Cadillac CT6 MPG by Year & Engine (EPA)
EPA fuel-economy ratings for every rated Cadillac CT6 model year from 2016 to 2020 — each engine and transmission with its official city, highway and combined figures. Over these years the CT6 has been offered with 3.6L 6-cyl, 4.2L 8-cyl, 2.0L 4-cyl, 3.0L 6-cyl engines; the most efficient version is the 2019 (up to 28 MPG combined). Data: U.S. Department of Energy & EPA, fueleconomy.gov; prices are live medians from VehiSales listings.
Cadillac CT6 fuel economy by year
| Year | Combined | Engines | Median used price | For sale |
|---|---|---|---|---|
| 2020 | 17–21 MPG | 3.6L 6-cyl, 4.2L 8-cyl | $30,595 | 10 listings |
| 2019 | 17–28 MPG | 2.0L 4-cyl, 3.6L 6-cyl, 3.0L 6-cyl, 4.2L 8-cyl | $29,898 | 39 listings |
| 2018 | 21–25 MPG | 2.0L 4-cyl, 3.6L 6-cyl, 3.0L 6-cyl | $22,248 | 52 listings |
| 2017 | 21–26 MPG | 2.0L 4-cyl, 3.6L 6-cyl, 3.0L 6-cyl | $19,995 | 108 listings |
| 2016 | 21–25 MPG | 2.0L 4-cyl, 3.6L 6-cyl, 3.0L 6-cyl | $17,295 | 38 listings |
2020 Cadillac CT6: engines & MPG
The 2020 CT6 was EPA-rated in 2 versions (3.6L 6-cyl, 4.2L 8-cyl), with combined economy from 17 to 21 MPG. Used 2020 models currently list for a median of $30,595 on VehiSales (10 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| CT6 AWD | 3.6L 6-cyl | Automatic (S10) | Regular | 18 | 27 | 21 MPG |
| CT6 AWD | 4.2L 8-cyl | Automatic (S10) | Premium | 14 | 25 | 17 MPG |
2019 Cadillac CT6: engines & MPG
The 2019 CT6 was EPA-rated in 4 versions (2.0L 4-cyl, 3.6L 6-cyl, 3.0L 6-cyl, 4.2L 8-cyl), with combined economy from 17 to 28 MPG. Used 2019 models currently list for a median of $29,898 on VehiSales (39 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| CT6 | 2.0L 4-cyl | Automatic (S10) | Premium | 24 | 34 | 28 MPG |
| CT6 AWD | 3.6L 6-cyl | Automatic (S10) | Regular | 18 | 27 | 21 MPG |
| CT6 AWD | 3.0L 6-cyl | Automatic (S10) | Premium | 18 | 26 | 21 MPG |
| CT6 AWD | 4.2L 8-cyl | Automatic (S10) | Premium | 14 | 25 | 17 MPG |
2018 Cadillac CT6: engines & MPG
The 2018 CT6 was EPA-rated in 4 versions (2.0L 4-cyl, 3.6L 6-cyl, 3.0L 6-cyl), with combined economy from 21 to 25 MPG. Used 2018 models currently list for a median of $22,248 on VehiSales (52 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| CT6 Plug-In | 2.0L 4-cyl | Automatic (variable gear ratios) | Premium | 23 | 29 | 25 MPG · 39 MPGe on electricity · 430 mi range |
| CT6 | 2.0L 4-cyl | Automatic (S8) | Premium | 22 | 30 | 25 MPG |
| CT6 AWD | 3.6L 6-cyl | Automatic (S8) | Regular | 18 | 27 | 21 MPG |
| CT6 AWD | 3.0L 6-cyl | Automatic (S8) | Premium | 18 | 26 | 21 MPG |
2017 Cadillac CT6: engines & MPG
The 2017 CT6 was EPA-rated in 4 versions (2.0L 4-cyl, 3.6L 6-cyl, 3.0L 6-cyl), with combined economy from 21 to 26 MPG. Used 2017 models currently list for a median of $19,995 on VehiSales (108 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| CT6 Plug-In | 2.0L 4-cyl | Automatic (variable gear ratios) | Premium | 23 | 29 | 26 MPG · 39 MPGe on electricity · 440 mi range |
| CT6 | 2.0L 4-cyl | Automatic (S8) | Premium | 22 | 30 | 25 MPG |
| CT6 AWD | 3.6L 6-cyl | Automatic (S8) | Regular | 18 | 27 | 21 MPG |
| CT6 AWD | 3.0L 6-cyl | Automatic (S8) | Premium | 18 | 26 | 21 MPG |
2016 Cadillac CT6: engines & MPG
The 2016 CT6 was EPA-rated in 3 versions (2.0L 4-cyl, 3.6L 6-cyl, 3.0L 6-cyl), with combined economy from 21 to 25 MPG. Used 2016 models currently list for a median of $17,295 on VehiSales (38 for sale).
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| CT6 | 2.0L 4-cyl | Automatic (S8) | Regular | 22 | 30 | 25 MPG |
| CT6 AWD | 3.6L 6-cyl | Automatic (S8) | Regular | 18 | 27 | 21 MPG |
| CT6 AWD | 3.0L 6-cyl | Automatic (S8) | Premium | 18 | 26 | 21 MPG |
Frequently asked questions
What MPG does a Cadillac CT6 get?
Depending on year and engine, EPA combined ratings for the CT6 range from 21 to 28 MPG. The most efficient rated version is the 2019 model year.
What engines does the 2020 Cadillac CT6 have?
The 2020 CT6 was EPA-rated with 3.6L 6-cyl, 4.2L 8-cyl engines — see the 2020 table above for each version's exact city/highway figures.
Does the Cadillac CT6 require premium gas?
Some versions do: EPA lists regular gasoline and premium gasoline depending on year and engine — check your year's table above.
Is there a hybrid or electric CT6?
Yes — the ratings above include hybrid versions; look for them in the per-year tables.
https://vehisales.com/research/fuel-economy/cadillac/ct6.
See also: Cadillac CT6 hub — live listings, prices & reliability · Used Cadillac CT6 prices by year · Most fuel-efficient cars by segment · Model price trends. Media inquiries: [email protected].