The 2023 Lexus LC 500 Convertible has an 18 MPG combined fuel economy, a figure that its target audience likely won’t prioritize. These buyers aren’t comparing this beautiful car to efficient models. They want open-air driving, the sound of a V8 engine, and the prestige of a Lexus flagship. If fuel economy was a major concern, they would choose another car.

City and highway performance

The EPA estimates the LC 500 Convertible gets 15 MPG in the city and 25 MPG on the highway. In cities, the car’s weight and large engine affect gas mileage. Expect to stop for gas often if you drive in stop-and-go traffic. However, on the highway, the 10-speed automatic transmission allows the engine to run at lower RPMs, resulting in respectable highway efficiency. Reaching 25 MPG requires careful driving and consistent speeds.

Annual fuel cost

The EPA estimates the 2023 Lexus LC 500 Convertible will cost $3,200 per year in fuel. This is based on 15,000 miles of driving per year and average national fuel prices. Your actual costs could be much different. Your driving habits, location, and local fuel prices will affect how much you spend. The LC 500 Convertible requires premium fuel, so expect higher fuel costs if gas prices increase.

Real-world expectations

EPA figures are a starting point, but the real-world MPG of the LC 500 Convertible depends on driving style. Drivers who often drive aggressively will likely see lower fuel economy than the EPA estimates, it’s part of the car’s appeal. Those who value smooth cruising and drive in efficient modes may get closer to the advertised figures. Many owners likely only use this car on weekends. See LC MPG across all years.

How it compares

The LC 500 Convertible’s fuel economy is lower than some competitors. The BMW M850i Convertible also needs premium fuel, but it gets a slightly better EPA rating of 20 MPG combined because of its turbocharged engine. The Porsche 911 Cabriolet can get around 21 MPG combined in some versions, showing the benefit of a smaller, lighter design and turbocharging. Even the V8 Ford Mustang Convertible, while not a direct luxury competitor, often gets slightly better fuel economy in the city than the Lexus, despite similar power. The difference is noticeable, but the LC 500’s unique feel is something to consider when weighing trade-offs. Also, see all Lexus fuel economy data.

Tips to maximize efficiency

Use the LC 500 Convertible’s drive modes. “Eco” mode changes the throttle and shift points to prioritize saving fuel, which slightly reduces performance but can improve MPG, especially in the city.

Avoid fast acceleration and hard braking. The LC 500 Convertible’s V8 engine responds quickly, but accelerating hard burns fuel. Driving smoothly and consistently is key to good fuel economy.

Keep tires properly inflated. Underinflated tires increase rolling resistance, which hurts fuel economy. Check your tire pressure often and inflate them to the pressure listed on the driver’s side door.

Don’t idle. Letting the engine idle for a long time wastes fuel, especially when it’s cold. Turn off the engine if you’ll be stopped for more than a minute.

Think about your route. Drive routes with fewer stop lights and stops to improve fuel efficiency, since changes in your route will impact MPG.