Car wash prices in St Charles, MO
3 of 21 car washes in St Charles list their prices online. Share your location to see which ones are worth the drive.
- Cheapest unlimited plan
- $20/mo
- Typical unlimited plan
- $20/mo
- Cheapest single wash
- $8
- Typical single wash
- $10
$ cheapest third $ middle $ priciest third
3100 Elm Point Industrial Dr · Self-serve, Express tunnel · 4.7★ (38)
2301 S Old Hwy 94 · Drive-through automatic · 4.6★ (133)
2024 S Old Hwy 94 · Self-serve, Touchless · 3.9★ (138)
About these prices
The cheapest unlimited monthly plan we found in St Charles is at FastLane on 2301 S Old Hwy 94, at $20 a month. The cheapest single wash is at FastLane, from $8. A typical unlimited plan costs about the same as 2 single washes, so it pays off if you wash more often than that each month.
Prices are the cheapest regular ones each car wash lists on its own website, last checked in November 2026. Intro deals and add-ons are left out, and prices can differ by location. Each listing has a link to tell us when a price changes. All car washes in St Charles.