2018 head-to-head · Midsize & Large SUV
2018 Infiniti QX80 vs Lexus LX
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
4WD · 5.7L 8-cyl · 8-speed automatic · 15 MPG
The 2018 Infiniti QX80 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $3,703 a year to fuel (16 MPG), versus $3,950 for the 2018 Lexus LX (15 MPG). That's roughly $247 a year, or about $1,234 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 QX80
- Lexus LX
Side by side
| Infiniti QX80 | Lexus LX | |
|---|---|---|
| $3,703 | Your annual fuel cost | $3,950 |
| 16 MPG | Combined efficiency | 15 MPG |
| 14 MPG | City | 13 MPG |
| 20 MPG | Highway | 18 MPG |
| 547 g/mi | Tailpipe CO₂ (g/mi) | 597 g/mi |
| 2/10 | EPA fuel economy score | 2/10 |
| 2/10 | EPA greenhouse gas score | 2/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 5.6L 8-cyl | Engine / motor | 5.7L 8-cyl |
| 7-speed automatic | Transmission | 8-speed automatic |
| RWD | Drivetrain | 4WD |
✓ 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 QX80 vs Lexus LX across model years
- Infiniti QX80
- Lexus LX
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 42 2018 midsize & large SUVs, the Infiniti QX80 ranks 38th and the Lexus LX 40th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2018 Infiniti QX80 or the 2018 Lexus LX?
Measured by cost to drive, the Infiniti QX80. The Infiniti QX80 is rated 16 MPG combined and the Lexus LX 15 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Infiniti QX80 vs. the Lexus LX per year?
At 15,000 miles a year with $3.95/gal premium gas, about $3,703 for the Infiniti QX80 and $3,950 for the Lexus LX.
Infiniti QX80 vs Lexus LX in other years
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