Cadillac · model year 2021
2021 Cadillac CT4
Specifications and certified data for the 2021 model year. All Cadillac CT4 model years →
2021 US EPA fuel-economy records
| Year | Engine | Drive | Transmission | Fuel | MPG (US) comb. | CO₂ g/mi | EV range mi | Source |
|---|---|---|---|---|---|---|---|---|
| 2021 | 2.0 L 4-cyl | Rear-Wheel Drive | Automatic (S8) | Premium | 27 | 327 | — | EPA ↗ |
| 2021 | 2.0 L 4-cyl | All-Wheel Drive | Automatic (S8) | Premium | 26 | 343 | — | EPA ↗ |
| 2021 | 2.7 L 4-cyl | Rear-Wheel Drive | Automatic (S10) | Premium | 25 | 356 | — | EPA ↗ |
| 2021 | 2.7 L 4-cyl | Rear-Wheel Drive | Automatic (S10) | Premium | 23 | 384 | — | EPA ↗ |
| 2021 | 2.7 L 4-cyl | All-Wheel Drive | Automatic (S10) | Premium | 24 | 374 | — | EPA ↗ |
| 2021 | 2.7 L 4-cyl | All-Wheel Drive | Automatic (S10) | Premium | 23 | 385 | — | EPA ↗ |
US EPA test figures (US MPG, US test cycle), fueleconomy.gov ↗, US government public domain.
US safety recalls
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25V148000 2025-03-06 · model years 2020, 2021
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…
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22V903000 2022-12-08 · model years 2020, 2021, 2022, 2023
EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
General Motors, LLC (GM) is recalling certain 2020-2023 Cadillac CT4 and CT5; 2021-2023 Buick Envision; and 2022-2023 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles. The daytime running lights (DRLs) may not deactivate when the headlights…
Remedy: The body control module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed January 23, 2023. Owners may contact GMC customer service at…
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21V611000 2021-08-05 · model years 2020, 2021, 2022
AIR BAGS
General Motors, LLC. (GM) is recalling certain 2020-2022 Cadillac CT4 and CT5 vehicles. The roof rail side-curtain air bags may not have been installed correctly, which could result in an improper air bag deployment during a crash.
Remedy: Dealers will inspect both left and right-side roof rail air bags and reinstall the air bags, as necessary, free of charge. Owner notification letters were mailed on August 30, 2021. Owners may contact Cadillac customer…
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21V421000 2021-06-10 · model years 2021
ELECTRICAL SYSTEM:SOFTWARE
General Motors, LLC (GM) is recalling certain 2021 Buick Envision, Cadillac CT4, CT5, Escalade, Escalade ESV, Chevrolet Tahoe, Corvette, Suburban, GMC Yukon, Yukon XL vehicles. The communications gateway module incorrectly processes a loss of communication with the sensing diagnostic module (SDM), causing the air bag…
Remedy: The communications gateway module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed on July 1, 2021. Owners may contact Buick customer…
NHTSA recalls database (US government, public domain). Recalls apply to US-market vehicles; check the manufacturer for your country.
Generation in 2021
Sources
- US EPA / DOE FuelEconomy.gov — https://www.fueleconomy.gov/feg/ws/index.shtmlUS Government public domain
- NHTSA recalls database — https://www.nhtsa.gov/recallsUS Government public domain
- Car Model Index — https://models.autoculturesociety.com/Compiled record. Sources that do not permit reuse are not copied; this index is credited instead.