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

1991 Cadillac DeVille

1991 Cadillac DeVilleView this vehicle at dave franks auto sales →

Vehicle Details

VIN1G6CD53B9M4211744
Exterior ColorBlue
Inventory Typeused
Days on Lot313
Unscored
$21,49537,248 mi

Salem, MA 01970

Is this 1991 Cadillac DeVille a good deal?

OAV verdict: Unscored

Why: Listed at $21,495. OAV publishes a price verdict only when it has enough closely comparable listings to stand behind one. This listing did not clear that bar, so OAV withholds a verdict rather than guessing. Listed 313 days.

Market price position

OAV publishes a price verdict only when it has enough closely comparable listings to stand behind one. This listing did not clear that bar, so OAV withholds a verdict rather than guessing.

Dave Franks Auto Sales

Salem, MA

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

About This 1991 Cadillac DeVille

Listing updated: Sep 22, 2026

Listed by an independent dealer in Salem, MA · On lot for 313 days · VIN verifiable at NHTSA

This used 1991 Cadillac DeVille is listed at $21,495 by dave franks auto sales in Salem, MA 01970. It has 37,248 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Blue..

OAV's independent, evidence-backed Price-to-Market analysis rates this vehicle as Unscored. OAV publishes a price verdict only when it has enough closely comparable listings to stand behind one. This listing did not clear that bar, so OAV withholds a verdict rather than guessing.

This vehicle has been on the lot for 313 days.

Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477). Verdict methodology ptm-verdict-v1 · snapshot Sep 22, 2026. The comparable band (patent pending) is the input; ptm-verdict-v1 is the versioned OAV rule set that turns it into this verdict.

Market context

This listing is part of OAV's broader Salem, MA market analysis. OAV compares vehicles by local and regional price-to-market ranges and comparable count; days-on-lot and demand signals are shown separately, not as verdict inputs.

How this deal is rated

OAV compares this 1991 Cadillac DeVille against similar vehicles currently available for sale — same make, model, and year range, using trim where the data supports it. OAV does not adjust comparable prices for mileage; on used vehicles it withholds a verdict when mileage would distort the comparison — very high or unreliable mileage, or a lower price better explained by higher-than-typical mileage than by a genuine market discount — rather than overstate a deal. Based on where this listing falls in that comparable set, it is rated:

  • Great Deal — priced below the comparable-range floor by a meaningful margin (OAV's minimum-gap rule); a listing below the floor by less than that margin is Fair Price.
  • Fair Price — priced within the expected range for comparable vehicles.
  • Overpriced — priced above the typical range for comparable vehicles.
  • Unscored — OAV withholds a verdict when the evidence cannot support one: too few or too widely spread comparables, a price it cannot validate, a branded or salvage title, or mileage that would distort the comparison. The listing stays visible; only the rating is withheld.

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 can surface additional verification signals, but commercial participation never changes a listing's Price-to-Market verdict, eligibility, ranking, or confidence.

How this listing is verified

This vehicle listing was aggregated from an independent dealer in Salem, MA, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1G6CD53B9M4211744 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 vehicle market standardization technology (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.

1991 Cadillac DeVille Market in MA

MA Market Listings

1

Average Price

Price Range

Avg Days on Lot

313

Based on all 1 1989-1993 Cadillac DeVille listings in the MA market. Because OAV has not assigned a reliable price verdict to this listing, it does not state how it compares to this broader average. Similar vehicles spend an average of 313 days on dealer lots in this market.