22 MPG combined in the 2017 Lexus RC 350 3.5L 6-cyl isn’t going to win any hypermiling awards, and that’s perfectly fine. This car isn’t about squeezing every last drop of fuel; it’s about delivering a satisfying blend of luxury, style, and performance in a coupe package. Its buyers are typically professionals, empty-nesters, or those who simply prioritize driving pleasure over ultimate efficiency. The RC 350 is a statement, and the fuel bill is simply part of the cost of entry into that world.

City and highway performance

The RC 350’s EPA estimates break down to 19 MPG in the city and 28 MPG on the highway. The city figure reflects the realities of stop-and-go traffic, where the 3.5L V6 works harder. The eight-speed automatic transmission (S8) does its best to manage the engine’s power, but frequent acceleration and idling inevitably take their toll. The 28 MPG highway number is more palatable and achievable during steady-state cruising where the engine can settle into a more efficient rhythm. However, expect that highway figure to dip if you frequently engage in spirited driving or exceed posted speed limits. This car begs to be driven, and resisting that temptation is definitely a factor in maximizing its MPG.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Lexus RC 350 at $2,650. This figure is based on driving 15,000 miles per year and using national average fuel prices. Naturally, your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and local fuel prices. If you primarily drive in the city or have a lead foot, expect to spend more. Conversely, if you do primarily highway driving and adopt a more conservative driving style, you may be able to lower that annual cost. It is always wise to check all Lexus fuel economy data to put individual vehicles into context.

Real-world expectations

While the EPA estimates provide a standardized benchmark, real-world fuel economy can vary. RC 350 owners report figures close to the EPA estimates, with some seeing slightly better highway mileage and some experiencing worse city mileage. Aggressive acceleration, frequent short trips, and neglecting routine maintenance can all negatively affect fuel economy. The RC 350’s V6 engine responds well to smooth, deliberate driving techniques. This car does not reward heavy-footedness when it comes to fuel efficiency. Check RC MPG across all years to see if there are any consistent trends.

How it compares

Compared to other coupes in its class, the RC 350’s fuel economy is neither exceptionally good nor particularly poor. For example, the BMW 440i Coupe (2017) with the 3.0L inline-6 delivers around 25 MPG combined. A comparable Audi A5 Coupe comes in around 24 MPG combined with its 2.0T engine. The Infiniti Q60 Red Sport 400, offers comparable power to the RC 350, but with a similar fuel economy rating in the low 20s MPG. This level of MPG is simply the price to pay for a certain level of performance and luxury in this segment, and RC 350 buyers understand this trade-off. They value the Lexus’s reputation for reliability, comfortable ride, and distinctive styling, and are willing to accept its fuel economy as a consequence.

Tips to maximize efficiency

One of the simplest ways to improve fuel efficiency in your RC 350 is to adopt a smoother driving style. Avoid sudden acceleration and braking, and try to maintain a steady speed whenever possible. Anticipate traffic flow to minimize the need for hard braking.

Regular maintenance is also critical for optimal fuel economy. Ensure that your tires are properly inflated, as underinflated tires increase rolling resistance and reduce MPG. Also, be sure to keep up with scheduled oil changes and air filter replacements, as these simple tasks can have a noticeable impact on fuel efficiency.

The RC 350 features different driving modes that can affect fuel consumption. Eco mode prioritizes fuel efficiency by adjusting throttle response and transmission shift points. While it may slightly reduce performance, it can help you save fuel, especially in city driving.

Minimize unnecessary weight in your vehicle. Extra cargo in the trunk or on the back seats increases the amount of energy required to accelerate and maintain speed. Remove any items you don’t need to carry around daily.

Consider using cruise control on long highway drives. This helps maintain a consistent speed, which can improve fuel economy compared to fluctuating speed due to varying throttle input. Also, avoid excessive idling, as it burns fuel without moving the vehicle.