2018 Lexus RX
Fuel economy, running costs, emissions and safety · from U.S. EPA and NHTSA data
The 2018 Lexus RX is sold in the U.S. with gasoline and hybrid power. The EPA lists 6 configurations for this model year, with combined economy from 21 to 30 MPG and an estimated annual fuel cost of $2,650 to $3,100 at 15,000 miles.
Key numbers
| Model year | 2018 |
|---|---|
| Vehicle class | Small Sport Utility Vehicle 2WD |
| Fuel type(s) | Gasoline, Hybrid |
| Combined economy | 21-30 MPG |
| Best / worst combined | 30 / 21 MPG |
| Annual fuel cost | $2,650-$3,100 |
| Tailpipe CO₂ | 297-432 g/mi |
| EPA smog rating | 5-7 / 10 |
What it costs to fuel
Across its configurations, the 2018 RX costs about $2,650 to $3,100 a year to fuel at the EPA's 15,000-mile basis, averaging roughly $2,867. Over five years that is about $14,333 in fuel alone before maintenance, insurance and depreciation — which is why the running cost, not just the price, decides what a car really costs.
Relative to an average new vehicle, this RX configuration spends about $1,750 more on fuel over five years.
For context, the average combined economy of small sport utility vehicle 2wd in this dataset is about 26 MPG. The RX sits roughly 0 MPG below that mark at its midpoint, making it thirstier than average for its EPA class.
Configurations and fuel economy
| Version | Engine | Drive | Trans | Fuel | Combined | Annual fuel |
|---|---|---|---|---|---|---|
| RX 450h AWD | 3.5L 6-cyl | All-Wheel | Automatic | Hybrid | 30 MPG | $2,650 |
| RX 450h L AWD | 3.5L 6-cyl | All-Wheel | Automatic | Hybrid | 29 MPG | $2,750 |
| RX 350 | 3.5L 6-cyl | Front-Wheel | Automatic | Gasoline | 23 MPG | $2,800 |
| RX 350 AWD | 3.5L 6-cyl | All-Wheel | Automatic | Gasoline | 22 MPG | $2,950 |
| RX 350 L | 3.5L 6-cyl | Front-Wheel | Automatic | Gasoline | 22 MPG | $2,950 |
| RX 350 L AWD | 3.5L 6-cyl | All-Wheel | Automatic | Gasoline | 21 MPG | $3,100 |
Emissions, safety and size
The 2018 RX records tailpipe CO₂ of 297-432 g/mi, an EPA smog rating of 5-7 out of 10. The EPA classifies it as small sport utility vehicle 2wd.
Compare this car
Open the comparison tool to line this 2018 RX up against any other vehicle in the database, or jump to other years and trims from the 2018 Lexus RX overview.
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Data: U.S. EPA FuelEconomy.gov (public domain) and NHTSA SafetyRatings. Figures are EPA estimates; real-world results vary.