2018 head-to-head · Midsize Car
2018 Infiniti Q50 vs Lexus GS
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 Lexus GS is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,279 a year to fuel (26 MPG), versus $2,370 for the 2018 Infiniti Q50 (25 MPG). That's roughly $91 a year, or about $456 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 GS
Side by side
| Infiniti Q50 | Lexus GS | |
|---|---|---|
| $2,370 | Your annual fuel cost | $2,279 |
| 25 MPG | Combined efficiency | 26 MPG |
| 23 MPG | City | 22 MPG |
| 30 MPG | Highway | 32 MPG |
| 102 cu ft | Passenger volume | 99 cu ft |
| 13 cu ft | Cargo volume | 14 cu ft |
| 349 g/mi | Tailpipe CO₂ (g/mi) | 345 g/mi |
| 5/10 | EPA fuel economy score | 5/10 |
| 5/10 | 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 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 GS across model years
- Infiniti Q50
- Lexus GS
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 Lexus GS has more cargo space (14 vs. 13 cu ft).
Among 74 2018 midsize cars, the Infiniti Q50 ranks 59th and the Lexus GS 55th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2018 Infiniti Q50 or the 2018 Lexus GS?
Measured by cost to drive, the Lexus GS. The Infiniti Q50 is rated 25 MPG combined and the Lexus GS 26 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Infiniti Q50 vs. the Lexus GS per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,370 for the Infiniti Q50 and $2,279 for the Lexus GS.
Which has more cargo space?
The Lexus GS, with 14 cu ft of luggage volume versus 13 cu ft (EPA interior volume index).
Infiniti Q50 vs Lexus GS in other years
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