The 2021 Cadillac XT6 has 18 NHTSA owner complaints and 2 recalls on file (U.S. federal records, as of September 2026). The most-reported system is electrical at 3 complaints (~$850 to repair). Source: NHTSA Office of Defects Investigation.
Solid reliability overall. Common issues are concentrated in a few systems.
0
Critical
2
Severe
0
Moderate
Should you avoid this 2021 XT6?
Generally reliable
Buyable on the data — keep up the usual maintenance and inspect normally.
No systemic severe-failure pattern in the complaint record
Reliability score 8.2/10 — above the segment average
2 recall campaigns on file
Our read of the federal NHTSA complaint and recall record for this exact year and model —
not a substitute for a pre-purchase inspection. How we score.
NHTSA crash-test safety ratings
5 / 5 overall
Overall★★★★★5/5
Frontal crash★★★★★5/5
Side crash★★★★★5/5
Rollover★★★★★4/5
Driver-assist features on the tested model:
Electronic stability control: Standard · Forward collision warning: Standard · Lane departure warning: Standard
Source: NHTSA New Car Assessment Program — tested configuration: 2021 Cadillac XT6 SUV AWD. Stars rate crash protection in NHTSA's tests, not overall reliability — see the owner-complaint data below for what actually goes wrong.
Buying a used 2021 Cadillac XT6? Check these first
Here's what this model is known to do — so you can inspect for it, price it in, or
make the seller fix it before you sign.
What to inspect on this specific car
electrical — 3 owner reports
· ~$850 to fix
Recalls to confirm are done
Run the VIN from the listing — 2 active recalls on this model. Recall repairs are always free.
Verdict for buyers: 8.2/10 model. The priciest documented failure is
electrical (~$850) — get the
seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report
tells you what this exact car has been through. Smart buyers get both.
A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in
this vehicle's actual NHTSA record, not generic advice.
Dash light, leak, worn part — snap it and we'll read it against this car's record.
Photo attached — type a question or just hit Ask.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
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What owners are saying
recent NHTSA-filed complaints · verbatim
2021 XT6· engine
The vehicle's check engine light came on late afternoon and then started with a delayed turn over, but not actually starting thr following day. The vehicle had to be towed to the dealership. The technician and service advisor commented immediately that it is likely the fuel…
Car started and ran at idle for 5 minutes. 10 minutes later when attempting to restart, the engine churned for several seconds then ran for about 2 seconds and cut out. "Press to Start" button remained showing green and would not respond to being pressed. The car was…
Recall for cable for vision system repaired 5/28/2025. On 6/29/25 same issues occured. Took to dealer 7/18/25. Dealer confirmed cable replaced. Attempted to reprogram video processing center several times ( I was at dealer 7 hours). Dealer indicated that the video…
Front brake vibration, alarming grinding/rubbing/screeching sound each and every time service brakes are applied. Dealer claims this is a known GM problem with no fix available. I have purchased two Cadillacs Xt6 and Xt5 May 2021. Both vehicles have the same problem. Wife will…
Had a problem with your 2021 Cadillac XT6?
File a complaint with NHTSA → It's free and official — owner filings are what build the federal safety record behind this page.
Estimate your repair exposure
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
General Motors, LLC (GM) is recalling certain 2020-2021 Cadillac XT5, XT6, and GMC Acadia vehicles equipped with the optional Surround Vision feature
An inoperative rearview camera can reduce the driver's rear visibility, increasing the risk of a crash.
Fix: Dealers will replace the coaxial cables, free of charge. Owner notification letters were mailed January 18, 2023. Owners may contact Cadillac customer service at 1-800-458-8006 or GMC customer service at 1-800-462-8782. GM's number for this recall is N222378380.
Improperly attached and seated fuel supply lines may loosen or separate, causing a fuel leak and increasing the risk of a fire.
Fix: Dealers will inspect and replace fuel supply lines as necessary, free of charge. Owner notification letters were mailed on July 1, 2021. Owners may contact Cadillac customer service at 1-800-458-8006 and GMC customer service at 1-800-462-8782. GM's number for this recall is N212335590.
Common questions
Is the 2021 Cadillac XT6 reliable?
Mostly yes. With a reliability score of 8.2 out of 10 based on 18 owner complaints filed with NHTSA, the 2021 Cadillac XT6 is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.
Should you avoid the 2021 Cadillac XT6?
On the NHTSA data, the 2021 Cadillac XT6 does not need avoiding. Buyable on the data — keep up the usual maintenance and inspect normally. The record behind that call: No systemic severe-failure pattern in the complaint record; Reliability score 8.2/10 — above the segment average; 2 recall campaigns on file. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
What should I check before buying a used 2021 Cadillac XT6?
Inspect the electrical first — it's the most-reported issue on this model, with 3 owner complaints filed. Average repair cost runs about $850 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
Is the 2021 Cadillac XT6 a good used car to buy?
It scores 8.2 out of 10 on our NHTSA-based read of 18 owner complaints. The main thing to watch is electrical. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
What's the most common problem on the 2021 Cadillac XT6?
Based on NHTSA records, the most-reported issue is electrical, with 3 complaints filed. Average repair cost runs about $850 at an independent shop.
What's the most expensive thing that goes wrong?
The electrical is one of the costlier repair items. Average repair cost runs about $850 at an independent shop. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my Cadillac XT6 has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2021 Cadillac XT6?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 18 complaints on file and the costliest repair averaging $850, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.
Recall and complaint data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database, last synced 6 days ago. Verify the raw federal record at
nhtsa.gov/vehicle/2021/Cadillac/XT6.
Editorial commentary written by ProblemsByVin contributors and reviewed by ASE-certified mechanics.
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