2018 Mini Cooper Convertible John Works
WMWWH9C5XJ3A78431
No longer listed since around Aug 25, 2026
Last listed by CarMax O'Fallon · O'Fallon, IL
- Last asking price
- $29,998
- Odometer
- 9,143 mi
- On the market
- 12 days
The date is when the listing came down — the final sale price isn't public. Prices further down describe the market for this build, not this car.
Last listed by CarMax O'Fallon
Hours
- Mon–Fri
- 11:00 AM – 8:00 PM
- Sat
- 9:00 AM – 7:00 PM
They no longer list this VIN, but may have a similar one — worth a call.
Contact details come from the dealer's listing and public business records. VinAssessment is not the seller and takes no fee — you deal with the dealer directly.
2018 Mini Cooper Convertible John Works
VIN WMWWH9C5XJ3A78431
Market price range
Based on 6 comparable same-build listings — a small sample, treat the band as a rough guide · Market data as of November 15, 2026See all 2018 Mini Cooper Convertible prices — typical $23,486 →
Love this car? See what else is out there.
2018 Mini Cooper Convertible John Works for sale near O'FallonIL
2 cheaper within 50 miles · best $13,911 less
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50 miles around O'Fallon
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Vehicle locations appear when available.
Price history for this VIN
Asking prices recorded across 2 listing dates for VIN WMWWH9C5XJ3A78431, spanning 3 days.
Listings
Full listing history on VehiSales →No active listings of this exact VIN right now.
Former listings
| Dealer | Location | Price | Mileage | Listed | Seen |
|---|---|---|---|---|---|
| CarMax O'Fallon | O'Fallon, IL 62269 | $29,998 | 9,143 mi | 2026-08-20 | 82 d ago |
| CarMax St. Louis Mid Rivers Mall | St Peters, MO 63376 | $29,998 | 9,140 mi | 2026-08-20 | 82 d ago |
| CarMax St. Louis Mid Rivers Mall | Saint Peters, MO 63376 | $29,998 | 9,140 mi | 2026-08-17 | 86 d ago |
| CarMax O'Fallon | Belleville, IL 62269 | $29,998 | 9,143 mi | 2026-08-13 | 82 d ago |
Decoded from the VIN
NHTSA build data for WMWWH9C5XJ3A78431Full factory specs for this build →
- ✓ Backup camera
- ✗ Blind-spot monitor
- ✗ Lane departure
- ✗ ABS
- ✓ Electronic stability
Fuel economy (EPA)
Assumes 15,000 miles a year at $3.10/gallon and 30 MPG combined.
5-year cost to own
Beyond the sticker: what this 2018 Mini Cooper Convertible likely costs over five years at 15,000 mi/yr.
Estimate — insurance and taxes vary by driver and state.
Model-level data for the 2018 Mini Cooper Convertible from EPA fueleconomy.gov, refreshed October 29, 2026.
Market by model year
What each model year costs right now — live supply, median asking price and how much value each year keeps versus the newest one.
| Year | Units for sale | Median price | vs newest | Avg mileage |
|---|---|---|---|---|
| 2027 | 718 | $46,400 | 100% | — |
| 2026 | 861 | $43,550 | 94% | 917 mi |
| 2025 | 72 | $36,583 | 79% | 8,262 mi |
| 2024 | 235 | $30,590 | 66% | 20,946 mi |
| 2023 | 96 | $28,954 | 62% | 27,135 mi |
| 2022 | 60 | $27,437 | 59% | 34,403 mi |
| 2021 | 37 | $24,995 | 54% | 36,720 mi |
| 2020 | 26 | $23,301 | 50% | 38,912 mi |
Units for sale — listings of each model year in the latest nightly market snapshot.
