U.S. Patent No. 12,236,477 — Patented Automotive Data Standardization Technology
OAV
2021 Audi A4

Vehicle Details

VINWAUABAF49MA015575
TrimPremium
Exterior ColorBlack
Drivetrain4WD
Engine2.0L I4
TransmissionAutomatic
Fuel TypePremium Unleaded
Inventory Typeused
Days on Lot6

2021 Audi A4

Premium

Unscored
$20,08270,717 miles

Des Plaines, IL 60018

Market price position

19,187
25,499
20,082

$20,082 · within market range

$19,187comparable$25,499
Regional range
$19,187 – $25,499
vs. market
$895 above low · $5,417 below high
Comparable vehicles
4
Demand-Verified· Backed by recent sales data

Similar vehicles recently sold in an estimated 1861 days.

Market Breakdown

Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges refresh daily.

Regional Range$19,187 – $25,499

Dealer Info

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Des Plaines, IL

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About This 2021 Audi A4

Listing updated: May 14, 2026

Listed by a franchise dealer in Des Plaines, IL · On lot for 6 days · VIN verifiable at NHTSA

This used 2021 Audi A4 Premium is listed at $20,082 by a franchise dealer in Des Plaines, IL 60018. It has 70,717 miles on the odometer. The exterior color is Black. It features a 4WD drivetrain with a 2.0L I4 engine and Automatic transmission.

OAV's AI-powered Price-to-Market analysis rates this vehicle as Unscored due to insufficient comparable data. Based on 4 similar vehicles in the Des Plaines market, the estimated market range is $19,187 to $25,499.

This vehicle has been on the lot for 6 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 Des Plaines, IL 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 2021 Audi A4 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:

This rating refreshes daily as inventory enters and leaves the market. The dealer on this listing has not yet activated on OAV, so the business name and contact details are anonymized here. Activated (paying) dealers appear with their verified business name and a Verified badge.

How this listing is verified

This vehicle listing was aggregated from a franchise dealer in Des Plaines, IL, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN WAUABAF49MA015575 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.

2021 Audi A4 Market in IL

Comparable Vehicles

146

Average Price

$27,525

Price Range

$13,900–$36,404

Avg Days on Lot

41

Based on 146 comparable 2019-2023 Audi A4 listings in IL, the average asking price is $27,525. This listing at $20,082 is $7,443 below average (27% below market). Comparable prices in IL range from $13,900 to $36,404. Similar vehicles spend an average of 41 days on dealer lots in this market.

Similar Audi A4 Listings in IL

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