2021 Lexus LS 500h MPG & Specs — Real Fuel Cost
Quick answer
The 2021 Lexus LS 500h gets an EPA-estimated 25/33 MPG (city/highway) and 28 MPG combined, with an estimated $2,700/year fuel cost and 314 g/mi CO₂. Engine: 3.5 L 6-cyl.
The 2021 Lexus LS 500h with the 3.5-liter 6-cylinder premium gasoline engine returns an EPA-estimated 25 MPG in the city and 33 MPG on the highway, for a combined 28 MPG. This page summarizes the official EPA fuel-economy and emissions data for this configuration.
| Engine | 3.5 L 6-cyl |
| Transmission | Automatic (AV-S10) |
| Drive | Rear-Wheel Drive |
| Fuel type | Premium Gasoline |
| Vehicle class | Midsize Cars |
| MPG — city | 25 |
| MPG — highway | 33 |
| MPG — combined | 28 |
| Annual fuel cost* | $2,700 |
| CO₂ tailpipe | 314 g/mi |
| EPA GHG score | 6/10 |
How efficient is it?
With a combined 28 MPG, the 2021 Lexus LS 500h sits in the good range for fuel economy. That is about average for its class (Midsize Cars, 26 MPG average).
Fuel economy and running costs
At about $2,700 per year in fuel (EPA estimate, 15,000 mi/yr), fuel is a major part of the cost of owning the 2021 Lexus LS 500h. Over five years that is roughly $13,500 at today's prices — before insurance, maintenance, and depreciation.
Emissions
The 2021 Lexus LS 500h emits approximately 314 grams of CO₂ per mile at the tailpipe, earning an EPA greenhouse-gas score of 6 out of 10. Lower emissions generally track higher fuel economy.
How to read these numbers
EPA figures come from standardized laboratory test cycles and are the same estimates shown on the vehicle's window sticker. Your real-world mileage depends on driving style, conditions, fuel grade, and maintenance. Use combined MPG and annual fuel cost to compare vehicles fairly.