Used Cadillac CT6 for Sale nearRock Island, IL
Shop with transparent pricing.
Only show listings that include dealer fees- Year:
- 2020
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown (Sahara Beige W/Jet Black Accents)
- Transmission:
- Automatic
- Mileage:
- 62,942
- Stock #:
- 26F108B
- VIN:
- 1G6KE5RS5LU108948
2020 Cadillac CT6
3.6L Premium Luxury AWD
62,942 mi
$37,385
- Year:
- 2017
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 404 hp 3L V6
- Exterior color:
- Gray
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown
- Transmission:
- 8-Speed Automatic
- Mileage:
- 85,924
- Stock #:
- CT61039
- VIN:
- 1G6KE5R69HU178317
2017 Cadillac CT6
3.0TT Luxury AWD
85,924 mi
$19,808
- Year:
- 2018
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 404 hp 3L V6
- Exterior color:
- Stone Gray Metallic
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray (Light Platinum)
- Transmission:
- 8-Speed Automatic
- Mileage:
- 99,224
- Stock #:
- NP1076
- VIN:
- 1G6KJ5R63JU120513
2018 Cadillac CT6
3.0TT Premium Luxury AWD
99,224 mi
$23,591
- Year:
- 2017
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Radiant Silver Metallic
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 48,605
- Stock #:
- N204325
- VIN:
- 1G6KD5RS8HU204325
2017 Cadillac CT6
3.6L Luxury AWD
48,605 mi
$25,216
- Year:
- 2017
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- White
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown
- Transmission:
- Automatic
- Mileage:
- 99,272
- Stock #:
- 145930
- VIN:
- 1G6KD5RS3HU145930
2017 Cadillac CT6
3.6L Luxury AWD
99,272 mi
$18,795
- Year:
- 2017
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 404 hp 3L V6
- Exterior color:
- Gray
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Transmission:
- 8-Speed Automatic
- Mileage:
- 77,313
- Stock #:
- 141795
- VIN:
- 1G6KH5R64HU141795
2017 Cadillac CT6
3.0TT Premium Luxury AWD
77,313 mi
$21,600
- Year:
- 2017
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Black Raven
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray (Light Platinum w/Jet Black Accents)
- Transmission:
- 8-Speed Automatic
- Mileage:
- 58,675
- Stock #:
- H9864
- VIN:
- 1G6KD5RS1HU165738
2017 Cadillac CT6
3.6L Luxury AWD
58,675 mi
$23,457
- Year:
- 2018
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 404 hp 3L V6
- Exterior color:
- Gray
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 110,328
- VIN:
- 1G6KH5R64JU139342
-$1,000
2018 Cadillac CT6
3.0TT Premium Luxury AWD
110,328 mi
$20,691
$19,691
- Year:
- 2016
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- White
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- White
- Transmission:
- 8-Speed Automatic
- Mileage:
- 95,395
- Stock #:
- 166521
- VIN:
- 1G6KF5RS2GU166521
-$1,000
2016 Cadillac CT6
3.6L Premium Luxury AWD
95,395 mi
$19,476
$18,476
- Year:
- 2020
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Manhattan Noir Metallic
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown (Sahara Beige With Jet Black Accents)
- Transmission:
- Automatic
- Mileage:
- 128,832
- Stock #:
- 25296
- VIN:
- 1G6KE5RS1LU104881
-$1,000
2020 Cadillac CT6
3.6L Premium Luxury AWD
128,832 mi
$27,693
$26,693
- Year:
- 2020
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Black Raven
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 145,499
- Stock #:
- V626055
- VIN:
- 1G6KB5RS7LU111889
2020 Cadillac CT6
3.6L Luxury AWD
145,499 mi
$21,636
- Year:
- 2017
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- White
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown (Beige)
- Transmission:
- 8-Speed Automatic
- Mileage:
- 110,643
- Stock #:
- GM204408
- VIN:
- 1G6KD5RS1HU204408
2017 Cadillac CT6
3.6L Luxury AWD
110,643 mi
$17,722
- Year:
- 2018
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Blue
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown (Tan)
- Transmission:
- 8-Speed Automatic
- Mileage:
- 95,704
- Stock #:
- JYC-114184
- VIN:
- 1G6KD5RS7JU114184
2018 Cadillac CT6
3.6L Luxury AWD
95,704 mi
$20,776
Customer summary
The Cadillac CT6 has consistently impressed owners across its model years, with many praising its luxurious feel, smooth ride, and powerful performance. Reviewers often highlight its advanced technology and spacious interiors. However, some concerns have been raised about seating comfort and road noise, with a few drivers even pointing out issues with the touch screen and transmission. While it offers an enjoyable driving experience, high maintenance costs and missing features at certain trim levels have also been noted as drawbacks.
- Year:
- 2016
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- Rear-Wheel Drive
- Engine:
- 265 hp 2L I4
- Exterior color:
- Black
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Gasoline
- Transmission:
- 8-Speed Automatic
- Mileage:
- 63,763
- Stock #:
- U165945
- VIN:
- 1G6KA5RX2GU165945
2016 Cadillac CT6
2.0T RWD
63,763 mi
$19,365
- Year:
- 2019
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Red
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown (Beige)
- Transmission:
- Automatic
- Mileage:
- 87,105
- Stock #:
- 118544
- VIN:
- 1G6KD5RS7KU118544
2019 Cadillac CT6
3.6L Premium Luxury AWD
87,105 mi
$29,365
- Year:
- 2020
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Black
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 110,447
- Stock #:
- JYC-107095
- VIN:
- 1G6KB5RS5LU107095
2020 Cadillac CT6
3.6L Luxury AWD
110,447 mi
$24,176
- Year:
- 2016
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Radiant Silver Metallic
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 121,590
- Stock #:
- 79GU165033T1
- VIN:
- 1G6KB5RS1GU165033
2016 Cadillac CT6
3.6L AWD
121,590 mi
$16,376
- Year:
- 2018
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 404 hp 3L V6
- Exterior color:
- Stone Gray Metallic
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 106,632
- Stock #:
- 22622
- VIN:
- 1G6KE5R66JU109722
2018 Cadillac CT6
3.0TT Luxury AWD
106,632 mi
$19,546
- Year:
- 2018
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- White
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 106,822
- Stock #:
- D1995
- VIN:
- 1G6KD5RS3JU115462
2018 Cadillac CT6
3.6L Luxury AWD
106,822 mi
$20,138
- Year:
- 2018
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 404 hp 3L V6
- Exterior color:
- Dark Adriatic Blue Metallic
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Very Light Cashmere w/Maple Sugar Accents
- Transmission:
- Automatic
- Mileage:
- 150,238
- Stock #:
- 3995
- VIN:
- 1G6KN5R67JU107557
2018 Cadillac CT6
3.0TT Platinum AWD
150,238 mi
$19,571
- Year:
- 2018
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Black
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 45,412
- Stock #:
- C121542
- VIN:
- 1G6KD5RS9JU121542
2018 Cadillac CT6
3.6L Luxury AWD
45,412 mi
$27,532
- Year:
- 2020
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Black Raven
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 46,460
- Stock #:
- CINLU111997
- VIN:
- 1G6KB5RSXLU111997
2020 Cadillac CT6
3.6L Luxury AWD
46,460 mi
$35,824
- Year:
- 2018
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Silver
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 89,184
- Stock #:
- 0386EHA
- VIN:
- 1G6KD5RS4JU100386
2018 Cadillac CT6
3.6L Luxury AWD
89,184 mi
$19,534
How much does the Cadillac CT6 cost in today's market?
Used Cadillac CT6 prices span a wide range depending on model year. Here's what the market looks like right now:
| Model Year | Current Avg. Price | Year-Round Range |
|---|---|---|
| 2019 | $28,285 | $27,200 – $29,238 |
| 2018 | $23,294 | $22,949 – $24,344 |
| 2017 | $18,198 | $18,162 – $21,058 |
| 2016 | $18,404 | $17,986 – $20,545 |
The Cadillac CT6's current nationwide average price is $21,493, and its lowest point over the past year was $21,310. Recently, prices have come down for the 2017, 2018, and 2019 models, making now a good time to shop recent model years.
Is the Cadillac CT6 a good car?
Yes — the Cadillac CT6 is a strong choice if you want a luxury sedan with a polished driving experience. The all-generations owner rating is 4.64/5 across every model year in the data.
Owners consistently praise the CT6 for its luxurious feel, smooth ride, powerful performance, advanced technology, and spacious interior. Many also highlight the quiet cabin and the way the car blends comfort with a more engaging driving character.
29.6% of listings are priced as good or great deals.
Are Cadillac CT6 models reliable?
Owners consistently praise the CT6 for its smooth ride, strong performance, and upscale feel, and expert impressions align with that overall appeal. Across the model years, the car also earns especially strong owner feedback for comfort, technology, and interior space.
- Owners rate the Cadillac CT6 between 4.0 and 4.8 out of 5 stars across all model years in the data.
For used buyers, long-term ownership can be shaped by maintenance costs and the condition of individual examples, so a careful inspection and service-history review are especially worthwhile.
What should I look for when buying a used Cadillac CT6?
Across all model years, at 60.1% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
| Model Year | Accident-Free % |
|---|---|
| 2020 | 61.4% |
| 2019 | 58.9% |
| 2018 | 60.4% |
| 2017 | 59.6% |
| 2016 | 61.3% |
What Cadillac CT6 do most buyers choose?
The Cadillac CT6 years with the most listings are 2017, 2018, and 2019.
| Model Year | Total Listings | Good + Great Deals % |
|---|---|---|
| 2017 | 255 | 30.2% |
| 2018 | 250 | 28.4% |
| 2019 | 175 | 29.7% |
| 2016 | 163 | 29.4% |
| 2020 | 83 | 27.7% |
These higher-volume years tend to draw more shoppers because they offer more inventory to compare, which can make it easier to find the right combination of price, condition, and features. They also give you a broader set of listings to evaluate when you’re trying to balance value and availability.
What is the Cadillac CT6's resale value?
| Model Year | Current Avg. Price | Year-Over-Year Change |
|---|---|---|
| 2017 | $18,198 | −13.62% |
| 2016 | $18,404 | −4.77% |
| 2018 | $23,294 | −4.31% |
| 2019 | $28,285 | −0.84% |
Most of the model years in this table are down year over year, which can create better buying opportunities for used shoppers. The largest drop is in the older end of the lineup, while the newest year shown is nearly flat, suggesting stronger price stability there. Overall, the pattern points to a market where recent used CT6s have softened, but some years are holding value more closely than others.
The 2019 model year is holding steady, with prices close to flat year-over-year.
The 2019, 2018, and 2016 model years have held their value best, with the smallest year-over-year price changes.
Should I buy a used Cadillac CT6 now?
Buy now if:
- Price trend: The 2019 model is at −0.84% versus a year ago, and the 2018 model is at −4.31%.
- Deal availability: The 2019 model has 29.7% good and great deals, and the 2018 model has 28.4%.
- Sweet-spot year: The 2017 model has the most listings at a current average price of $18,198.
If you're buying used today, the 2017 model year offers the best mix of value and availability.
These recommendations are based on CarGurus' proprietary market data from October 13, 2026, CarGurus experts' opinions, and generative AI.
*CarGurus meticulously monitors the prices of millions of pre-owned vehicle listings, offering users precise and up-to-date market insights. Historical pricing data excludes any additional dealer fees as of May 3, 2026.
4.7 Overall rating
Customers say
The Cadillac CT6 has consistently impressed owners across its model years, with many praising its luxurious feel, smooth ride, and powerful performance. Reviewers often highlight its advanced technology and spacious interiors. However, some concerns have been raised about seating comfort and road noise, with a few drivers even pointing out issues with the touch screen and transmission. While it offers an enjoyable driving experience, high maintenance costs and missing features at certain trim levels have also been noted as drawbacks.
AI generated from the text of customer reviews.
Filter by year
Filter by rating
What people say
Robert S
Reviewed a 2016 Cadillac CT6 on Jan 21, 2026
I actually have the 2017 ct6 . I love it. Great car!
James M
Reviewed a 2018 Cadillac CT6 on Oct 22, 2024
Love this car. Best car ive owned. All i want is a cadillac going forward
Robert S
Reviewed a 2016 Cadillac CT6 on Jan 6, 2026
The only thing better would be the 3.0TT. engine. I have the 2017 3.6 v6 engine and its an awesome car too.
Christopher K
Reviewed a 2019 Cadillac 3.6L Premium Luxury AWD on Mar 12, 2026
Beautiful car with comfortable seating and very generous options and colors
Cadillac CT6 Trims
| Trim type | MSRP |
|---|---|
| 3.6L Premium Luxury AWD | $74,495 |
| 4.2TT Platinum AWD | $96,495 |
| 3.6L Luxury AWD | $58,995 |
*CarGurus meticulously monitors the prices of millions of pre-owned vehicle listings, offering users precise and up-to-date market insights. Historical pricing data excludes any additional dealer fees as of May 3, 2026.
Cadillac CT6 Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of Cadillac CT6 prices has changed over time.
See more price trendsCadillac CT6 Pricing Analysis
Pricing Analysis by Model Year
Key Insights
- New-Car Premium: The 2020 model year has an average price of $32,628, indicating a significant depreciation from its starting MSRP of $58,995.
- Steepest Depreciation: The 2016 model year shows the steepest depreciation at -66.5%, reflecting a rapid decline in value over time.
- Years Priced Above Starting MSRP: No model years are priced above their starting MSRP, suggesting a consistent downward trend in market value.
Model Year Pricing
| Model Year | Starting MSRP | Avg Price | Avg Price vs Starting MSRP |
|---|---|---|---|
| 2020 | $58,995 | $32,628 | -44.7% |
| 2019 | $50,495 | $29,041 | -42.5% |
| 2018 | $54,095 | $23,109 | -57.3% |
| 2017 | $53,795 | $18,457 | -65.7% |
| 2016 | $53,495 | $17,906 | -66.5% |
Pricing by Popular US Cities
Market Area: Nationwide
Key Insights
- Highest-Price Market: Philadelphia, PA has the highest average price at $27,406, indicating strong demand in that area.
- Best Value: Houston, TX offers the lowest average price at $17,703, presenting a more affordable option for shoppers.
- Inventory Drives Stability: Chicago, IL leads with 56 total listings, suggesting a robust market presence that may stabilize pricing.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Chicago, IL | 56 | $23,538 |
| New York, NY | 55 | $26,552 |
| Washington, DC | 53 | $21,250 |
| Philadelphia, PA | 51 | $27,406 |
| Atlanta, GA | 48 | $23,207 |
| Dallas, TX | 47 | $19,245 |
| Boston, MA | 46 | $23,511 |
| Houston, TX | 42 | $17,703 |
| Miami, FL | 33 | $22,597 |
| Los Angeles, CA | 26 | $21,375 |
Pricing by Trim Packages
Key Insights
- Volume Leader: The 3.6L Luxury AWD trim has the highest inventory with 134 listings, indicating strong consumer interest.
- Premium Spread: The 3.6L Premium Luxury AWD trim is priced at $74,495, reflecting a significant premium over the base trim.
- Drivetrain Effect: All trims listed are AWD, suggesting a market preference for this drivetrain configuration among buyers.
Trim-Level Details
| Trim | Listings | MSRP | Drivetrain | Engine |
|---|---|---|---|---|
| 3.6L Luxury AWD | 134 | $58,995 | AWD | 3.6L 335 hp V6 |
| 3.6L Premium Luxury AWD | 88 | $74,495 | AWD | 3.6L 335 hp V6 |
| 4.2TT Platinum AWD | 2 | $96,495 | AWD | 4.2L 500 hp V8 |
These recommendations are based on CarGurus' proprietary market data from October 14, 2026, CarGurus experts' opinions, and generative AI.
*CarGurus meticulously monitors the prices of millions of pre-owned vehicle listings, offering users precise and up-to-date market insights. Historical pricing data excludes any additional dealer fees as of May 3, 2026.
