2018 head-to-head · Large Car vs Midsize Car
2018 Cadillac CT6 vs Cadillac CT6 Plug-in Hybrid
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
RWD · 2.0L 4-cyl turbo · CVT · 62 MPGe + 25 MPG
The 2018 Cadillac CT6 Plug-in Hybrid is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas, 18¢/kWh electricity and $3.95/gal premium gas, it costs about $1,830 a year to fuel (62 MPGe + 25 MPG), versus $2,214 for the 2018 Cadillac CT6 (21 MPG). That's roughly $384 a year, or about $1,921 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
- Cadillac CT6 Plug-in Hybrid
Side by side
| Cadillac CT6 | Cadillac CT6 Plug-in Hybrid | |
|---|---|---|
| $2,214 | Your annual fuel cost | $1,830 |
| 21 MPG | Combined efficiency | 62 MPGe + 25 MPG |
| 18 MPG | City | 56 MPGe / 23 MPG |
| 27 MPG | Highway | 71 MPGe / 29 MPG |
| — | Electricity use (kWh/100 mi) | 54 kWh |
| — | Driving range | 430 mi |
| — | All-electric range | 31 mi |
| 110 cu ft | Passenger volume | 106 cu ft |
| 15 cu ft | Cargo volume | 10 cu ft |
| 416 g/mi | Tailpipe CO₂ (g/mi) | 144 g/mi |
| 4/10 | EPA fuel economy score | 9/10 |
| 4/10 | EPA greenhouse gas score | 10/10 |
| — | Charge time at 240V | 4.5 hrs |
| Gas | Powertrain | Plug-in hybrid |
| Regular gasoline | Fuel | Premium gas + electricity |
| 3.6L 6-cyl | Engine / motor | 2.0L 4-cyl turbo |
| 8-speed automatic | Transmission | CVT |
| AWD | Drivetrain | RWD |
✓ 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 Cadillac CT6 Plug-in Hybrid across model years
- Cadillac CT6
- Cadillac CT6 Plug-in Hybrid
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. 106 cu ft); the Cadillac CT6 has more cargo space (15 vs. 10 cu ft).
The powertrains differ: the Cadillac CT6 is a conventional gas model, while the Cadillac CT6 Plug-in Hybrid is a plug-in hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2018 Cadillac CT6 or the 2018 Cadillac CT6 Plug-in Hybrid?
Measured by cost to drive, the Cadillac CT6 Plug-in Hybrid. The Cadillac CT6 is rated 21 MPG combined and the Cadillac CT6 Plug-in Hybrid 62 MPGe + 25 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Cadillac CT6 vs. the Cadillac CT6 Plug-in Hybrid per year?
At 15,000 miles a year with $3.10/gal regular gas, 18¢/kWh electricity and $3.95/gal premium gas, about $2,214 for the Cadillac CT6 and $1,830 for the Cadillac CT6 Plug-in Hybrid.
Which has more cargo space?
The Cadillac CT6, with 15 cu ft of luggage volume versus 10 cu ft (EPA interior volume index).
Cadillac CT6 vs Cadillac CT6 Plug-in Hybrid in other years
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