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Cadillac CT4Model year report

2021 Cadillac CT4 Problems

Complaints
7filed with NHTSA
Median mileage
—no mileage reported
Recalls
4campaigns on record
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA crash rating
—no overall rating published
EPA fuel economy
25 mpgcombined, 2.7L 4-cyl RWD · 21 city / 31 hwy

Sources: NHTSA records for the 2021 Cadillac CT4 (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 7 consumer complaints for the 2021 Cadillac CT4. The part named most often is engine, with 3 complaints (43% of the total), followed by fuel system (2) and electrical system (1). NHTSA lists 4 recall campaigns and 814 technical service bulletins for this model year. Engine complaints overlap with 64 technical service bulletins filed under the same part. Fuel system complaints overlap with 26 technical service bulletins filed under the same part.

This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Example complaints

Engine: “valve body failed and was supposedly repaired. I had the car 1 day and valve body failed again. My car has been in the shop since November 4, 2024 with no estimated time of repair because no parts are available. I was told they would replace the transmission. That has not happened yet. No parts available. My car has been disable for 6 months.”

NHTSA complaint #11655109, filed 2025-04

Fuel system: “While driving at highway speeds on the freeway in my 2021 Cadillac CT4-V, the vehicle experienced a sudden, catastrophic loss of propulsion. Without warning, the transmission dropped out of gear as if it were in neutral. I completely lost the ability to accelerate, creating an immediate, life-threatening hazard as I was left stranded and blocking high-speed freeway traffic. Only after the mechanical failure occurred did the check engine light illuminate. The vehicle was towed to Cadillac Dealership. …”

NHTSA complaint #11747192, filed 2026-06

Electrical system: “While driving the power steering was lost. The the auto hold function lit up. The collision warning light lit up. The stabilitrak system lit up. The air bag safety system lit up. Steering became very hard and made for y safe driving. Later that day 01-22-24, all warning light went out and power steering was normal.”

NHTSA complaint #11567425, filed 2024-01

Complaints by year filed

Fewer than 15 complaints, too few for a reliable trend.

2022202422025220262
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Fuel economy and running cost

EPA ratings for each 2021 Cadillac CT4 version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
CT4 RWD2.0L 4-cyl8-speed automatic233427$3,050
CT4 RWD2.7L 4-cyl10-speed automatic213125$3,300
CT4 AWD2.0L 4-cyl8-speed automatic233226$3,150
CT4 AWD2.7L 4-cyl10-speed automatic212924$3,400
CT4 V RWD2.7L 4-cyl10-speed automatic202923$3,550
CT4 V AWD2.7L 4-cyl10-speed automatic202823$3,550

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 2021 Cadillac CT4 → · Check a VIN at nhtsa.gov/recalls

NHTSA investigations

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 814 on record; the latest 10 are shown.

See all 814 bulletins →

Other model years of the Cadillac CT4

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
2024745,2520—23—Too new
202269,0002—23—Not enough data
20217—4—25—Not enough data
2020824,0004—24—Not enough data

All Cadillac CT4 model years

Frequently asked questions

How many NHTSA complaints does the 2021 Cadillac CT4 have?

NHTSA recorded 7 consumer complaints for the 2021 Cadillac CT4 as of Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2021 Cadillac CT4 is reported most often?

Engine is named most often, in 3 complaints (43% of the total), followed by fuel system with 2.

Has the 2021 Cadillac CT4 been recalled?

NHTSA lists 4 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 2021 Cadillac CT4 get?

The EPA rates the 2021 Cadillac CT4 (CT4, 2.7L 4-cyl) at 25 mpg combined, 21 city and 31 highway, with an estimated annual fuel cost of $3,300 at 15,000 miles a year. Other engine and drive versions are rated differently.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.