2026 head-to-head · Midsize & Large SUV
2026 Cadillac Optiq vs Tesla Model X
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
On fuel costs these two are nearly tied. Driving 15,000 miles a year with 18¢/kWh electricity, the most efficient 2026 Cadillac Optiq (105 MPGe) costs about $867 a year to fuel and the 2026 Tesla Model X (105 MPGe) about $869.
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 Optiq
- Tesla Model X
Side by side
| Cadillac Optiq | Tesla Model X | |
|---|---|---|
| $867 | Your annual fuel cost | $869 |
| 105 MPGe | Combined efficiency | 105 MPGe |
| 117 MPGe | City | 110 MPGe |
| 93 MPGe | Highway | 99 MPGe |
| 32.1 kWh | Electricity use (kWh/100 mi) | 32.2 kWh |
| 317 mi | Driving range | 352 mi |
| 102 cu ft | Passenger volume | — |
| 26 cu ft | Cargo volume | — |
| 0 g/mi | Tailpipe CO₂ (g/mi) | 0 g/mi |
| 9/10 | EPA fuel economy score | 9/10 |
| 10/10 | EPA greenhouse gas score | 10/10 |
| 9.5 hrs | Charge time at 240V | 14 hrs |
| Electric | Powertrain | Electric |
| Electricity | Fuel | Electricity |
| Electric motors (465 kW) | Engine / motor | Electric motors (497 kW) |
| Single-speed | Transmission | Single-speed |
| RWD | Drivetrain | AWD |
✓ 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 Optiq vs Tesla Model X across model years
- Cadillac Optiq
- Tesla Model X
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
The Tesla Model X goes farther between stops: about 352 miles on a charge, compared with 317 miles for the Cadillac Optiq.
Among 91 2026 midsize & large SUVs, the Cadillac Optiq ranks 3rd and the Tesla Model X 4th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2026 Cadillac Optiq or the 2026 Tesla Model X?
Measured by cost to drive, the Cadillac Optiq. The Cadillac Optiq is rated 105 MPGe combined and the Tesla Model X 105 MPGe (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 Cadillac Optiq vs. the Tesla Model X per year?
At 15,000 miles a year with 18¢/kWh electricity, about $867 for the Cadillac Optiq and $869 for the Tesla Model X.
Which has more range?
The Tesla Model X: about 352 miles versus 317 miles.
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