Cadillac CT6 Vehicle Class & EPA Size Category

The EPA classifies the 2020 Cadillac CT6 as a Large Cars / Midsize Cars, a rating based on body style and interior volume.

Latest model year (2020):

The Cadillac CT6 is classified by the EPA as a Large Cars.

Verifiedfueleconomy.gov · Verified August 9, 2026

Cadillac CT6 Vehicle Class — All Years

YearTrimVehicle ClassDriveFuel TypeMPG Comb.
2020Auto (S10), 6 cyl, 3.6 LLarge CarsAll-Wheel DriveRegular Gasoline21
2020Auto (S10), 8 cyl, 4.2 LLarge CarsAll-Wheel DrivePremium Gasoline17
2019Auto (S10), 4 cyl, 2.0 LLarge CarsRear-Wheel DrivePremium Gasoline28
2019Auto (S10), 6 cyl, 3.0 LLarge CarsAll-Wheel DrivePremium Gasoline21
2019Auto (S10), 6 cyl, 3.6 LLarge CarsAll-Wheel DriveRegular Gasoline21
2019Auto (S10), 8 cyl, 4.2 LLarge CarsAll-Wheel DrivePremium Gasoline17
2018Auto (S8), 4 cyl, 2.0 LLarge CarsRear-Wheel DrivePremium Gasoline25
2018Auto (S8), 6 cyl, 3.0 LLarge CarsAll-Wheel DrivePremium Gasoline21
2018Auto (S8), 6 cyl, 3.6 LLarge CarsAll-Wheel DriveRegular Gasoline21
2018Auto (variable gear ratios), 4 cyl, 2.0 LMidsize CarsRear-Wheel DrivePremium Gasoline25
2017Auto (S8), 4 cyl, 2.0 LLarge CarsRear-Wheel DrivePremium Gasoline25
2017Auto (S8), 6 cyl, 3.0 LLarge CarsAll-Wheel DrivePremium Gasoline21
2017Auto (S8), 6 cyl, 3.6 LLarge CarsAll-Wheel DriveRegular Gasoline21
2017Auto (variable gear ratios), 4 cyl, 2.0 LMidsize CarsRear-Wheel DrivePremium Gasoline26
2016Auto (S8), 4 cyl, 2.0 LLarge CarsRear-Wheel DriveRegular Gasoline25
2016Auto (S8), 6 cyl, 3.0 LLarge CarsAll-Wheel DrivePremium Gasoline21
2016Auto (S8), 6 cyl, 3.6 LLarge CarsAll-Wheel DriveRegular Gasoline21

Data sourced from fueleconomy.gov (U.S. Department of Energy). MPG figures are EPA-tested. Fuel costs are estimates based on average fuel prices and 15,000 miles/year.

Cadillac CT6 Vehicle Class FAQ

What class of vehicle is the Cadillac CT6?

The EPA classifies the Cadillac CT6 as a Large Cars / Midsize Cars. This classification is based on interior volume and body style and affects how its fuel economy is compared with other vehicles.

Is the Cadillac CT6 considered a small or large vehicle?

Based on its EPA class (Large Cars, Midsize Cars), the Cadillac CT6 is grouped with vehicles of similar size and interior volume. The class can change between model years when the body is redesigned.

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