Used 2018 Cadillac CT6 for Sale near Missouri
Shop with transparent pricing.
Only show listings that include dealer fees- Year:
- 2019
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- Rear-Wheel Drive
- Engine:
- 237 hp 2L I4
- Exterior color:
- Radiant Silver Metallic
- Combined gas mileage:
- 29 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown (Sahara Beige)
- Transmission:
- Automatic
- Mileage:
- 29,656
- Stock #:
- T107649
- VIN:
- 1G6KA5RK9KU107649

2019 Cadillac CT6
2.0T Luxury RWD
29,656 mi
$31,130
- 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:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 77,313
- Stock #:
- 141795
- VIN:
- 1G6KH5R64HU141795

2017 Cadillac CT6
3.0TT Premium Luxury AWD
77,313 mi
$21,970
- 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
$19,960
- 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
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown (Beige)
- Transmission:
- 8-Speed Automatic
- Mileage:
- 101,343
- Stock #:
- CCN2132
- VIN:
- 1G6KD5RS2HU130156

2017 Cadillac CT6
3.6L Luxury AWD
101,343 mi
$17,993
- Year:
- 2018
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Crystal White Tricoat
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Cinnamon with Jet Black Accents
- Transmission:
- Automatic
- Mileage:
- 57,509
- Stock #:
- 120969
- VIN:
- 1G6KG5RS8JU120969

2018 Cadillac CT6
3.6L Premium Luxury AWD
57,509 mi
$30,659
- 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
$23,551
- 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:
- Automatic
- Mileage:
- 48,676
- Stock #:
- 70121138
- VIN:
- 1G6KD5RS0JU152064

2018 Cadillac CT6
3.6L Luxury AWD
48,676 mi
$31,197
- 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
$21,156
- 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

-$500
2018 Cadillac CT6
3.0TT Luxury AWD
106,632 mi
$19,805
$19,305
- Year:
- 2019
- 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:
- 78,373
- Stock #:
- 132371
- VIN:
- 1G6KD5RS6KU132371

2019 Cadillac CT6
3.6L Premium Luxury AWD
78,373 mi
$30,659
- 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
$29,416
- 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
$17,732
- Year:
- 2017
- 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
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 67,557
- Stock #:
- 155591
- VIN:
- 1G6KC5RX4HU155591

2017 Cadillac CT6
2.0T Luxury RWD
67,557 mi
$20,642
About 2018 Cadillac CT6
- 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

2018 Cadillac CT6
3.0TT Premium Luxury AWD
110,328 mi
$19,854
- 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
$19,587
- 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
$23,845
- 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:
- Black
- Transmission:
- Automatic
- Mileage:
- 38,533
- Stock #:
- 28709784
- VIN:
- 1G6KN5R64HU180573

2017 Cadillac CT6
3.0TT Platinum AWD
38,533 mi
$35,897
- 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
$20,452
- 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
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray
- Transmission:
- 8-Speed Automatic
- Mileage:
- 96,268
- Stock #:
- 7868SAM
- VIN:
- 1G6KD5RS9HU197868

2017 Cadillac CT6
3.6L Luxury AWD
96,268 mi
$20,587
- Year:
- 2018
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 335 hp 3.6L V6
- Exterior color:
- Red Horizon Tintcoat
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray (Light Platinum w/Jet Black Accents)
- Transmission:
- 8-Speed Automatic
- Mileage:
- 37,909
- Stock #:
- H9847
- VIN:
- 1G6KF5RS8JU154543

2018 Cadillac CT6
3.6L Premium Luxury AWD
37,909 mi
$32,845
- Year:
- 2018
- Make:
- Cadillac
- Model:
- CT6
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 404 hp 3L V6
- Exterior color:
- Black Raven
- Combined gas mileage:
- 22 MPG
- Fuel type:
- Gasoline
- Interior color:
- Very Light Cashmere
- Transmission:
- 8-Speed Automatic
- Mileage:
- 59,816
- Stock #:
- JU103796
- VIN:
- 1G6KP5R62JU103796

2018 Cadillac CT6
3.0TT Platinum AWD
59,816 mi
$30,499
- 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:
- Black
- Transmission:
- Automatic
- Mileage:
- 94,586
- Stock #:
- 130334
- VIN:
- 1G6KF5RS8HU130334
Photos coming soon
2017 Cadillac CT6
3.6L Premium Luxury AWD
94,586 mi
$20,844
- 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:
- 8-Speed Automatic
- Mileage:
- 79,546
- Stock #:
- 0552akr
- VIN:
- 1G6KD5RS6JU100552

2018 Cadillac CT6
3.6L Luxury AWD
79,546 mi
$22,587
Overview

Cadillac hasn’t had a true flagship sedan in many years, but that changed in 2016 with the introduction of the CT6. The model has been given the very ambitious task of luring buyers away from the other big luxury sedans, and for 2018, Cadillac is upping the ante with a few new features that should make the CT6 an even more compelling alternative.
The big news for 2018 is the addition of the all-new Super Cruise system to the CT6’s options list. Super Cruise is a semi-autonomous driving system similar to Tesla’s Autopilot that enables the vehicle to drive itself on the highway by using a suite of cameras, sensors, and GPS data. Super Cruise stands out from other semi-autonomous systems in a couple of ways—first of all, it uses LiDAR-based mapping data, which gives the system a more comprehensive idea of the road ahead and helps determine whether or not Super Cruise can be activated. Second, it includes a driver-attention system with a camera and infrared lights that monitor the position and movement of the driver’s head. If the driver turns away from the road, the system will issue an alert through a light bar on the steering wheel and send vibrations through the seat. If the driver fails to react, Super Cruise can bring the vehicle to a stop.
The CT6 differs from other Cadillac models in its design. Its exterior does feature Cadillac’s signature sharp lines and angles, but these have been toned down considerably in comparison to the likes of the ATS or CTS. Depending on the trim, the CT6 offers various grille inserts and wheels ranging in size from 18 to 20 inches. Despite its positioning as a flagship sedan, the CT6 comes up somewhat short in terms of length—it stands at just 204.1 inches, placing it between the BMW 5 and 7 Series.
Cadillac has put a lot of effort into making the CT6’s interior look and feel like a proper luxury car. Materials range from real wood and aluminum trim to leather upholstering the seats. The base trim comes with power adjustments for the front seats and memory settings for the driver, while higher trims get heated and ventilated front seats, a heated steering wheel, and heated rear seats. The backseat is quite spacious, with plenty of head- and legroom, although trunk capacity is below the class average at 15.3 cubic feet.
All CT6s come standard with the Cadillac User Experience (CUE) infotainment system and a 10.2-inch touchscreen. Once a major point of criticism, Cadillac has continued to improve CUE over the years with tweaks to the interface, hardware updates, and the addition of key features such as Apple CarPlay and Android Auto. The touchscreen comes with a separate touchpad controller, which some reviewers have noted is a bit too sensitive to accurately select items on the screen. Other standard technology features include OnStar’s concierge service, turn-by-turn directions, and OnStar 4G LTE with Wi-Fi.
Flagship sedans typically offer a wide range of powertrain options, and in this the CT6 delivers. The base engine is a turbocharged 2.0-liter 4-cylinder offering 265 hp and 295 lb-ft of torque. Up next is a 3.6-liter V6 good for 335 hp and 284 lb-ft, and topping the lineup is a twin-turbo 3.0-liter V6 with 404 hp and 400 lb-ft. All powertrains come standard with an 8-speed automatic transmission, and fuel economy ranges from 18 mpg city, 26 highway, and 21 combined for the twin-turbo V6 to 22, 31, and 25 for the 2.0-liter engine. The 2.0-liter gets rear-wheel drive (RWD), while both V6s are paired with an all-wheel-drive (AWD) system. Those wanting to go green can opt for the separate CT6 PLUG-IN model, which combines the turbo 2.0-liter with an electric motor for a total output of 335 hp.
Calling the Cadillac CT6 fun to drive may seem like a misnomer due to its size, but it stands as one of the sharpest-handling vehicles in the class. This is in large part thanks to its aluminum frame, which helps cut down on overall weight. An optional Active Chassis package adds GM’s excellent Magnetic Ride Control system, which uses special fluid in the shocks to keep the vehicle flat when cornering and smooth out bumps, and rear-wheel steering for better balance.
As for safety features, all CT6s come with a full set of airbags, traction and stability control, a reversing camera, and OnStar emergency services. Higher trims are equipped with blind-spot monitoring with rear cross-traffic alert, lane-departure warning, lane-keep assist, forward-collision alert, low-speed forward automatic braking, automatic pedestrian braking, and Cadillac’s Rear Camera Mirror that projects the reversing camera display onto the rear-view mirror.
Pricing for the 2018 Cadillac CT6 begins at $54,095.
*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
Filter by rating
Marina R. V
Reviewed a 2018 Cadillac CT6 on Feb 28, 2025
This vehicle has every bell and whistle that you can imagine. The price was absolutely amazing and I couldn't have found a better deal.
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 H T
Reviewed a 2018 Cadillac CT6 on May 10, 2022
This is my favorite car and for the money you cannot beat its price to options available. love the car.
Anonymous
Reviewed a 2018 Cadillac CT6 on Mar 16, 2021
This is a beautiful car inside and out. The ride is very smooth, nice handling, luxury and power all in one. The technology is second to none. When you see this car parked or in motion, all you can say is thats a sharp ride.
2018 Cadillac CT6 Trims
| Trim type | MSRP |
|---|---|
| 3.6L Platinum AWD | $84,295 |
| 2.0T RWD | $54,095 |
| 2.0T Luxury RWD | $59,195 |
| 3.0TT Premium Luxury AWD | $69,295 |
| 3.0TT Platinum AWD | $88,295 |
| 3.6L AWD | $56,095 |
| 3.6L Premium Luxury AWD | $65,295 |
| 3.6L Luxury AWD | $61,195 |
*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.
2018 Cadillac CT6 Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2018 Cadillac CT6 prices has changed over time.
See more price trends2018 Cadillac CT6 Pricing Analysis
Pricing by Popular US Cities
Market Area: Nationwide
Key Insights
- Highest-Price Market: Washington, DC leads with an average price of $32,781, indicating a premium market for the CT6.
- Best Value: Atlanta, GA offers the lowest average price at $17,226, presenting a significant opportunity for budget-conscious buyers.
- Inventory Drives Stability: Chicago, IL has the most listings at 48, suggesting a robust market presence that may stabilize pricing.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Chicago, IL | 48 | $23,936 |
| Dallas, TX | 48 | $22,148 |
| New York, NY | 43 | $27,496 |
| Washington, DC | 43 | $32,781 |
| Houston, TX | 41 | $21,413 |
| Atlanta, GA | 41 | $17,226 |
| Philadelphia, PA | 40 | $31,979 |
| Boston, MA | 36 | $20,995 |
| Miami, FL | 34 | $25,599 |
| Los Angeles, CA | 28 | $19,654 |
Pricing by Trim Packages
Key Insights
- Volume Leader: The 3.6L Luxury AWD trim has the highest inventory with 142 listings, indicating strong demand for this configuration.
- Premium Spread: The 3.0TT Platinum AWD trim, priced at $88,295, represents the highest MSRP, showcasing the premium segment of the CT6 lineup.
- Drivetrain Effect: All trims listed are AWD, reflecting a market preference for all-wheel drive in this luxury segment.
Trim-Level Details
| Trim | Listings | MSRP | Drivetrain | Engine |
|---|---|---|---|---|
| 3.6L Luxury AWD | 142 | $61,195 | AWD | 3.6L 335 hp V6 |
| 3.6L Premium Luxury AWD | 85 | $65,295 | AWD | 3.6L 335 hp V6 |
| 3.0TT Platinum AWD | 27 | $88,295 | AWD | 3.0L 404 hp V6 |
| 2.0T Luxury RWD | 21 | $59,195 | RWD | 2.0L 265 hp I4 |
| 3.0TT Premium Luxury AWD | 20 | $69,295 | AWD | 3.0L 404 hp V6 |
| 3.6L AWD | 16 | $56,095 | AWD | 3.6L 335 hp V6 |
| 2.0T RWD | 11 | $54,095 | RWD | 2.0L 265 hp I4 |
| 3.6L Platinum AWD | 6 | $84,295 | AWD | 3.6L 335 hp V6 |
Pricing Analysis by Model Year
Key Insights
- New-Car Premium: The 2020 model year shows a starting MSRP of $58,995, with an average price of $32,433, indicating significant depreciation.
- Depreciation Curve: The 2016 model year has the steepest depreciation at -66.3%, highlighting the rapid value loss typical for luxury vehicles.
- Best Value Sweet Spot: The 2018 model year averages $22,748, representing a strong value proposition compared to its starting MSRP of $54,095.
Model Year Pricing
| Model Year | Starting MSRP | Avg Price | Avg Price vs Starting MSRP |
|---|---|---|---|
| 2020 | $58,995 | $32,433 | -45.0% |
| 2019 | $50,495 | $28,546 | -43.5% |
| 2018 | $54,095 | $22,748 | -57.9% |
| 2017 | $53,795 | $19,116 | -64.5% |
| 2016 | $53,495 | $18,013 | -66.3% |
These recommendations are based on CarGurus' proprietary market data from October 21, 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.
How much does the 2018 Cadillac CT6 cost?
| Metric | Value |
|---|---|
| Current Average Price | $22,836 |
| Year-Round Low | $22,836 |
| Year-Round High | $24,251 |
| Average Price a Year Ago | $24,259 |
| Change vs. Last Year | −5.86% |
Prices have softened 5.86% compared to this time last year, making it a favorable time to shop this model year.
There are 247 listings available, which gives you a solid amount of inventory to compare before you buy.
Is the 2018 Cadillac CT6 a good car?
Yes — owners give it 4.7/5, which points to strong overall satisfaction. Reviewers consistently praise the smooth ride, luxurious interior, powerful performance, advanced technology, and spaciousness. The market also shows 30.4% of listings are good or great deals, which gives you some room to shop selectively.
Is the 2018 Cadillac CT6 reliable?
Owners rate it 4.7/5, a strong signal of long-term satisfaction.
The owner feedback points to a car that many drivers feel good about living with over time, especially when it comes to comfort, performance, and overall ownership experience. For used buyers, that kind of satisfaction can help reduce long-term ownership risk, but you should still verify condition carefully before you commit.
What should I look for when buying a used 2018 Cadillac CT6?
At 61.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
You should run a vehicle history report on any candidate you’re serious about and confirm whether prior damage was repaired properly. Put inspection priority on body condition, alignment, and signs of uneven wear, since those can reveal past accident impact. It also makes sense to focus on cabin comfort and road noise during your test drive, because those are areas owners have specifically called out.
Is now a good time to buy a used 2018 Cadillac CT6?
This looks like a moderate, selective buyer’s market, so you can shop patiently but should move quickly on the best listings.
- Deal availability: 30.4% of listings are priced as good or great deals.
- Inventory: There are 247 listings available.
- Price trend: Prices have softened 5.86% compared with last year.
- Clean inventory: 61.5% of listings are accident-free.
If you find a listing below $22,836, that's toward the low end of the year-round range and worth acting on quickly.
What is the 2018 Cadillac CT6's resale value?
The current average of $22,836 sits slightly below last year's $24,259.
That price movement suggests the model has softened in the used market, which can help you buy at a more favorable entry point today. For a future seller, that also means resale value may depend more heavily on condition, mileage, and how well the car has been maintained. Listings that stand out on cleanliness and history should be easier to move later.
Vehicles with strong owner satisfaction ratings, like this model year's 4.7/5, tend to retain buyer demand, which supports resale value over time.
Should I buy a 2018 Cadillac CT6 or consider a different year?
If you're weighing the 2018 against nearby model years, here's how to think about it:
Choose the 2018 if:
- 30.4% of listings are priced as good or great deals.
- At 61.5% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
- Price trend: Prices have softened 5.86% compared with last year.
- Owners rate it 4.7/5 — a strong satisfaction signal.
The bottom line: The 2018 makes sense if you want a well-liked CT6 with a softer used price and enough inventory to compare options. If you’re especially price-sensitive, you can also keep nearby model years in play and focus on the cleanest, best-priced example rather than the year alone.
How does the 2018 Cadillac CT6 compare to the 2018 BMW 7 Series?
| Spec | 2018 Cadillac CT6 | 2018 BMW 7 Series |
|---|---|---|
| Starting MSRP | $54,095 | $83,100 |
| Engine | 2.0L 265 hp I4 | 3.0L 320 hp I6 |
| Horsepower | 265 hp @ 5500 rpm | 320 hp @ 5500 rpm |
| MPG/MPGe (city) | 22 | 21 |
| MPG/MPGe (highway) | 30 | 29 |
| Average used price | $22,836 | $22,339 |
| Listings available | 247 | 520 |
| Good & great deal share | 30.4% | 31.3% |
| Accident-free share | 61.5% | 59.4% |
These recommendations are based on CarGurus' proprietary market data from October 21, 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.
