2015 head-to-head · Midsize Car
2015 Infiniti Q50 vs Lexus LS
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 2015 Infiniti Q50 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,576 a year to fuel (23 MPG), versus $3,118 for the 2015 Lexus LS (19 MPG). That's roughly $542 a year, or about $2,712 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 Q50
- Lexus LS
Side by side
| Infiniti Q50 | Lexus LS | |
|---|---|---|
| $2,576 | Your annual fuel cost | $3,118 |
| 23 MPG | Combined efficiency | 19 MPG |
| 20 MPG | City | 16 MPG |
| 29 MPG | Highway | 24 MPG |
| 102 cu ft | Passenger volume | 103 cu ft |
| 14 cu ft | Cargo volume | 14 cu ft |
| 384 g/mi | Tailpipe CO₂ (g/mi) | 460 g/mi |
| 5/10 | EPA fuel economy score | 4/10 |
| 5/10 | EPA greenhouse gas score | 4/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 3.7L 6-cyl | Engine / motor | 4.6L 8-cyl |
| 7-speed automatic | 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 Q50 vs Lexus LS across model years
- Infiniti Q50
- Lexus LS
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
Among 69 2015 midsize cars, the Infiniti Q50 ranks 54th and the Lexus LS 62nd for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2015 Infiniti Q50 or the 2015 Lexus LS?
Measured by cost to drive, the Infiniti Q50. The Infiniti Q50 is rated 23 MPG combined and the Lexus LS 19 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Infiniti Q50 vs. the Lexus LS per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,576 for the Infiniti Q50 and $3,118 for the Lexus LS.
Infiniti Q50 vs Lexus LS in other years
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