2020 Cadillac CT6 Luxury
Vehicle Details
Luxury
Carol Stream, IL 60188
Is this 2020 Cadillac CT6 Luxury a good deal?
OAV verdict: Overpriced
Why: Listed at $40,407, comparable market range $24,999–$29,402, based on 17 comparable listings. Days on lot: 6 days (market average 33 days).
Market price position
$40,407 · $11,005 above market high
- Comparable range
- $24,999 – $29,402
- vs. market high
- + $11,005 (37% above)
- Comparable vehicles
- 17
Market Retail Price (MRP™)
$27,201This vehicle $40,407 · $13,206 (49%) above MRP
MRP™ is the midpoint of the comparable market range — the representative price the market is asking for similar vehicles. How MRP works.
True Retail Value (TRV™)
$48,558This vehicle $40,407 · $8,151 (17%) below TRV
TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-08-12) — an estimate, not an appraisal. How TRV works.
Comparable vehicles nationally recently sold in an estimated 14–54 days.
Market Breakdown
Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges are rebuilt from the market snapshot shown above.
Auto Showcase Of Carol Stream
Carol Stream, IL
OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.
Request availability and out-the-door price
OAV will route your inquiry to Auto Showcase Of Carol Stream for current availability of this 2020 Cadillac CT6 Luxury and an out-the-door price quote (taxes, fees, addons included).
OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.
About This 2020 Cadillac CT6
Listing updated: Aug 12, 2026Listed by an independent dealer in Carol Stream, IL · On lot for 6 days · VIN verifiable at NHTSA
This used 2020 Cadillac CT6 Luxury is listed at $40,407 by auto showcase of carol stream in Carol Stream, IL 60188. It has 18,092 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Black. It features a 4WD drivetrain with a 3.6L V6 engine and Automatic transmission.
OAV's AI-powered Price-to-Market analysis rates this vehicle as Overpriced — priced above market value. Based on 17 comparable listings matched to this vehicle, the estimated market range is $24,999 to $29,402. These comparisons match year, make, and model and may currently span trims and configurations (trim-level matching is rolling out).
This vehicle has been on the lot for 6 days.
Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477).
Market context
This listing is part of OAV's broader Carol Stream, IL sedans market analysis. OAV compares vehicles using local and regional price-to-market ranges, days-on-lot, comparable count, and demand signals where available.
How this deal is rated
OAV compares this 2020 Cadillac CT6 against similar vehicles currently available in the local and regional market — same make, model, and year range (currently across available trims and configurations; trim-level matching is rolling out), filtered for comparable mileage. Based on where this listing falls in that comparable set, it is rated:
- Great Deal — priced below the typical range for comparable vehicles.
- Fair Price — priced within the expected range for comparable vehicles.
- Overpriced — priced above the typical range for comparable vehicles.
Listings show OAV's PTM-derived deal quality and live market context. OAV-claimed dealers manage their listing profile and route buyer inquiries directly. Paid OAV partners surface additional verification signals.
How this listing is verified
This vehicle listing was aggregated from an independent dealer in Carol Stream, IL, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1G6KB5RS9LU101025 can be independently verified via the U.S. Department of Transportation's NHTSA VIN decoder, and safety recalls at NHTSA's recall database.
Vehicle attributes (year, make, model, trim, mileage, location) are standardized using OAV's patented methodology (U.S. Patent No. 12,236,477), which normalizes naming conventions and deduplicates cross-listed inventory across the dealership network. Listing data is processed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.
2020 Cadillac CT6 Market in IL
IL Market Listings
16
Average Price
$30,779
Price Range
$21,595–$45,998
Avg Days on Lot
33
Based on all 16 2018-2022 Cadillac CT6 listings in the IL market, the average asking price is $30,779. This listing at $40,407 is $9,628 above the broader IL average (31% above the IL average). This is a wider, all-trim comparison across IL; OAV's price verdict above uses the closer comparable set. Comparable prices in IL range from $21,595 to $45,998. Similar vehicles spend an average of 33 days on dealer lots in this market.
Similar Cadillac CT6 Listings in IL
2 similar listings shown (closest matches within ±2 model years) and ±30,000 miles (subject trim: Luxury — compare trims below)