Cadillac
CT6 AWD
U.S. fuel economy and specifications from the EPA.

21Best combined MPG2016 model year
2016–2020Model years5 with EPA ratings
11Rated configurationsDrive, transmission and engine
3–4.2 LEngine sizeDisplacement
Best combined MPG by model year
The highest EPA rating among each year's configurations.
2016 21 MPG
2017 21 MPG
2018 21 MPG
2019 21 MPG
2020 21 MPG
2 configurations.
All-Wheel Drive · Automatic (S10)
Regular gasoline · Large Cars
- Combined MPG
- 21
- Engine displacement
- 3.6 L
- Cylinders
- 6
All-Wheel Drive · Automatic (S10)
Premium gasoline · Large Cars
- Combined MPG
- 17
- Engine displacement
- 4.2 L
- Cylinders
- 8
All-Wheel Drive · Automatic (S10)
Regular gasoline · Large Cars
- Combined MPG
- 21
- Engine displacement
- 3.6 L
- Cylinders
- 6
All-Wheel Drive · Automatic (S10)
Premium gasoline · Large Cars
- Combined MPG
- 21
- Engine displacement
- 3.0 L
- Cylinders
- 6
All-Wheel Drive · Automatic (S10)
Premium gasoline · Large Cars
- Combined MPG
- 17
- Engine displacement
- 4.2 L
- Cylinders
- 8
All-Wheel Drive · Automatic (S8)
Premium gasoline · Large Cars
- Combined MPG
- 21
- Engine displacement
- 3.0 L
- Cylinders
- 6
All-Wheel Drive · Automatic (S8)
Regular gasoline · Large Cars
- Combined MPG
- 21
- Engine displacement
- 3.6 L
- Cylinders
- 6
All-Wheel Drive · Automatic (S8)
Regular gasoline · Large Cars
- Combined MPG
- 21
- Engine displacement
- 3.6 L
- Cylinders
- 6
All-Wheel Drive · Automatic (S8)
Premium gasoline · Large Cars
- Combined MPG
- 21
- Engine displacement
- 3.0 L
- Cylinders
- 6
All-Wheel Drive · Automatic (S8)
Premium gasoline · Large Cars
- Combined MPG
- 21
- Engine displacement
- 3.0 L
- Cylinders
- 6
All-Wheel Drive · Automatic (S8)
Regular gasoline · Large Cars
- Combined MPG
- 21
- Engine displacement
- 3.6 L
- Cylinders
- 6