2017 head-to-head · Midsize Car
2017 Acura RLX Hybrid 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.
AWD · 3.5L 6-cyl · 7-speed dual-clutch · 29 MPG
RWD · 2.0L 4-cyl turbo · CVT · 62 MPGe + 26 MPG
The 2017 Cadillac CT6 Plug-in Hybrid 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 $1,793 a year to fuel (62 MPGe + 26 MPG), versus $2,043 for the 2017 Acura RLX Hybrid (29 MPG). That's roughly $250 a year, or about $1,251 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
- Acura RLX Hybrid
- Cadillac CT6 Plug-in Hybrid
Side by side
| Acura RLX Hybrid | Cadillac CT6 Plug-in Hybrid | |
|---|---|---|
| $2,043 | Your annual fuel cost | $1,793 |
| 29 MPG | Combined efficiency | 62 MPGe + 26 MPG |
| 29 MPG | City | 56 MPGe / 23 MPG |
| 30 MPG | Highway | 71 MPGe / 29 MPG |
| — | Electricity use (kWh/100 mi) | 54 kWh |
| — | Driving range | 440 mi |
| — | All-electric range | 31 mi |
| 102 cu ft | Passenger volume | 106 cu ft |
| 15 cu ft | Cargo volume | 10 cu ft |
| 306 g/mi | Tailpipe CO₂ (g/mi) | 144 g/mi |
| 7/10 | EPA fuel economy score | 9/10 |
| 7/10 | EPA greenhouse gas score | 10/10 |
| — | Charge time at 240V | 4.5 hrs |
| Hybrid | Powertrain | Plug-in hybrid |
| Premium gasoline | Fuel | Premium gas + electricity |
| 3.5L 6-cyl | Engine / motor | 2.0L 4-cyl turbo |
| 7-speed dual-clutch | 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.
Acura RLX Hybrid vs Cadillac CT6 Plug-in Hybrid across model years
- Acura RLX Hybrid
- 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 Plug-in Hybrid has more passenger space (106 vs. 102 cu ft); the Acura RLX Hybrid has more cargo space (15 vs. 10 cu ft).
Among 67 2017 midsize cars, the Acura RLX Hybrid ranks 44th and the Cadillac CT6 Plug-in Hybrid 34th for lowest fuel cost.
The powertrains differ: the Acura RLX Hybrid is a full hybrid, while the Cadillac CT6 Plug-in Hybrid is a plug-in hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2017 Acura RLX Hybrid or the 2017 Cadillac CT6 Plug-in Hybrid?
Measured by cost to drive, the Cadillac CT6 Plug-in Hybrid. The Acura RLX Hybrid is rated 29 MPG combined and the Cadillac CT6 Plug-in Hybrid 62 MPGe + 26 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2017 Acura RLX Hybrid vs. the Cadillac CT6 Plug-in Hybrid per year?
At 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, about $2,043 for the Acura RLX Hybrid and $1,793 for the Cadillac CT6 Plug-in Hybrid.
Which has more cargo space?
The Acura RLX Hybrid, with 15 cu ft of luggage volume versus 10 cu ft (EPA interior volume index).
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