2020 Cadillac CT6
US · Large Cars
The 2020 Cadillac CT6 is listed in the US market with gasoline power. Every figure below carries the source it came from, and anything our sources do not publish is left out rather than estimated.
- Engine
- Varies by configuration: 3.6L 6-cylinder (SIDI), 4.2L 8-cylinder turbocharged (SIDI)
- Transmission
- 10-speed automatic
- Drivetrain
- AWD
- Fuel
- Gasoline
- Economy
- 17 mpg (13.8 L/100 km) to 21 mpg (11.2 L/100 km) combined
Key Figures
Engine
| Specification | Value | Source |
|---|---|---|
| Engine | Varies by configuration: 3.6L 6-cylinder (SIDI), 4.2L 8-cylinder turbocharged (SIDI) | |
| Displacement | 3.6 L to 4.2 L | |
| Cylinders | 6 to 8 | |
| Aspiration | Turbocharged | |
| Fuel type | Gasoline | EPA fueleconomy.gov |
Transmission and drivetrain
| Specification | Value | Source |
|---|---|---|
| Transmission | Automatic | EPA fueleconomy.gov |
| Gears | 10 | |
| Drivetrain | AWD | EPA fueleconomy.gov |
Fuel economy and range
| Specification | Value | Source |
|---|---|---|
| Combined | 17 mpg (13.8 L/100 km) to 21 mpg (11.2 L/100 km) | EPA fueleconomy.gov |
| City | 14 mpg (16.8 L/100 km) to 18 mpg (13.1 L/100 km) | |
| Highway | 25 mpg (9.4 L/100 km) to 27 mpg (8.7 L/100 km) |
Our sources do not publish these for this vehicle: Power, Torque, Electric range, Battery capacity. We leave them out instead of estimating.
Trims and configurations
2 configurations listed by our sources. Engines, drivetrains and fuel economy can differ between them.
Recalls
NHTSA lists 2 recall campaigns for this model year. Last checked November 8, 2026.
25V148000: POWER TRAIN:AUTOMATIC TRANSMISSION
General Motors LLC (GM) is recalling certain 2019-2020 Cadillac CT6, 2020-2021 CT4, CT5, and 2020-2022 Chevrolet Camaro vehicles equipped with a 10-speed transmission. The transmission may become damaged internally and cause the wheels to lock-up.
Remedy: Dealers will install transmission control module monitoring software, free of charge. Owner notification letters were mailed April 7, 2025. Owners may contact Cadillac customer service at 1-800-333-4223 or Chevrolet customer service at…
Reported March 6, 2025. View on NHTSA
19V731000: TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS
General Motors LLC (GM) is recalling certain 2020 Cadillac CT6 vehicles equipped with dealer-installed accessory 20" x 8.50" wheels (RPO 5JO or SHH). The tire pressure monitoring system (TPMS) sensors use the incorrect wireless radio frequency and cannot illuminate the low pressure warning light when the tire pressure drops below the recommended level. As such, these vehicles fail to comply…
Remedy: GM will notify owners, and dealers will replace all four TPMS sensors with the correct sensors, free of charge. The recall began December 3, 2019. Owners may contact GM customer service at 1-586-596-1733. GM's number for this recall is…
Reported October 15, 2019. View on NHTSA
Data sources
- EPA fueleconomy.gov · retrieved November 4, 2026 · US Government public data
- NHTSA vPIC · retrieved October 12, 2026 · US Government public data
Source checked: November 4, 2026
Data verified: November 4, 2026
Specifications can vary by market, trim, configuration and production date. Confirm with the manufacturer before buying parts or making safety decisions. Report an error.
Related vehicles
- 2019 Cadillac CT6
Gasoline
Varies by configuration: 3.6L 6-cylinder (SIDI), 3.0L 6-cylinder turbocharged (SIDI), 2.0L 4-cylinder turbocharged (SIDI), 4.2L 8-cylinder turbocharged (SIDI) · Varies by configuration: AWD, RWD
28 mpg (8.4 L/100 km) to 17 mpg (13.8 L/100 km)
Frequently asked questions
What engine does the 2020 Cadillac CT6 have?
Varies by configuration: 3.6L 6-cylinder (SIDI), 4.2L 8-cylinder turbocharged (SIDI). Engines can differ by trim, so check the trim list below.
What is the fuel economy of the 2020 Cadillac CT6?
Combined fuel economy is 17 mpg (13.8 L/100 km) to 21 mpg (11.2 L/100 km), as published by the source shown in the specification table.
Is the 2020 Cadillac CT6 front-wheel, rear-wheel or all-wheel drive?
Drivetrain: AWD.
Are there recalls for the 2020 Cadillac CT6?
NHTSA lists 2 recall campaigns for this model year (last checked November 8, 2026). Details are in the Recalls section.