18 MPG combined is what you get for the distinct experience offered by the 2022 Lexus LC 500 Convertible. This isn’t a car designed for maximum fuel efficiency; it’s a rolling sculpture propelled by a glorious naturally aspirated 5.0L V8. Buyers prioritize the sound of eight cylinders over getting every last mile from a gallon of premium fuel. People choose this car knowing what it prioritizes.

City and highway performance

The EPA estimates this LC 500 Convertible at 15 MPG in the city and 25 MPG on the highway. The city figure reflects the engine’s thirst in stop-and-go conditions, made worse by the car’s weight. However, the 25 MPG highway figure shows that even a powerful V8 can achieve reasonable efficiency at consistent speeds. This is where the 10-speed automatic transmission shines, allowing the engine to cruise at lower RPMs and conserve fuel on long journeys.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2022 Lexus LC 500 Convertible is $3,200. This is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway, using national average fuel prices for premium gasoline. Keep in mind that depending on your local gas prices, and the actual number of miles you drive, your fuel cost may be higher.

Real-world expectations

While the EPA figures provide a baseline, real-world fuel economy will vary based on driving style and conditions. Drivers who frequently accelerate and engage the V8’s power will likely see numbers below the EPA estimates. On the other hand, those who drive calmly, taking advantage of the car’s smooth cruising, may meet or exceed the highway MPG rating, if not the city figures.

How it compares

Compared to competitors, the LC 500 Convertible’s fuel economy reflects its focus on performance and a naturally aspirated powertrain. For example, a BMW M850i Convertible, with its turbocharged V8, achieves a slightly better 17 MPG city and 25 MPG highway. A Porsche 911 Carrera S Cabriolet, with its turbocharged flat-six engine, does better at 18 MPG city and 25 MPG highway. However, neither offers the same aural experience as the Lexus’s 5.0L eight-cylinder engine. This comparison highlights the tradeoffs buyers make: slightly better fuel economy versus the character and sound of the V8.

Tips to maximize efficiency

While maximizing fuel economy might not be the top priority for LC 500 Convertible owners, there are still steps you can take to conserve fuel. Smooth and consistent acceleration will reduce fuel consumption compared to hard launches. The car’s automatic transmission is tuned for both performance and efficiency and uses all ten gears to its advantage.

Avoid idling for extended periods. If you know you will be stopped longer than a minute consider turning off the engine where it is safe and legal to do so. This is particularly important in the city. Modern engines consume fuel even when stationary, and restarting is more efficient than prolonged idling.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressures regularly and inflate them to the recommended levels found on the door jamb sticker.

Reduce unnecessary weight in the vehicle. Extra weight increases the engine’s workload, leading to higher fuel consumption. Remove any non-essential items from the trunk and passenger compartment.

Consider using the car’s drive modes strategically. While “Sport” mode unleashes the engine’s full potential, “Normal” or “Eco” mode can optimize fuel efficiency for everyday driving. See LC MPG across all years. Find all Lexus fuel economy data at FuelEconomyHub.