U.S. Patent No. 12,236,477 — Patented Automotive Data Standardization Technology
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Vehicle Details

VINWAUB4AF41JA003916
TrimPremium Plus
Exterior ColorGray
Drivetrain4WD
Engine3.0L V6
TransmissionAutomatic
Fuel TypePremium Unleaded
Inventory Typeused
Days on Lot5

2018 Audi S4

Premium Plus

Unscored
$26,11974,087 mi

St. Peters, MO 63376

Is this 2018 Audi S4 Premium Plus a good deal?

OAV verdict: Unscored

Why: Listed at $26,119, comparable market range $26,119–$26,119. Days on lot: 5 days (market average 12 days).

Market price position

26,119
26,119
26,119

$26,119 · only listing at this price

$26,119 — single data point
Regional range
$26,119 (0 listings)
vs. market
Exact match — no spread
Comparable vehicles
0
Demand-Verified· Backed by recent sales data
High Demand

Similar vehicles recently sold in an estimated 833 days.

What does Demand-Verified mean?

Napleton's Mid Rivers Kia

St. Peters, MO

OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.

View all vehicles from napleton's mid rivers kia

Request availability and out-the-door price

OAV will route your inquiry to Napleton's Mid Rivers Kia for current availability of this 2018 Audi S4 Premium Plus and an out-the-door price quote (taxes, fees, addons included).

OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.

About This 2018 Audi S4

Listing updated: Jun 24, 2026

Listed by a franchise dealer in St. Peters, MO · On lot for 5 days · VIN verifiable at NHTSA

This used 2018 Audi S4 Premium Plus is listed at $26,119 by napleton's mid rivers kia in St. Peters, MO 63376. It has 74,087 miles on the odometer. The exterior color is Gray. It features a 4WD drivetrain with a 3.0L V6 engine and Automatic transmission.

OAV's AI-powered Price-to-Market analysis rates this vehicle as Unscored due to insufficient comparable data. Based on available similar vehicles in the St. Peters market, the estimated market range is $26,119 to $26,119.

This vehicle has been on the lot for 5 days.

Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477).

Market context

This listing is part of OAV's broader St. Peters, MO sedans market analysis. OAV compares vehicles using local and regional price-to-market ranges, days-on-lot, comparable count, and demand signals where available.

How this deal is rated

OAV compares this 2018 Audi S4 against similar vehicles currently available in the local and regional market — same make, model, and year range, filtered for comparable mileage. Based on where this listing falls in that comparable set, it is rated:

Listings show OAV's PTM-derived deal quality and live market context. OAV-claimed dealers manage their listing profile and route buyer inquiries directly. Paid OAV partners surface additional verification signals.

How this listing is verified

This vehicle listing was aggregated from a franchise dealer in St. Peters, MO, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN WAUB4AF41JA003916 can be independently verified via the U.S. Department of Transportation's NHTSA VIN decoder, and safety recalls at NHTSA's recall database.

Vehicle attributes (year, make, model, trim, mileage, location) are standardized using OAV's patented methodology (U.S. Patent No. 12,236,477), which normalizes naming conventions and deduplicates cross-listed inventory across the dealership network. Listing data is refreshed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.

2018 Audi S4 Market in MO

Comparable Vehicles

3

Average Price

$25,880

Price Range

$21,998–$29,524

Avg Days on Lot

12

Based on 3 comparable 2016-2020 Audi S4 listings in MO, the average asking price is $25,880. This listing at $26,119 is $239 above average (1% above market). Comparable prices in MO range from $21,998 to $29,524. Similar vehicles spend an average of 12 days on dealer lots in this market.

Similar Audi S4 Listings in MO

2 comparable vehicles within ±2 model years and ±30,000 miles (subject trim: Premium Plus — compare trims below)