2018 head-to-head · Large Car
2018 Cadillac XTS vs Tesla Model S
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 Tesla Model S is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas and 18¢/kWh electricity, it costs about $880 a year to fuel (103 MPGe), versus $2,114 for the 2018 Cadillac XTS (22 MPG). That's roughly $1,233 a year, or about $6,167 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 XTS
- Tesla Model S
Side by side
| Cadillac XTS | Tesla Model S | |
|---|---|---|
| $2,114 | Your annual fuel cost | $880 |
| 22 MPG | Combined efficiency | 103 MPGe |
| 19 MPG | City | 102 MPGe |
| 28 MPG | Highway | 105 MPGe |
| — | Electricity use (kWh/100 mi) | 32.6 kWh |
| — | Driving range | 259 mi |
| 104 cu ft | Passenger volume | 94 cu ft |
| 18 cu ft | Cargo volume | 26 cu ft |
| 404 g/mi | Tailpipe CO₂ (g/mi) | 0 g/mi |
| 4/10 | EPA fuel economy score | 10/10 |
| 4/10 | EPA greenhouse gas score | 10/10 |
| — | Charge time at 240V | 12 hrs |
| Gas | Powertrain | Electric |
| Regular gasoline | Fuel | Electricity |
| 3.6L 6-cyl | Engine / motor | Electric motor (75 kW) |
| 6-speed automatic | Transmission | Single-speed |
| FWD | 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 XTS vs Tesla Model S across model years
- Cadillac XTS
- Tesla Model S
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 Cadillac XTS has more passenger space (104 vs. 94 cu ft); the Tesla Model S has more cargo space (26 vs. 18 cu ft).
Among 31 2018 large cars, the Cadillac XTS ranks 15th and the Tesla Model S 2nd for lowest fuel cost.
Because the Tesla Model S is fully electric, it has no tailpipe emissions and its running cost depends almost entirely on your electricity rate. Cheap overnight home charging widens its advantage over the Cadillac XTS; relying on DC fast chargers can erase it.
Frequently asked questions
Which is more fuel-efficient, the 2018 Cadillac XTS or the 2018 Tesla Model S?
Measured by cost to drive, the Tesla Model S. The Cadillac XTS is rated 22 MPG combined and the Tesla Model S 103 MPGe (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Cadillac XTS vs. the Tesla Model S per year?
At 15,000 miles a year with $3.10/gal regular gas and 18¢/kWh electricity, about $2,114 for the Cadillac XTS and $880 for the Tesla Model S.
Which has more cargo space?
The Tesla Model S, with 26 cu ft of luggage volume versus 18 cu ft (EPA interior volume index).
Cadillac XTS vs Tesla Model S in other years
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