2018 head-to-head · Midsize Car
2018 Cadillac CT6 Plug-in Hybrid vs Infiniti Q70 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
RWD · 3.5L 6-cyl · 7-speed automatic · 30 MPG
The 2018 Cadillac CT6 Plug-in Hybrid is the cheaper one to run. Driving 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, it costs about $1,830 a year to fuel (62 MPGe + 25 MPG), versus $1,975 for the 2018 Infiniti Q70 Hybrid (30 MPG). That's roughly $145 a year, or about $725 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 Plug-in Hybrid
- Infiniti Q70 Hybrid
Side by side
| Cadillac CT6 Plug-in Hybrid | Infiniti Q70 Hybrid | |
|---|---|---|
| $1,830 | Your annual fuel cost | $1,975 |
| 62 MPGe + 25 MPG | Combined efficiency | 30 MPG |
| 56 MPGe / 23 MPG | City | 28 MPG |
| 71 MPGe / 29 MPG | Highway | 33 MPG |
| 54 kWh | Electricity use (kWh/100 mi) | — |
| 430 mi | Driving range | — |
| 31 mi | All-electric range | — |
| 106 cu ft | Passenger volume | 104 cu ft |
| 10 cu ft | Cargo volume | 11 cu ft |
| 144 g/mi | Tailpipe CO₂ (g/mi) | 296 g/mi |
| 9/10 | EPA fuel economy score | 7/10 |
| 10/10 | EPA greenhouse gas score | 7/10 |
| 4.5 hrs | Charge time at 240V | — |
| Plug-in hybrid | Powertrain | Hybrid |
| Premium gas + electricity | Fuel | Premium gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 3.5L 6-cyl |
| CVT | Transmission | 7-speed automatic |
| RWD | 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 Plug-in Hybrid vs Infiniti Q70 Hybrid across model years
- Cadillac CT6 Plug-in Hybrid
- Infiniti Q70 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 Infiniti Q70 Hybrid has more cargo space (11 vs. 10 cu ft).
Among 74 2018 midsize cars, the Cadillac CT6 Plug-in Hybrid ranks 35th and the Infiniti Q70 Hybrid 44th for lowest fuel cost.
The powertrains differ: the Cadillac CT6 Plug-in Hybrid is a plug-in hybrid, while the Infiniti Q70 Hybrid is a full hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2018 Cadillac CT6 Plug-in Hybrid or the 2018 Infiniti Q70 Hybrid?
Measured by cost to drive, the Cadillac CT6 Plug-in Hybrid. The Cadillac CT6 Plug-in Hybrid is rated 62 MPGe + 25 MPG combined and the Infiniti Q70 Hybrid 30 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Cadillac CT6 Plug-in Hybrid vs. the Infiniti Q70 Hybrid per year?
At 15,000 miles a year with 18¢/kWh electricity and $3.95/gal premium gas, about $1,830 for the Cadillac CT6 Plug-in Hybrid and $1,975 for the Infiniti Q70 Hybrid.
Which has more cargo space?
The Infiniti Q70 Hybrid, with 11 cu ft of luggage volume versus 10 cu ft (EPA interior volume index).
Cadillac CT6 Plug-in Hybrid vs Infiniti Q70 Hybrid in other years
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