19 MPG combined. That figure defines the 2017 Lexus GS F. It’s not impressive, it’s not economical, but it’s the price of admission for a visceral driving experience in a comfortable, luxurious package. The GS F isn’t for hypermilers; it’s for enthusiasts who crave the direct connection and intoxicating soundtrack of a naturally aspirated 5.0L V8, even if it means making friends with their local gas station attendant.

City and highway performance

The EPA rates the 2017 Lexus GS F at 16 MPG in the city and 24 MPG on the highway. The discrepancy highlights the GS F’s Jekyll and Hyde personality. In stop-and-go traffic, the large-displacement V8 and relatively heavy curb weight conspire to deliver predictably poor fuel economy. However, on the open road, the smooth-shifting 8-speed automatic transmission and relatively long gearing allow the engine to settle into a more efficient cruise, edging closer to the 24 MPG highway estimate. Achieving that highway number requires a very disciplined right foot; the temptation to unleash the V8’s power is ever-present.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2017 Lexus GS F is $3,050. This calculation is based on driving 15,000 miles per year and using national average fuel prices. Of course, actual fuel costs will vary depending on individual driving habits, local fuel prices, and the percentage of city versus highway driving. For GS F owners who frequently indulge in spirited driving, or live in areas with particularly high fuel costs, expect to surpass that $3,050 figure rather quickly.

Real-world expectations

Drivers should approach the EPA’s estimates as a best-case scenario, especially with a performance car like the GS F. Real-world MPG will likely be lower. Enthusiasts who prioritize performance will see numbers closer to the city rating, maybe even a bit less. Drivers who often cruise on the highway and use a light foot might see the EPA highway figure, but a combined number near 19 MPG will likely be the average. The car’s eagerness to rev and reward the driver with that glorious V8 roar makes restraint exceptionally difficult.

How it compares

The GS F sits in a competitive segment, and its fuel economy lags behind some rivals, while beating others. The BMW M550i xDrive, with its turbocharged V8 and all-wheel drive, achieves 20 MPG combined, offering similar performance with slightly better efficiency. The Mercedes-AMG E43 (later E53) also uses a turbocharged powerplant and manages around 22 MPG combined. These numbers are important to some buyers, but the GS F’s naturally aspirated engine offers a completely different driving experience, justifying the fuel economy penalty for some. A comparable Audi would be the S6, which delivers around 21 combined MPG. However, for drivers prioritizing a high-revving, naturally aspirated engine, fuel economy is secondary to the unique character of the Lexus. You can also compare GS MPG across all years to see how this model fares over time. Be sure to examine all Lexus fuel economy data as well.

Tips to maximize efficiency

Smooth and steady acceleration helps to maximize fuel economy. The GS F’s engine is responsive, so there’s no need to stomp on the accelerator pedal to get up to speed. Gentle inputs minimize fuel consumption. While tempting, avoiding frequent bursts of acceleration will also lessen your time at the pump.

Anticipate traffic flow and maintain a consistent speed whenever possible. Frequent braking and acceleration waste fuel. Maintaining a steady pace not only improves fuel economy, and also reduces stress on the vehicle and the driver.

Use the GS F’s drive mode selector to your advantage. Eco mode softens throttle response and adjusts transmission shift points to prioritize fuel efficiency, while Sport and Sport+ modes prioritize performance. Select Eco mode when fuel efficiency is a primary concern, especially when not in spirited driving conditions.

Ensure the tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check the tire pressure regularly and inflate them to the recommended levels, typically found on a sticker inside the driver’s side doorjamb.

Avoid unnecessary idling. If you’re stopped for more than a minute or two, turn off the engine to conserve fuel; the GS F’s engine starts up quickly and easily. Excessive idling is a notorious gas-guzzler.

The 2017 Lexus GS F is a deliberate choice. Its buyers accept the fuel economy shortcomings because of that thrilling V8 symphony and the overall driving experience. It’s a statement about prioritizing visceral engagement over pure efficiency, and for those who understand that trade-off, the GS F delivers a truly unique and rewarding driving experience that its turbocharged rivals simply cannot replicate.