2019 head-to-head · Large Car
2019 Cadillac CT6 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 2019 Tesla Model S is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, it costs about $818 a year to fuel (111 MPGe), versus $2,116 for the 2019 Cadillac CT6 (28 MPG). That's roughly $1,298 a year, or about $6,490 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 CT6
- Tesla Model S
Side by side
| Cadillac CT6 | Tesla Model S | |
|---|---|---|
| $2,116 | Your annual fuel cost | $818 |
| 28 MPG | Combined efficiency | 111 MPGe |
| 24 MPG | City | 115 MPGe |
| 34 MPG | Highway | 107 MPGe |
| — | Electricity use (kWh/100 mi) | 30.3 kWh |
| — | Driving range | 370 mi |
| 110 cu ft | Passenger volume | 94 cu ft |
| 15 cu ft | Cargo volume | 26 cu ft |
| 317 g/mi | Tailpipe CO₂ (g/mi) | 0 g/mi |
| 6/10 | EPA fuel economy score | 10/10 |
| 6/10 | EPA greenhouse gas score | 10/10 |
| — | Charge time at 240V | 12 hrs |
| Gas | Powertrain | Electric |
| Premium gasoline | Fuel | Electricity |
| 2.0L 4-cyl turbo | Engine / motor | Electric motors (398 kW) |
| 10-speed automatic | 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 CT6 vs Tesla Model S across model years
- Cadillac CT6
- 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 CT6 has more passenger space (110 vs. 94 cu ft); the Tesla Model S has more cargo space (26 vs. 15 cu ft).
Among 30 2019 large cars, the Cadillac CT6 ranks 14th 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 CT6; relying on DC fast chargers can erase it.
Frequently asked questions
Which is more fuel-efficient, the 2019 Cadillac CT6 or the 2019 Tesla Model S?
Measured by cost to drive, the Tesla Model S. The Cadillac CT6 is rated 28 MPG combined and the Tesla Model S 111 MPGe (EPA, most efficient configuration of each).
How much does it cost to fuel the 2019 Cadillac CT6 vs. the Tesla Model S per year?
At 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, about $2,116 for the Cadillac CT6 and $818 for the Tesla Model S.
Which has more cargo space?
The Tesla Model S, with 26 cu ft of luggage volume versus 15 cu ft (EPA interior volume index).
Cadillac CT6 vs Tesla Model S in other years
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