2018 Cadillac CTS prices in Illinois
The median asking price for a 2018 Cadillac CTS in Illinois is $18,407 based on 5 active listings.
As of July 25, 2026, the median asking price for a 2018 Cadillac CTS in Illinois is $18,407, based on 5 active dealer listings tracked by VinAssessment.
◷ Updated July 25, 2026 ▤ 5 active dealer listings, refreshed daily Methodology →
Typical: $17,598–$19,995 — the middle half of 5 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 CTS
The $17,598–$19,995 typical range isn't randomness — two factors explain most of it:
The Luxury typically asks $15,767, while the V asks $69,238 — same year, same market.
Asking prices run about $28,184 at 30K–45K miles and fall to $13,794 over 105K miles — roughly $1,900 for every 10,000 miles.
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.
2018 Cadillac CTS: a fair price for your mileage
A 2018 Cadillac CTS sheds roughly $1,900 for every 10,000 miles. Find your mileage below.
Fair price by mileage and trim
| Mileage | All listings | Luxury | V | Base |
|---|---|---|---|---|
| 15K–30K miles | — | — | $69,485 | — |
| 30K–45K miles | $28,184 | $20,894 | $70,088 | $17,998 |
| 45K–60K miles | $21,284 | $21,141 | — | $20,018 |
| 60K–75K miles | $17,539 | $17,489 | — | — |
| 75K–90K miles | $16,872 | $15,990 | — | — |
| 90K–105K miles | $13,499 | $13,494 | — | — |
| Over 105K miles | $13,794 | $14,220 | — | — |
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 | 14 listings | $28,184 | $21K–$70K |
| 45K–60K miles | 15 listings | $21,284 | $20K–$23K |
| 60K–75K miles | 7 listings | $17,539 | $17K–$21K |
| 75K–90K miles | 18 listings | $16,872 | $15K–$18K |
| 90K–105K miles | 11 listings | $13,499 | $13K–$15K |
| Over 105K miles | 8 listings | $13,794 | $11K–$14K |
Same trim and condition assumed — mileage is the biggest lever after configuration. National data; Illinois prices track it closely.
2018 Cadillac CTS: price by trim
| Trim | Based on ⓘ | Median price ⓘ | Typical range ⓘ | Where it sits ⓘ |
|---|---|---|---|---|
| Luxury | 41 listings | $15,767 | $14K–$19K | |
| V | 16 listings | $69,238 | $66K–$71K | |
| Base | 10 listings | $18,246 | $17K–$20K | |
| Premium Luxury | 8 listings | $18,995 | $17K–$23K |
Based on a small number of listings per trim — medians are indicative, not definitive. National data; Illinois prices track it closely.
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 CTS is $18,340 (July 2026) — down 8.3% from $19,996 in August 2025.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| July 2026 | $18,340 | $15K–$21K | 92 |
| June 2026 | $17,992 | $15K–$21K | 118 |
| May 2026 | $17,522 | $16K–$20K | 92 |
| April 2026 | $18,600 | $16K–$21K | 91 |
| March 2026 | $17,874 | $14K–$21K | 148 |
| February 2026 | $17,586 | $14K–$20K | 108 |
| January 2026 | $17,872 | $15K–$20K | 126 |
| December 2025 | $17,800 | $15K–$20K | 79 |
| November 2025 | $17,172 | $15K–$20K | 84 |
| October 2025 | $18,300 | $14K–$22K | 69 |
| September 2025 | $18,998 | $16K–$22K | 60 |
| August 2025 | $19,996 | $17K–$22K | 46 |
2018 Cadillac CTS inventory across the U.S.
Keep exploring CTS prices
2018 Cadillac CTS · $28,638 typical · 5 listingsOther Cadillac CTS years
Live 2018 Cadillac CTS listings, priced by VIN
Every VIN links to a full market report: decode, active listings and the local price band. Shop 2017–2019 Cadillac CTS listings on VehiSales →.
More 2018 Cadillac prices
Frequently asked questions
Why do 2018 Cadillac CTS prices range from $16,903 to $66,321 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 $17,598 and $19,995 — see the mileage and trim breakdowns above for where a specific vehicle lands.
How much should mileage change the price of a 2018 Cadillac CTS?
Expect roughly $1,900 less for every 10,000 miles on the odometer. A 60K-mile example should cost about $5,700 less than a 30K-mile one of the same trim — check the fair-price-by-mileage table above for your band.
Do Cadillac CTS prices in Illinois differ from the rest of the country?
Yes. The average in Illinois is $28,638, which is $1,107 above the national average of $27,531. Local supply, demand and transport costs all play a part.
How many 2018 Cadillac CTS are for sale in Illinois right now?
5 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
How we calculate these prices
We track 5 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 remove data errors, salvage titles, and monthly-payment figures posted as if they were sale prices. 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.
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