2018 head-to-head · Midsize Car
2018 Cadillac CT6 Plug-in Hybrid vs Volvo S90 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
AWD · 2.0L 4-cyl turbo · 8-speed automatic · 71 MPGe + 29 MPG
The 2018 Volvo S90 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 $1,649 a year to fuel (71 MPGe + 29 MPG), versus $1,830 for the 2018 Cadillac CT6 Plug-in Hybrid (62 MPGe + 25 MPG). That's roughly $181 a year, or about $906 over five years.
Your numbers
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Fuel cost over 10 years
- Cadillac CT6 Plug-in Hybrid
- Volvo S90 Plug-in Hybrid
Side by side
| Cadillac CT6 Plug-in Hybrid | Volvo S90 Plug-in Hybrid | |
|---|---|---|
| $1,830 | Your annual fuel cost | $1,649 |
| 62 MPGe + 25 MPG | Combined efficiency | 71 MPGe + 29 MPG |
| 56 MPGe / 23 MPG | City | 70 MPGe / 26 MPG |
| 71 MPGe / 29 MPG | Highway | 72 MPGe / 33 MPG |
| 54 kWh | Electricity use (kWh/100 mi) | 45 kWh |
| 430 mi | Driving range | 410 mi |
| 31 mi | All-electric range | 21 mi |
| 106 cu ft | Passenger volume | 102 cu ft |
| 10 cu ft | Cargo volume | 14 cu ft |
| 144 g/mi | Tailpipe CO₂ (g/mi) | 161 g/mi |
| 9/10 | EPA fuel economy score | 9/10 |
| 10/10 | EPA greenhouse gas score | 10/10 |
| 4.5 hrs | Charge time at 240V | 3 hrs |
| Plug-in hybrid | Powertrain | Plug-in hybrid |
| Premium gas + electricity | Fuel | Premium gas + electricity |
| 2.0L 4-cyl turbo | Engine / motor | 2.0L 4-cyl turbo |
| CVT | Transmission | 8-speed automatic |
| 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 Plug-in Hybrid vs Volvo S90 Plug-in Hybrid across model years
- Cadillac CT6 Plug-in Hybrid
- Volvo S90 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
The Cadillac CT6 Plug-in Hybrid goes farther between stops: about 430 miles on a full tank and charge, compared with 410 miles for the Volvo S90 Plug-in Hybrid.
Per EPA interior volume figures, the Cadillac CT6 Plug-in Hybrid has more passenger space (106 vs. 102 cu ft); the Volvo S90 Plug-in Hybrid has more cargo space (14 vs. 10 cu ft).
Among 74 2018 midsize cars, the Cadillac CT6 Plug-in Hybrid ranks 35th and the Volvo S90 Plug-in Hybrid 33rd for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2018 Cadillac CT6 Plug-in Hybrid or the 2018 Volvo S90 Plug-in Hybrid?
Measured by cost to drive, the Volvo S90 Plug-in Hybrid. The Cadillac CT6 Plug-in Hybrid is rated 62 MPGe + 25 MPG combined and the Volvo S90 Plug-in Hybrid 71 MPGe + 29 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Cadillac CT6 Plug-in Hybrid vs. the Volvo S90 Plug-in 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 $1,649 for the Volvo S90 Plug-in Hybrid.
Which has more range?
The Cadillac CT6 Plug-in Hybrid: about 430 miles versus 410 miles.
Which has more cargo space?
The Volvo S90 Plug-in Hybrid, with 14 cu ft of luggage volume versus 10 cu ft (EPA interior volume index).
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