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

2021 Audi Q3 S Line Premium

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Vehicle Details

VINWA1DECF31M1135889
TrimS Line Premium
Exterior ColorBlack
Drivetrain4WD
Engine2.0L I4
TransmissionAutomatic
Fuel TypeUnleaded
Inventory Typeused
Days on Lot4

S Line Premium

Fair Price
$20,83668,200 mi

Northfield, IL 60093

Is this 2021 Audi Q3 S Line Premium a good deal?

OAV verdict: Fair Price

Why: Listed at $20,836, comparable market range $15,499–$24,145, based on 12 comparable listings. Days on lot: 4 days (market average 58 days).

Market price position

$20,836 · within market range

Comparable range
$15,499 – $24,145
vs. market
$5,337 above low · $3,309 below high
Comparable vehicles
12

Market Retail Price (MRP™)

$19,822

This vehicle $20,836 · $1,014 (5%) above MRP

MRP™ is the midpoint of the comparable market range — the representative price the market is asking for similar vehicles. How MRP works.

True Retail Value (TRV™)

$21,401

This vehicle $20,836 · $565 (3%) below TRV

TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-08-02) — an estimate, not an appraisal. How TRV works.

Comparable vehicles nationally recently sold in an estimated 1451 days.

Market Breakdown

Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges are rebuilt from the market snapshot shown above.

Regional Range$15,499 – $24,145

Fields Volvo Cars Northfield

Northfield, IL

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

About This 2021 Audi Q3

Listing updated: Aug 2, 2026

Listed by a franchise dealer in Northfield, IL · On lot for 4 days · VIN verifiable at NHTSA

This used 2021 Audi Q3 S Line Premium is listed at $20,836 by fields volvo cars northfield in Northfield, IL 60093. It has 68,200 miles on the odometer (dealer-reported, not independently verified by OAV). 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 Fair Price — priced at market value. Based on 12 comparable listings matched to this vehicle, the estimated market range is $15,499 to $24,145. These comparisons match year, make, and model and may currently span trims and configurations (trim-level matching is rolling out).

This vehicle has been on the lot for 4 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 Northfield, IL suvs 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 Q3 against similar vehicles currently available in the local and regional market — same make, model, and year range (currently across available trims and configurations; trim-level matching is rolling out), filtered for comparable mileage. Based on where this listing falls in that comparable set, it is rated:

  • Great Deal — priced below the typical range for comparable vehicles.
  • Fair Price — priced within the expected range for comparable vehicles.
  • Overpriced — priced above the typical range for comparable vehicles.

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 Northfield, IL, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN WA1DECF31M1135889 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 processed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.

2021 Audi Q3 Market in IL

IL Market Listings

91

Average Price

$24,784

Price Range

$12,900–$35,847

Avg Days on Lot

58

Based on all 91 2019-2023 Audi Q3 listings in the IL market, the average asking price is $24,784. This listing at $20,836 is $3,948 below the broader IL average (16% below the IL average). This is a wider, all-trim comparison across IL; OAV's price verdict above uses the closer comparable set. Comparable prices in IL range from $12,900 to $35,847. Similar vehicles spend an average of 58 days on dealer lots in this market.

Similar Audi Q3 Listings in IL

8 similar listings shown (closest matches within ±2 model years) and ±30,000 miles (subject trim: S Line Premium — compare trims below)