We use cookies and similar technologies to enhance site functionality, analyze traffic, and personalize ads. You can accept, decline, or customize your settings. By using this site, you agree to our Privacy Policy.

The $300 Best-Offer Guarantee

Sell your car in O'Fallon, MO.

Two numbers off one inspection: take the cash today, or take a reserve check now and a second check when it sells at retail. We pay $300 over any competing offer that came from a real appraisal.

500 Auto Mall Drive, O'Fallon4.9 · 95 Google reviews

Sell your car in O'Fallon, MO at Sell My Car STL

Option 1: Instant Cash

A firm number, paid before you leave
Built on a real inspection, good for seven days. Holding a written offer from another dealership that actually saw the car? Bring it to O'Fallon and we pay $300 over it.
How the Cash Offer Works

Option 2: Maximum Value

Aim at retail instead of wholesale
A reserve check the day you drop it off, then a second check for your share once it sells at retail. We absorb the reconditioning and the weeks on the lot.
How Profit Sharing Works

Or Trade It

Or put either number toward your next car
Buying somewhere else today? Get our number first anyway. Two minutes, no obligation, and it tells you whether the allowance you were offered is real money.
Sell or Trade Options

How it works

From "what's it worth?" to paid — in one visit

How selling your car works at Sell My Car STL in O'Fallon
  • 1

    Start online, about two minutes

    A plate and state, or a VIN, plus a few honest condition questions. Failed emissions, hail dents and warning lights all belong in those answers — none of them disqualify the car, and disclosing them keeps the number steady later.

  • 2

    Bring it in, about twenty minutes on the lot

    A local appraiser in O'Fallon confirms condition in person and finalises both numbers off the same inspection, then explains how each one was reached.

  • 3

    Choose speed or ceiling, and get paid

    Take the cash and the check prints while you sign, or take the reserve check now and a second one when the car sells at retail. Either way the title work, the lien payoff and the Notice of Sale are ours.

Visit us

Real people at 500 Auto Mall Drive

No mailing your keys to a warehouse. Drive in, meet a real appraiser, and get both numbers explained face to face — most visits take under an hour.

Mon–Fri 9 AM–6 PM·Sat 9 AM–5 PM·Sun Closed

Setting your store personalizes phone numbers, hours, and offers across the site.

Ryan Tharp, General Sales Manager at Sell My Car STL in O'Fallon

Ask for Ryan

Ryan Tharp · General Sales Manager

Sell My Car STL · O'Fallon

500 Auto Mall Drive, O'Fallon, MO 63368

Call us at (314) 455-8652 Get directions

Greater St. Louis

How St. Charles County sells a car

Auto Mall Drive is where St. Charles County goes to buy a car, which makes it an odd place to sell one — most lots on this road only want your car as a trade against theirs. We are at 500 Auto Mall Drive, off Highway K a minute north of I-64, and we buy whether or not you are replacing anything. A real appraiser looks at the car, explains both offers, and pays you the same day.

This county sends us a different mix than West County does. Commuter sedans and crossovers with real highway miles off the I-70 and I-64 runs — miles that are far gentler on a drivetrain than the odometer suggests, and that a wholesale appraisal rarely credits. Minivans and three-row SUVs aging out after a decade of Mid Rivers school runs. And trucks, plenty of them, including a steady stream from Wentzville. Clean pickups carry the widest retail-to-wholesale gap of anything we buy, which is why profit sharing tends to win on them.

We take cars, trucks, SUVs and vans in any condition — ten minutes up Highway K from Lake Saint Louis, in on I-70 from St. Peters and St. Charles, or down from Wentzville and Troy. St. Charles County is in the Gateway Vehicle Inspection Program, which surprises people who assume emissions testing stops at the county line, so a car that just failed its test is routine here and the repair estimate is not yours to solve. Holding a written offer from another store's in-person appraisal? Bring it and we pay $300 more.

Titled in Illinois? That is routine too. Illinois titles through Secretary of State facilities rather than a licence office, and the buyer-side tax works differently — here is what to bring. We complete the assignment ourselves, so an out-of-state title does not quietly cost you anything on the number.

Proudly serving sellers across Greater St. Louis:

  • O'Fallon
  • St. Charles
  • St. Peters
  • Wentzville
  • Lake Saint Louis
  • Cottleville
  • Dardenne Prairie
  • Weldon Spring
  • Troy

FAQ

Selling a car in O'Fallon: common questions

Straight answers from the Sell My Car STL team in O'Fallon about offers, titles, loan payoffs, and what to bring.

Still have questions? Talk to a human
Yes — accept the offer, bring the car for inspection, and you can leave the same day with a check.
Read the full answer to: Can I sell my car the same day I get an Instant Cash Offer?

Get started

Get your two offers for O'Fallon now

Two minutes online, no obligation. Then visit us at 500 Auto Mall Drive and leave with a same-day check — or a higher payout later.