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ProblemsByVinFile / 2020-CADILLAC-CT6NHTSA data synced 1 day ago
Cadillac
2020 Cadillac CT6 problems
Light NHTSA footprint — 11 owner complaints and 2 active recall campaigns. Either a clean record or thin data; we'll show what's there.
The 2020 Cadillac CT6 has 11 NHTSA owner complaints and 2 recalls on file (U.S. federal records, as of August 2026). The most-reported system is powertrain at 6 complaints, typically surfacing around 81,000 miles (~$2,500 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 2020 CT6?
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 8.4/10 — 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.
Buying a used 2020 Cadillac CT6? 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
powertrain — 6 owner reports
· tends to show around 81,000 mi · ~$2,500 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: 8.4/10 model. The priciest documented failure is
powertrain (~$2,500) — 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
2020 CT6· brakesCrash
On friday, november 13, 2020 I was stopped at a stoplight in marysville, ohio. It appeared that traffic started to move, so I took my foot off the brake. Almost immediately the emergency braking feature engaged. While this tends to startle you because it is so abrupt, almost…
Tl* the contact owns a 2020 Cadillac ct6. The contact stated that while depressing the brake pedal, there was a loud screeching sound coming from the wheels. The vehicle was taken to woodland Cadillac located at 530 quality cir #101, woodland, ca 95776, to be diagnosed. The…
The vehicle was shifting harshly and my wheels were experiencing lock up while in motion which was very dangerous. I experienced this on the parkway as well as streets and almost had a few accidents due to this problem. I drive my wife and children in this vehicle. Our safety…
Car was acquired in february and scraping noise in front brakes was noticed in may. Waited to see if the noise would go away by itself but became louder and took to Cadillac dealer, miller Cadillac in ellicott city md telephone 410-750-1100 on july 30. I was told the mechanic…
Had a problem with your 2020 Cadillac CT6?
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 2019-2020 Cadillac CT6, 2020-2021 CT4, CT5, and 2020-2022 Chevrolet Camaro vehicles equipped with a 10-speed transmission
Wheel lock-up while driving increases the risk of a crash.
Fix: 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.
General Motors LLC (GM) is recalling certain 2020 Cadillac CT6 vehicles equipped with dealer-installed accessory 20" x 8
Drivers may drive the vehicle with low tire pressure without a low tire pressure warning, negatively impacting the vehicle handling and increasing the risk of a crash.
Fix: GM will notify owners, and dealers will replace all four TPMS sensors with the correct sensors, free of charge. The recall began December 3, 2019. Owners may contact GM customer service at 1-586-596-1733. GM's number for this recall is N192279200.
Common questions
Is the 2020 Cadillac CT6 reliable?
Mostly yes. With a reliability score of 8.4 out of 10 based on 11 owner complaints filed with NHTSA, the 2020 Cadillac CT6 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 2020 Cadillac CT6?
On the NHTSA data, the 2020 Cadillac CT6 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 8.4/10 — 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 2020 Cadillac CT6?
Inspect the powertrain first — it's the most-reported issue on this model, with 6 owner complaints filed. Typical failure occurs around 81,000 miles. Average repair cost runs about $2,500 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 2020 Cadillac CT6 a good used car to buy?
It scores 8.4 out of 10 on our NHTSA-based read of 11 owner complaints. The main thing to watch is powertrain. Typical failure occurs around 81,000 miles. 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 2020 Cadillac CT6?
Based on NHTSA records, the most-reported issue is powertrain, with 6 complaints filed. Typical failure occurs around 81,000 miles. Average repair cost runs about $2,500 at an independent shop.
What's the most expensive thing that goes wrong?
The powertrain is one of the costlier repair items. Average repair cost runs about $2,500 at an independent shop. Typical failure occurs around 81,000 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my Cadillac CT6 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 2020 Cadillac CT6?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 11 complaints on file and the costliest repair averaging $2,500, 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 1 day ago. Verify the raw federal record at
nhtsa.gov/vehicle/2020/Cadillac/CT6.
Editorial commentary written by ProblemsByVin contributors and reviewed by ASE-certified mechanics.
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