Lexus averages 23.4 mpg combined across 16 petrol and diesel models (1990–2026). The best on record does 46 mpg, the thirstiest 13 — a yearly fuel gap of about $2,119. Its 2 electric models sit apart at 122 MPGe — 27.6 kWh per 100 miles, about $563 a year to charge, which is $1,078 less than the average Lexus costs to fuel.
What that actually costs
What a Lexus costs to feed, at 12,000 miles a year and $3.20 a gallon.
| Measure | Value |
|---|---|
| Average combined | 23.4 mpg |
| Fuel per year | $1,641 |
| Most frugal on record | 46 mpg — $835 a year |
| Thirstiest on record | 13 mpg — $2,954 a year |
| Its electric models | 122 MPGe — $563 a year to charge |
Lexus models by gas mileage
From the most frugal down. The yearly figure is what the fuel actually costs at 12,000 miles.
| Model | Average mpg | Best / Worst engine | Fuel per year |
|---|---|---|---|
| Lexus CT | 42 / 42 | $914 | |
| Lexus UX | 43 / 32 | $985 | |
| Lexus HS | 35 / 34 | $1,120 | |
| Lexus NX | 40 / 24 | $1,182 | |
| Lexus ES | 46 / 18 | $1,381 | |
| Lexus RX | 36 / 18 | $1,488 | |
| Lexus TX | 29 / 23 | $1,518 | |
| Lexus LC | 30 / 18 | $1,620 | |
| Lexus RC | 26 / 19 | $1,730 | |
| Lexus IS | 26 / 18 | $1,738 | |
| Lexus GS | 31 / 18 | $1,786 | |
| Lexus LS | 28 / 18 | $1,829 | |
| Lexus SC | 19 / 18 | $2,076 | |
| Lexus GX | 17 / 15 | $2,385 | |
| Lexus LX | 20 / 13 | $2,577 | |
| Lexus LFA | 13 / 13 | $2,954 |
The electric Lexuss, measured differently
Lexus has 2 models that never visit a filling station, averaging 122 MPGe. That figure looks four times better than the 23.4 mpg the petrol Lexuss manage, but the two are not the same unit — so we keep them apart and price the electric ones in kilowatt-hours.
MPG is a number. Dollars per year is the answer.
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How we count
Lexus rests on 423 EPA ratings covering 16 models from 1990 to 2026, plus 2 electric ones counted separately in MPGe. The laboratory numbers are EPA's and go in unchanged; the money is ours, at 12,000 miles a year and $3.20 a gallon. Full method.
Frequently asked questions
What is the average Lexus gas mileage?
23.4 mpg combined across 16 models and 423 EPA ratings, from 1990 to 2026 — 36 model years in one figure, which is why it sits below what a new Lexus does today.
Which Lexus model is the most economical?
The Lexus CT at 42.0 mpg, about $914 a year in fuel, against the LFA at 13.0 mpg and $2,954 — a gap of $2,040 a year between the two ends of the same badge.
How much does a Lexus cost to run?
About $1,641 a year in fuel, at 12,000 miles and $3.20 a gallon. Over five years that is $8,205, before a single service.
Does Lexus make anything electric?
Yes — 2 models, rated 122 MPGe rather than in mpg, which works out to 27.6 kWh per 100 miles and roughly $563 a year at the socket. That is $1,078 less than the average petrol Lexus, though the two ratings are not in the same unit.
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