2021 BMW 3 Series

Listed by an independent dealer in South Portland, ME · On lot for 21 days · VIN verifiable at NHTSA

This used 2021 BMW 3 Series M340i is listed at $43,998 by carmax south portland in South Portland, ME 04106. It has 56,673 miles on the odometer. The exterior color is Blue. It features a 4WD drivetrain with a 3.0L I6 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 South Portland market, the estimated market range is $43,998 to $43,998.

This vehicle has been on the lot for 21 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 South Portland, ME sedans market analysis. OAV compares vehicles using local and regional price-to-market ranges, days-on-lot, comparable count, and demand signals where available.

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How this deal is rated

OAV compares this 2021 BMW 3 Series 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:

• 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 an independent dealer in South Portland, ME, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3MW5U9J07M8B71513 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 BMW 3 Series Market in ME

Based on 24 comparable 2019-2023 BMW 3 Series listings in ME, the average asking price is $30,254. This listing at $43,998 is $13,744 above average (45% above market). Comparable prices in ME range from $19,690 to $43,998. Similar vehicles spend an average of 23 days on dealer lots in this market.

Similar BMW 3 Series Listings in ME

8 comparable vehicles within ±2 model years and ±30,000 miles (subject trim: M340i — compare trims below)