2021 Cadillac XT6 Problems
- Complaints
- 21filed with NHTSA
- Median mileage
- 31,500miles, 4 complaints with mileage
- Recalls
- 2campaigns on record
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
- NHTSA crash rating
- 5 / 5stars overall, 2 rated versions
- EPA fuel economy
- 23 mpgcombined, 2.0L 4-cyl FWD · 21 city / 27 hwy
Sources: NHTSA records for the 2021 Cadillac XT6 (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error
NHTSA recorded 21 consumer complaints for the 2021 Cadillac XT6. The part named most often is electrical system, with 5 complaints (24% of the total), followed by engine (5) and back-over prevention (4). 4 of the complaints include a mileage, and 100% of those were filed for vehicles with under 50,000 miles; the median is 31,500 miles. NHTSA lists 2 recall campaigns and 815 technical service bulletins for this model year. Electrical system complaints overlap with 197 technical service bulletins filed under the same part. Engine complaints overlap with 80 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.
- Electrical system5 24%
- Engine5 24%
- Fuel system4 19%
- Other or unknown3 14%
- Steering3 14%
- Brakes1 4.8%
- Engine cooling1 4.8%
Example complaints
Electrical system: “The vehicle was previously recalled for an intermittent backup camera failure. Prior to me purchasing the vehicle, the recall was completed and documented as repaired. I went in to the Myrtle Beach Cadillac dealership for reoccurring issues with the camera failing exactly as disclosed in the recall. It will randomly cut to a black screen with a camera icon crossed out in red. It is a true safety issue that leaves my family as risk of a collision or injuring someone else.It cannot be recreated on request as it is happening intermittently. …”
NHTSA complaint #11708732, filed 2026-01Engine: “I noticed a water sloshing sound behind the dash when first starting out for about a month. I didn’t get any warning lights or notice anything leaking under the car but when I checked under the hood the coolant reservoir was empty. I made appointment at GM dealership and they found I had a leak along the side seam of my radiator. The car only has 61k miles! I found online that GM has noted a structural design issue in my XT6. The radiators were engineered with tight thermal break tabs. …”
NHTSA complaint #11772504, filed 2026-10Back-over prevention (rear camera): “In April 2023 I was backing out of a parking space when a message displayed on the dash that “The Parking Assist Have Been Blocked, See Owner’s Manual “. In this event there were pedestrians walking behind my vehicle and if not for my cautions always while backing could have caused an accident. This has since been intermittently happening and I have taken it in to the dealer 2 times without repair.”
NHTSA complaint #11542986, filed 2023-09Fuel system: “Your site shows no recalls. I got a recall for a repair I had to have done a few months ago. I just got the recall notice from GM, but when I called to inquire about a reimbursement, they state the recall was released in 10/2025. Even though your site says there was no recall at the time.”
NHTSA complaint #11747724, filed 2026-07Mileage when problems were reported
100% of the 4 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 30,000 and 33,000 miles.
Complaints by year filed
Trend: rising. Complaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
Crash test ratings
NHTSA's 5-Star Safety Ratings for the 2021 Cadillac XT6. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.
| Version | Overall | Frontal | Side | Side pole | Rollover |
|---|---|---|---|---|---|
| XT6 · SUV AWD | ★★★★★ | 5 / 5 | 5 | 5 | 4 · 15.5% risk |
| XT6 · SUV FWD | ★★★★★ | 5 / 5 | 5 | 5 | 4 · 16.4% risk |
Driver aids listed by NHTSA for the 2021 model year: forward collision warning standard, lane departure warning standard, automatic emergency braking standard.
Neighbouring years: 2020: same overall rating; 2022: same overall rating. A redesign between years can change both the car and the test.
Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.
Fuel economy and running cost
EPA ratings for each 2021 Cadillac XT6 version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).
| Version | Engine | Transmission | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|---|
| XT6 AWD | 2.0L 4-cyl | 9-speed automatic | 21 | 26 | 23 | $3,550 |
| XT6 AWD | 3.6L 6-cyl | 9-speed automatic | 18 | 25 | 21 | $3,200 |
| XT6 FWD | 2.0L 4-cyl | 9-speed automatic | 21 | 27 | 23 | $3,550 |
| XT6 FWD | 3.6L 6-cyl | 9-speed automatic | 19 | 26 | 21 | $3,200 |
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
- 22V709000Sep 22, 2022Back over prevention › Sensing system › CameraCovers: Cadillac XT6 2020–2021, GMC Acadia 2020–2021, Cadillac XT5 2020–2021
General Motors, LLC (GM) is recalling certain 2020-2021 Cadillac XT5, XT6, and GMC Acadia vehicles equipped with the optional Surround Vision feature. The rearview camera coaxial cable connectors may have been crimped improperly, causing the rearview camera…
- 21V422000Jun 3, 2021Fuel system, gasoline › Delivery › Hoses, lines/piping, and fittingsCovers: Cadillac XT6 2021, GMC Acadia 2021, Cadillac XT5 2021
General Motors, LLC. (GM) is recalling certain 2021 Cadillac XT5, XT6, and GMC Acadia vehicles. The fuel supply lines may be improperly attached and seated.
Recall details for the 2021 Cadillac XT6 → · Check a VIN at nhtsa.gov/recalls
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. 815 on record; the latest 10 are shown.
- 11037555Sep 26, 2026Other or unknown. This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- 11037253Sep 4, 2026Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11036392Aug 20, 2026Other or unknown. This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
- 11035340Jul 21, 2026Other or unknown. PI to help diagnose A/C concern
- 11034979Jul 6, 2026Other or unknown. This Preliminary information communicates that a vehicle may be encountered with the heated/ventilated seats inoperative. Upon further inspection it will be found that the F19DA fuse will be open…
- 11034769Jun 23, 2026Other or unknown. This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
- 11032764May 11, 2026Other or unknown. Pi created to provide GM dealers with information on gathering information for projection issue
- 11032763May 11, 2026Other or unknown. This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
- 11030974Apr 1, 2026Other or unknown. This preliminary information communicates information about how to determine if a wheel and tires size change is available.
- 11030532Mar 21, 2026Other or unknown. Improvements to OnStar functionality.
Other model years of the Cadillac XT6
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2025 | 8 | — | 1 | 5 | 23 | — | Too new |
| 2024 | 15 | 1,200 | 2 | 5 | 23 | — | Too new |
| 2023 | 13 | 64,000 | 2 | 5 | 23 | — | Too new |
| 2022 | 15 | 10,185 | 3 | 5 | 23 | — | Rising |
| 2021 | 21 | 31,500 | 2 | 5 | 23 | — | Rising |
| 2020 | 38 | 16,000 | 4 | 5 | 20 | Not compared (fewer than 3 comparable model years) | Stable |
Frequently asked questions
How many NHTSA complaints does the 2021 Cadillac XT6 have?
NHTSA recorded 21 consumer complaints for the 2021 Cadillac XT6 as of Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2021 Cadillac XT6 is reported most often?
Electrical system is named most often, in 5 complaints (24% of the total), followed by engine with 5.
Has the 2021 Cadillac XT6 been recalled?
NHTSA lists 2 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
How did the 2021 Cadillac XT6 do in NHTSA crash tests?
NHTSA's 5-Star Safety Ratings give the 2021 Cadillac XT6 5 out of 5 stars overall, across 2 rated versions (body style and drive). Ratings from different model years are only comparable when the vehicle was not redesigned in between.
What gas mileage does the 2021 Cadillac XT6 get?
The EPA rates the 2021 Cadillac XT6 (XT6 FWD, 2.0L 4-cyl) at 23 mpg combined, 21 city and 27 highway, with an estimated annual fuel cost of $3,550 at 15,000 miles a year. Other engine and drive versions are rated differently.
At what mileage are problems with the 2021 Cadillac XT6 reported?
Among the 4 complaints that include a mileage, the median is 31,500 miles and the middle half falls between 30,000 and 33,000 miles; 100% were filed for vehicles with under 50,000 miles.
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. Crash ratings are from NHTSA’s New Car Assessment Program. 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.