2016 head-to-head · Large Car
2016 Cadillac CT6 vs Mercedes-Benz S-Class 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 · 3.0L 6-cyl turbo · 7-speed automatic · 58 MPGe + 26 MPG
The 2016 Cadillac CT6 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 $1,860 a year to fuel (25 MPG), versus $2,037 for the 2016 Mercedes-Benz S-Class Plug-in Hybrid (58 MPGe + 26 MPG). That's roughly $177 a year, or about $887 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
- Mercedes-Benz S-Class Plug-in Hybrid
Side by side
| Cadillac CT6 | Mercedes-Benz S-Class Plug-in Hybrid | |
|---|---|---|
| $1,860 | Your annual fuel cost | $2,037 |
| 25 MPG | Combined efficiency | 58 MPGe + 26 MPG |
| 22 MPG | City | 54 MPGe / 24 MPG |
| 30 MPG | Highway | 63 MPGe / 30 MPG |
| — | Electricity use (kWh/100 mi) | 59 kWh |
| — | Driving range | 450 mi |
| — | All-electric range | 14 mi |
| 110 cu ft | Passenger volume | 112 cu ft |
| 15 cu ft | Cargo volume | 9 cu ft |
| 357 g/mi | Tailpipe CO₂ (g/mi) | 227 g/mi |
| 6/10 | EPA fuel economy score | 7/10 |
| 6/10 | EPA greenhouse gas score | 9/10 |
| — | Charge time at 240V | 2.8 hrs |
| Gas | Powertrain | Plug-in hybrid |
| Regular gasoline | Fuel | Premium gas + electricity |
| 2.0L 4-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 8-speed automatic | 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 vs Mercedes-Benz S-Class Plug-in Hybrid across model years
- Cadillac CT6
- Mercedes-Benz S-Class 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 cargo space (15 vs. 9 cu ft).
Among 30 2016 large cars, the Cadillac CT6 ranks 6th and the Mercedes-Benz S-Class Plug-in Hybrid 13th for lowest fuel cost.
The powertrains differ: the Cadillac CT6 is a conventional gas model, while the Mercedes-Benz S-Class Plug-in Hybrid is a plug-in hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2016 Cadillac CT6 or the 2016 Mercedes-Benz S-Class Plug-in Hybrid?
Measured by cost to drive, the Cadillac CT6. The Cadillac CT6 is rated 25 MPG combined and the Mercedes-Benz S-Class Plug-in Hybrid 58 MPGe + 26 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2016 Cadillac CT6 vs. the Mercedes-Benz S-Class 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 $1,860 for the Cadillac CT6 and $2,037 for the Mercedes-Benz S-Class Plug-in Hybrid.
Which has more cargo space?
The Cadillac CT6, with 15 cu ft of luggage volume versus 9 cu ft (EPA interior volume index).
Cadillac CT6 vs Mercedes-Benz S-Class Plug-in Hybrid in other years
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