2018 head-to-head · Compact Car
2018 Infiniti QX30 vs Lexus IS
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2018 Infiniti QX30 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,194 a year to fuel (27 MPG), versus $2,279 for the 2018 Lexus IS (26 MPG). That's roughly $84 a year, or about $422 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Infiniti QX30
- Lexus IS
Side by side
| Infiniti QX30 | Lexus IS | |
|---|---|---|
| $2,194 | Your annual fuel cost | $2,279 |
| 27 MPG | Combined efficiency | 26 MPG |
| 24 MPG | City | 22 MPG |
| 33 MPG | Highway | 32 MPG |
| 89 cu ft | Passenger volume | 90 cu ft |
| 19 cu ft | Cargo volume | 11 cu ft |
| 324 g/mi | Tailpipe CO₂ (g/mi) | 345 g/mi |
| 6/10 | EPA fuel economy score | 5/10 |
| 6/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 2.0L 4-cyl turbo |
| 7-speed dual-clutch | Transmission | 8-speed automatic |
| RWD | Drivetrain | RWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Infiniti QX30 vs Lexus IS across model years
- Infiniti QX30
- Lexus IS
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Per EPA interior volume figures, the Infiniti QX30 has more cargo space (19 vs. 11 cu ft).
Among 44 2018 compact cars, the Infiniti QX30 ranks 37th and the Lexus IS 38th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2018 Infiniti QX30 or the 2018 Lexus IS?
Measured by cost to drive, the Infiniti QX30. The Infiniti QX30 is rated 27 MPG combined and the Lexus IS 26 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Infiniti QX30 vs. the Lexus IS per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,194 for the Infiniti QX30 and $2,279 for the Lexus IS.
Which has more cargo space?
The Infiniti QX30, with 19 cu ft of luggage volume versus 11 cu ft (EPA interior volume index).
Infiniti QX30 vs Lexus IS in other years
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