2026 head-to-head · Small SUV
2026 Cadillac XT5 vs Lexus RX
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 2026 Cadillac XT5 is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas and $3.95/gal premium gas, it costs about $2,214 a year to fuel (21 MPG), versus $2,370 for the 2026 Lexus RX (25 MPG). That's roughly $156 a year, or about $779 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
- Cadillac XT5
- Lexus RX
Side by side
| Cadillac XT5 | Lexus RX | |
|---|---|---|
| $2,214 | Your annual fuel cost | $2,370 |
| 21 MPG | Combined efficiency | 25 MPG |
| 19 MPG | City | 22 MPG |
| 26 MPG | Highway | 29 MPG |
| 423 g/mi | Tailpipe CO₂ (g/mi) | 354 g/mi |
| 4/10 | EPA fuel economy score | 5/10 |
| 4/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Regular gasoline | Fuel | Premium gasoline |
| 3.6L 6-cyl | Engine / motor | 2.4L 4-cyl turbo |
| 9-speed automatic | Transmission | 8-speed automatic |
| FWD | Drivetrain | FWD |
✓ 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.
Cadillac XT5 vs Lexus RX across model years
- Cadillac XT5
- Lexus RX
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 114 2026 small SUVs, the Cadillac XT5 ranks 97th and the Lexus RX 100th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2026 Cadillac XT5 or the 2026 Lexus RX?
Measured by cost to drive, the Cadillac XT5. The Cadillac XT5 is rated 21 MPG combined and the Lexus RX 25 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 Cadillac XT5 vs. the Lexus RX per year?
At 15,000 miles a year with $3.10/gal regular gas and $3.95/gal premium gas, about $2,214 for the Cadillac XT5 and $2,370 for the Lexus RX.
Cadillac XT5 vs Lexus RX in other years
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