speed. Remove any items you don’t need on a regular basis to lighten the load and improve fuel economy.

Plan your routes strategically to avoid congested areas and stop-and-go traffic. Idling consumes fuel, so minimizing idling time can contribute to improved MPG. Use navigation apps to identify alternative routes that may be less congested, even if they are slightly longer in distance.