1991 Porsche 911

Listed by a franchise dealer in Mill Valley, CA · On lot for 73 days · VIN verifiable at NHTSA

This used 1991 Porsche 911 is listed at $164,991 by porsche marin in Mill Valley, CA 94941. It has 86,224 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Green..

OAV's independent, evidence-backed Price-to-Market analysis rates this vehicle as Unscored — the available evidence doesn't support a market verdict. OAV has not assigned a reliable comparable market range for this vehicle yet — the available comparable evidence isn't sufficient for a reliable verdict.

This vehicle has been on the lot for 73 days.

Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477). Verdict methodology ptm-verdict-v1 · snapshot Sep 8, 2026. The patented comparable band 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 Mill Valley, CA 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.

• View the full Mill Valley, CA market →
• All vehicles in CA →
• All vehicles from this dealer →

How this deal is rated

OAV compares this 1991 Porsche 911 against similar vehicles currently available for sale — same make, model, and year range, using trim where trim data supports it. OAV does not adjust comparables for odometer; on very high-mileage vehicles it withholds a verdict rather than overstate a discount the odometer explains. 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.

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 a franchise dealer in Mill Valley, CA, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN WP0AB296XMS410879 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.

1991 Porsche 911 Market in CA

Based on all 21 1989-1993 Porsche 911 listings in the CA 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 99 days on dealer lots in this market.

Similar Porsche 911 Listings in CA

8 similar listings shown (closest matches within ±2 model years) and ±30,000 miles

This is a broad, statewide same-model set (any trim, mileage, or title) — not the qualified comparable cohort behind the verdict above; lower prices here typically reflect a different trim, higher mileage, or a branded title.