Cadillac CT6 MPG by year — every rating on record
The Cadillac CT6 has a combined EPA fuel economy rating for 5 model years, from 2016 to 2020. Across those years its best rated version returned 28 mpg (2019) and its thirstiest returned 17 mpg (2019). The EPA record holds 15 configurations for this nameplate, most recently a Large Cars.
Year-by-year EPA ratings
| Model year | Configurations | Best combined | Worst combined | Class rank that year | Drivetrains | Fuel | EPA class |
|---|---|---|---|---|---|---|---|
| 2016 | 3 | 25 mpg | 21 mpg | #24 of 72 (68th pct) | Rear-Wheel Drive, All-Wheel Drive | Regular, Premium | Large Cars |
| 2017 | 3 | 25 mpg | 21 mpg | #24 of 74 (68th pct) | All-Wheel Drive, Rear-Wheel Drive | Regular, Premium | Large Cars |
| 2018 | 3 | 25 mpg | 21 mpg | #24 of 77 (70th pct) | All-Wheel Drive, Rear-Wheel Drive | Premium, Regular | Large Cars |
| 2019 | 4 | 28 mpg | 17 mpg | #17 of 80 (80th pct) | All-Wheel Drive, Rear-Wheel Drive | Regular, Premium | Large Cars |
| 2020 | 2 | 21 mpg | 17 mpg | #43 of 78 (45th pct) | All-Wheel Drive | Regular, Premium | Large Cars |
Where it has stood in its class
Ranked against every other nameplate the EPA filed under the same class that year. The Cadillac CT6 placed highest in 2019 at #17 of 80, and lowest in 2020 at #43 of 78. It spent 4 of its 5 ranked years in the top half of its class.
Every configuration on record
All 15 configurations EPA lists for this nameplate, newest first.
| Year | Configuration | Engine detail | City | Highway | Combined | Gallons/yr | Barrels/yr | EPA fuel cost/yr | CO2 g/mi | GHG |
|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 4.2L 8-cyl All-Wheel Drive Automatic (S10) Premium | SIDI, turbocharged, start-stop | 14 | 25 | 17 | 676.5 | 17.5 | $4,550 | 521 | 3/10 |
| 2020 | 3.6L 6-cyl All-Wheel Drive Automatic (S10) Regular | SIDI, start-stop | 18 | 27 | 21 | 547.6 | 14.2 | $2,950 | 420 | 4/10 |
| 2019 | 4.2L 8-cyl All-Wheel Drive Automatic (S10) Premium | SIDI, turbocharged, start-stop | 14 | 25 | 17 | 676.5 | 17.5 | $4,550 | 521 | 3/10 |
| 2019 | 3.6L 6-cyl All-Wheel Drive Automatic (S10) Regular | SIDI, start-stop | 18 | 27 | 21 | 547.6 | 14.2 | $2,950 | 420 | 4/10 |
| 2019 | 3.0L 6-cyl All-Wheel Drive Automatic (S10) Premium | SIDI, turbocharged | 18 | 26 | 21 | 547.6 | 14.2 | $3,700 | 429 | 4/10 |
| 2019 | 2.0L 4-cyl Rear-Wheel Drive Automatic (S10) Premium | SIDI, turbocharged | 24 | 34 | 28 | 410.7 | 10.6 | $2,750 | 317 | 6/10 |
| 2018 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 18 | 26 | 21 | 547.6 | 14.2 | $3,700 | 424 | 4/10 |
| 2018 | 3.6L 6-cyl All-Wheel Drive Automatic (S8) Regular | SIDI, start-stop | 18 | 27 | 21 | 547.6 | 14.2 | $2,950 | 416 | 4/10 |
| 2018 | 2.0L 4-cyl Rear-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged, start-stop | 22 | 30 | 25 | 460.0 | 11.9 | $3,100 | 360 | 5/10 |
| 2017 | 3.6L 6-cyl All-Wheel Drive Automatic (S8) Regular | SIDI, start-stop | 18 | 27 | 21 | 547.6 | 14.2 | $2,950 | 417 | 4/10 |
| 2017 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged | 18 | 26 | 21 | 547.6 | 14.2 | $3,700 | 424 | 4/10 |
| 2017 | 2.0L 4-cyl Rear-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged | 22 | 30 | 25 | 460.0 | 11.9 | $3,100 | 359 | 5/10 |
| 2016 | 3.0L 6-cyl All-Wheel Drive Automatic (S8) Premium | SIDI, turbocharged | 18 | 26 | 21 | 547.6 | 14.2 | $3,700 | 424 | 5/10 |
| 2016 | 3.6L 6-cyl All-Wheel Drive Automatic (S8) Regular | SIDI | 18 | 27 | 21 | 547.6 | 14.2 | $2,950 | 414 | 5/10 |
| 2016 | 2.0L 4-cyl Rear-Wheel Drive Automatic (S8) Regular | SIDI, turbocharged | 22 | 30 | 25 | 460.0 | 11.9 | $2,500 | 357 | 6/10 |
How the rating has moved between model years
Comparing the best-rated configuration of each year. 1 of 2 year-over-year steps improved the top rating.
| Change | Best combined | Delta | Gallons a year at the newer rating |
|---|---|---|---|
| 2018 → 2019 | 25 → 28 mpg | +3 mpg | 411 gal |
| 2019 → 2020 | 28 → 21 mpg | -7 mpg | 548 gal |
What CT6 fuel costs over a year
At the EPA's 11,500 miles a year, the 2020 Cadillac CT6 burns 548 to 676 gallons depending on configuration. Below is what that costs at three pump prices, and how much more the thirstiest configuration costs than the most efficient one.
| Pump price | Most efficient | Thirstiest | Spread |
|---|---|---|---|
| $3.00/gal | $1,643 | $2,029 | $387 |
| $3.50/gal | $1,917 | $2,368 | $451 |
| $4.00/gal | $2,190 | $2,706 | $515 |
EPA’s own estimate for the 2020 model year is $2,950 to $4,550 a year in fuel, or $3,500 more than the average new vehicle over five years.
How it compares with other Large Cars
Across the 305 nameplates EPA classifies as Large Cars, the median best combined rating is 21 mpg. At 21 mpg the Cadillac CT6 is exactly at the median.
- All Large Cars rankings — every nameplate in the class, best to worst.
Other Cadillac nameplates
Every Cadillac model compared → — all nameplates ranked by best combined rating, with what each one costs a year.