2018 Mercedes-Benz S-Class S450

Listed by a franchise dealer in Shrewsbury, MA · On lot for 29 days · VIN verifiable at NHTSA

This used 2018 Mercedes-Benz S-Class S450 is listed at $29,595 by Wagner Motors in Shrewsbury, MA 01545. It has 93,180 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Gray. It features a 4WD drivetrain with a 3.0L V6 engine and Automatic transmission.

OAV's independent, evidence-backed Price-to-Market analysis rates this vehicle as Fair Price — priced in line with the supported comparable range. Based on 12 comparable listings matched to this vehicle, the estimated market range is $15,999 to $29,890. These comparisons match year, make, and model, using trim where the data supports it. OAV does not adjust comparable prices for mileage — every price shown is the real advertised price. On used vehicles, mileage can still cause OAV to withhold a verdict — very high or unreliable mileage, or a lower price better explained by higher-than-typical mileage than by a genuine market discount — rather than call it a deal it can't support.

This vehicle has been on the lot for 29 days.

Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477). Verdict methodology ptm-verdict-v1 · snapshot Oct 14, 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 Shrewsbury, MA sedans market analysis. OAV rates each vehicle against its comparable range and comparable count — local-first, widening the comparison set only when local inventory is too thin to support a reliable range; days-on-lot and demand signals are shown separately, not as verdict inputs.

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How this deal is rated

OAV compares this 2018 Mercedes-Benz S-Class 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 at least OAV's minimum-gap margin; a smaller gap under the floor is Fair Price.
• Fair Price — priced within the comparable range, or below the floor by less than that margin.
• Overpriced — priced above the comparable range.
• 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 Price-to-Market verdict and live market context for every dealer's inventory, whether or not the dealer has any relationship with OAV. Shopper questions reach dealers through OAV whether or not they have claimed their listings. A dealer that claims its listings can choose where those questions are delivered and read them in its OAV inbox; claiming changes nothing shown on any OAV page. A dealer that has received a shopper question through OAV has a green contact card; other dealers' cards are white. The color is not a rating, a verification, or an endorsement. While OAV tests the color, half of these dealers' listings, chosen at random by vehicle, show the white card instead. A dealer that pays for OAV Dealer Plus has an "OAV Dealer Plus" label on the dealer contact block of its own listings. The label means the dealer pays OAV; it is not a rating, a verification, or an endorsement. That is the complete list of what a relationship with OAV changes. Payment never changes a vehicle's verdict, its eligibility to be scored or cited, the evidence shown or withheld, or where and how prominently the listing appears on any OAV page, board, or answer. There is no paid placement, ranking, ordering, verdict badge, or featured position of any kind. OAV sells dealers insight into the evidence, never influence over it.

How this listing is verified

This vehicle listing was aggregated from a franchise dealer in Shrewsbury, MA, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN WDDUG6EB8JA411402 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.

2018 Mercedes-Benz S-Class Market in MA

Based on all 24 2016-2020 Mercedes-Benz S-Class listings in the MA market, the average asking price is $33,497. This listing at $29,595 is $3,902 below the broader MA average (12% below the MA average). This is a wider, all-trim comparison across MA; OAV's price verdict above uses the closer comparable set. Comparable prices in MA range from $23,889 to $54,322. Similar vehicles spend an average of 129 days on dealer lots in this market.