45/100

2021Midsize CarsPremium

2021 Cadillac CT5

EPA ID: 43257

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City MPG

Combined MPG

26MPG· Average

Highway MPG

Fuel Economy Overview

The 2021 Cadillac CT5 achieves an EPA-estimated 26 MPG in combined city and highway driving, with 23 MPG in the city and 32 MPG on the highway. Powered by a 2L 4-cylinder turbocharged engine paired with a automatic (s10), this midsize cars features Rear-Wheel Drive drive.

In terms of environmental impact, the 2021 CT5 produces approximately 337 grams of CO2 per mile. This figure is measured under standardized EPA test conditions and represents tailpipe emissions only. For context, the average new vehicle sold in the United States produces approximately 400 grams of CO2 per mile, meaning this CT5 performs better than the national average in this regard.

The estimated annual fuel cost for this vehicle is $2,650, based on 15,000 miles of driving per year and current national average fuel prices. Compared to the average new vehicle, you would save $2,500 over a 5-year period. This calculation accounts for differences in fuel consumption efficiency and provides a practical measure of long-term ownership costs attributable to fuel economy.

Energy DNA

Vehicle ClassMidsize Cars

Fuel TypePremium

Engine2L 4-cyl

AspirationTurbocharged

TransmissionAutomatic (S10)

Drive TypeRear-Wheel Drive

Green Scorecard

CO2 Emissions337 g/mi

Start-Stop SystemEquipped

GHG Score5/10

Smog RatingN/A

Est. Annual Cost$2,650

5-Year Cost DeltaSave $2,500

Personalized Commute CalculatorEPA defaults to 55% City / 45% Hwy

55% City45% Highway

Adjust the slider to match your daily driving habits. City driving involves stop-and-go traffic under 45mph, while highway driving represents sustained speeds over 55mph.

Your Real MPG

26.3

Impact vs EPA

$-26

/ year

💨

Aerodynamic Speed Penalty

EPA highway tests average roughly 48 mph. Driving at 75 mph increases aerodynamic drag exponentially. Expect your real-world highway fuel economy to drop by roughly 15-20% at interstate speeds.

5-Year Total Cost of Ownership

Estimated Monthly Cost

$729/mo

Includes estimated depreciation, fuel, insurance, and state fees over 5 years. Does not include loan interest.

Annual Mileage15,000 mi

Value Depreciation

Est. value lost over 60 months

$22,400

51.2%

Fuel & Electricity

Based on National Average rates ($3.50/gal)

$10,096

23.1%

Estimated Insurance

Based on vehicle class risk profile

$10,840

24.8%

State Registration Fees

Based on National Average DMV base rates

$400

0.9%

Total 5-Year Cost$43,736

Recall Intelligence

Campaign #25V148000·2025-04-07

critical

Component: 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.

Consequence & Remedy

Consequence: Wheel lock-up while driving increases the risk of a crash.

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 1-800-222-1020. GM's number for this recall is N242480630.

Campaign #22V903000·2023-01-23

critical

Component: 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 are on. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

Consequence & Remedy

Consequence: DRLs that do not deactivate as intended may result in a glare, reducing visibility, and increasing the risk of a crash.

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 1-888-988-7267, Chevrolet customer service at 1-800-222-1020, or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N222386380. This recall expands previous recall number 22V-827.

Campaign #21V611000·2021-08-30

critical

Component: AIR BAGS:SIDE/WINDOW:CURTAIN

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.

Consequence & Remedy

Consequence: Air bags that do not deploy properly can increase the risk of injury in 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 service at 1-800-458-8006. GM's number for this recall is N212342780.

Campaign #21V421000·2021-07-01

moderate

Component: AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT

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 malfunction indicator light to inconsistently illuminate.

Consequence & Remedy

(Based on 200,000 miles driven)

67.4 metric tons CO₂

Equivalent To:

🌳 83 tree seedlings grown for 10 yrs

✈️ 5.6 cross-country flights/yr

Data Provenance

Data directly from the EPA National Vehicle and Fuel Emissions Laboratory. The combined rating is a weighted average (55% city, 45% highway). For official figures, visit fueleconomy.gov.