2018 Cadillac CT6 prices in Illinois
The median asking price for a 2018 Cadillac CT6 in Illinois is $25,998 based on 8 active listings.
As of September 8, 2026, the median asking price for a 2018 Cadillac CT6 in Illinois is $25,998, based on 8 active dealer listings tracked by VinAssessment.
◷ Updated September 8, 2026 ▤ 8 active dealer listings, refreshed daily ⛭ Generation: 2016–2020
Typical: $20,948–$30,970 — the middle half of 8 asking prices
Why the wide range? Price depends mostly on configuration and mileage — see below. This spread covers the middle 96% of asking prices: we exclude the cheapest and priciest 2% (payment-priced ads, typos, salvage) so outliers don't distort it.
What moves the price on a 2018 Cadillac CT6
The $20,948–$30,970 typical range isn't randomness — two factors explain most of it:
Asking prices run about $31,370 at 30K–45K miles and fall to $19,882 over 105K miles — roughly $1,500 for every 10,000 miles.
The 36L AWD typically asks $19,648, while the Platinum asks $28,550 — same year, same market.
Find your mileage and trim in the configurator below.
Configure the exact car
Modelled from 41 real asking prices, adjusted for mileage and location. Not a formal appraisal.
What would a 2018 Cadillac CT6 cost per month?
Estimate the monthly payment on a $22,499 vehicle. Move the numbers to match your own loan.
Estimate only. Excludes tax, title, registration and dealer fees, and assumes a fixed-rate loan with equal monthly payments. Your actual rate depends on your credit and lender.
2018 Cadillac CT6: a fair price for your mileage
A 2018 Cadillac CT6 sheds roughly $1,500 for every 10,000 miles. Find your mileage below.
Fair price by mileage and trim
| Mileage | All listings | Luxury | Premium Luxury | Platinum |
|---|---|---|---|---|
| 30K–45K miles | $31,370 | $30,444 | — | $34,405 |
| 45K–60K miles | $30,841 | $30,848 | $25,854 | — |
| 60K–75K miles | $25,966 | $22,999 | $26,975 | $34,944 |
| 75K–90K miles | $24,218 | $22,532 | $25,442 | $28,408 |
| 90K–105K miles | $21,460 | $21,495 | $22,119 | $25,439 |
| Over 105K miles | $19,882 | $19,284 | $20,410 | $23,244 |
Medians of live asking prices per band and version; “—” means fewer than 3 matching listings. National data.
Fair price by mileage — all versions combined
| Mileage ⓘ | Based on ⓘ | Fair price ⓘ | Typical range ⓘ |
|---|---|---|---|
| 30K–45K miles | 11 listings | $31,370 | $29K–$34K |
| 45K–60K miles | 12 listings | $30,841 | $26K–$31K |
| 60K–75K miles | 17 listings | $25,966 | $22K–$29K |
| 75K–90K miles | 18 listings | $24,218 | $22K–$28K |
| 90K–105K miles | 23 listings | $21,460 | $20K–$24K |
| Over 105K miles | 30 listings | $19,882 | $16K–$23K |
Same trim and condition assumed — mileage is the biggest lever after configuration. National data; Illinois prices track it closely.
2018 Cadillac CT6: price by trim
| Trim | Based on ⓘ | Median price ⓘ | Typical range ⓘ | Where it sits ⓘ |
|---|---|---|---|---|
| Luxury | 41 listings | $22,499 | $19K–$28K | |
| Premium Luxury | 34 listings | $24,766 | $22K–$28K | |
| Platinum | 20 listings | $28,550 | $25K–$33K | |
| 36L AWD | 12 listings | $19,648 | $17K–$21K |
Based on a small number of listings per trim — medians are indicative, not definitive. National data; Illinois prices track it closely.
Live 2018 Cadillac CT6 listings, priced by VIN
Every VIN links to a full market report: decode, active listings and the local price band. Shop 2017–2019 Cadillac CT6 listings on VehiSales →.
Price history
Median asking price by month — national · shaded band is the typical range (25th–75th percentile)
The median listing price for a 2018 Cadillac CT6 is $23,990 (September 2026) — down 3.6% from $24,886 in September 2025.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| September 2026 | $23,990 | $21K–$29K | 80 |
| August 2026 | $23,311 | $20K–$28K | 163 |
| July 2026 | $23,990 | $20K–$28K | 173 |
| June 2026 | $23,999 | $21K–$28K | 133 |
| May 2026 | $23,969 | $20K–$28K | 132 |
| April 2026 | $24,672 | $21K–$28K | 125 |
| March 2026 | $23,990 | $21K–$27K | 195 |
| February 2026 | $23,992 | $21K–$28K | 181 |
| January 2026 | $23,900 | $21K–$28K | 173 |
| December 2025 | $23,616 | $20K–$27K | 150 |
| November 2025 | $22,950 | $20K–$27K | 105 |
| October 2025 | $24,298 | $20K–$27K | 90 |
| September 2025 | $24,886 | $21K–$29K | 58 |
2018 Cadillac CT6 inventory across the U.S.
Factory configurations of the 2018 Cadillac CT6
14 factory configurations left the plant as a 2018 Cadillac CT6 — the most common are below, each decoded into its own build sheet from the VIN pattern.
- Luxury 3L 6cyl AWD 158 built
- 36L AWD 3.6L 6cyl AWD $19,800
- Premium Luxury (Csav) 3.6L 6cyl AWD $25,966
- Premium Luxury (Csav) 3L 6cyl AWD $24,437
- Premium Luxury 3.6L 6cyl AWD $21,179
- Platinum (Csav) 3.6L 6cyl AWD 88 built
- Luxury 2L 4cyl RWD 265 built
- Platinum (Csav) 3L 6cyl AWD $29,921
- Premium Luxury 2L 4cyl RWD 103 built
- Platinum 3L 6cyl AWD $29,797
- Platinum 3.6L 6cyl AWD 26 built
- Luxury 3.6L 6cyl AWD $21,995
- 20T RWD 2L 4cyl RWD 205 built
- Premium Luxury 3L 6cyl AWD 160 built
Keep exploring CT6 prices
2018 Cadillac CT6 · $25,998 typical · 8 listingsOther Cadillac CT6 years
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Own a 2018 Cadillac CT6? See what it's worth →
Frequently asked questions
Why do 2018 Cadillac CT6 prices range from $20,110 to $36,450 in Illinois?
The spread comes down to configuration and mileage: higher-mileage, base-configuration examples sit near the low end, while low-mileage and premium configurations reach the top. Half of all listings fall between $20,948 and $30,970 — see the mileage and trim breakdowns above for where a specific vehicle lands.
How much should mileage change the price of a 2018 Cadillac CT6?
Expect roughly $1,500 less for every 10,000 miles on the odometer. A 60K-mile example should cost about $4,500 less than a 30K-mile one of the same trim — check the fair-price-by-mileage table above for your band.
Do Cadillac CT6 prices in Illinois differ from the rest of the country?
Yes. The average in Illinois is $26,818, which is $2,804 above the national average of $24,014. Local supply, demand and transport costs all play a part.
How many 2018 Cadillac CT6 are for sale in Illinois right now?
8 in total. Counts refresh daily from live dealer inventory.
How we calculate these prices
We track 8 active listings for this vehicle across dealer sites nationwide, updated every day. Average and median are computed from real asking prices on live listings. We exclude the top and bottom 2% of prices to reduce the influence of extreme values. This does not verify title status or guarantee that every erroneous listing is excluded. Prices reflect dealer asking prices — not final sale prices — and exclude taxes, fees, and incentives. Trim and mileage move the price more than any other factor; see the breakdowns above.
Want the original factory equipment and MSRP behind a specific car? Pull the original window sticker by VIN →
Shopping for this car?
Check individual VINs before you buy — decode the exact trim and mileage, see every active listing, and how each price compares to the local market.