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

The Automotive Answer Engine

Every car has an answer. We hold the evidence.

Ask about a VIN, price, or market. OAV returns an independent, snapshot-dated answer and the market evidence behind it — a verdict where the evidence supports one, and the evidence itself where it doesn't.

Found a car anywhere? Paste the VIN — OAV resolves it against the supported comparable range, drawn from millions of dealer-advertised listings. Dealers can't pay to change a verdict.

OAV.io is an independent automotive market-evidence platform. It evaluates asking prices against comparable listings and publishes a Price-to-Market verdict when the evidence supports one. Days-on-lot and sell-through from similar vehicles are separate demand evidence, never inputs to the Price-to-Market verdict.

Market snapshot · October 25, 2026

6M+

Unique vehicles analyzed

as of October 25, 2026

56,000+

US dealerships

Daily

Data pipeline

Comparable

Market-evidence analysis

3.3M new·2.8M used·Listings processed daily

Or explore the market

56 listings found

2007 Mercedes-Benz E-Class E350

Image from the dealer's site. OAV does not own, control, or store dealer images.

2007 Mercedes-Benz E-Class E350

Crestwood, IL

UnscoredInsufficient · 4
$6,79993,992 mi

Comparison: 4 similar vehicles

Crestwood, IL

2006 Mercedes-Benz R-Class R350

Image from the dealer's site. OAV does not own, control, or store dealer images.

2006 Mercedes-Benz R-Class R350

Crestwood, IL

UnscoredInsufficient · 0
$6,800115,410 mi

Crestwood, IL

2006 Mercedes-Benz R-Class R350

Image from the dealer's site. OAV does not own, control, or store dealer images.

2006 Mercedes-Benz R-Class R350

Crestwood, IL

UnscoredInsufficient · 0
$7,50082,355 mi

Crestwood, IL

2012 Mercedes-Benz E-Class E350

Image from the dealer's site. OAV does not own, control, or store dealer images.

2012 Mercedes-Benz E-Class E350

Crestwood, IL

UnscoredInsufficient · 3
$8,999121,510 mi

Comparison: 3 similar vehicles

Crestwood, IL

2014 Mercedes-Benz GL-Class GL450

Image from the dealer's site. OAV does not own, control, or store dealer images.

2014 Mercedes-Benz GL-Class GL450

Crestwood, IL

UnscoredLimited · 6
$9,999131,158 mi

Comparison: 6 similar vehicles

Crestwood, IL

2016 Mercedes-Benz C-Class C300 Luxury

Image from the dealer's site. OAV does not own, control, or store dealer images.

2016 Mercedes-Benz C-Class C300 Luxury

Crestwood, IL

UnscoredInsufficient · 0
$12,99593,313 mi

Crestwood, IL

2015 Mercedes-Benz S-Class S550

Image from the dealer's site. OAV does not own, control, or store dealer images.

2015 Mercedes-Benz S-Class S550

Crestwood, IL

UnscoredModerate · 31
$13,900125,019 mi

Comparison: 31 similar vehicles

Crestwood, IL

2016 Mercedes-Benz E-Class E350 Sport

Image from the dealer's site. OAV does not own, control, or store dealer images.

2016 Mercedes-Benz E-Class E350 Sport

Crestwood, IL

Fair PriceLimited · 17
$14,69981,471 mi

Market: $10,492 – $20,433

Comparison: 17 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 175 days listed (based on current market benchmarks)

Crestwood, IL

2017 Mercedes-Benz GLS-Class GLS450

Image from the dealer's site. OAV does not own, control, or store dealer images.

2017 Mercedes-Benz GLS-Class GLS450

Crestwood, IL

UnscoredModerate · 23
$14,995155,555 mi

Comparison: 23 similar vehicles

Crestwood, IL

2014 Mercedes-Benz E-Class E350

Image from the dealer's site. OAV does not own, control, or store dealer images.

2014 Mercedes-Benz E-Class E350

Crestwood, IL

Fair PriceLimited · 10
$15,495119,671 mi

Market: $8,900 – $19,265

Comparison: 10 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 82 days listed (based on current market benchmarks)

Crestwood, IL

2019 Mercedes-Benz GLC GLC300

Image from the dealer's site. OAV does not own, control, or store dealer images.

2019 Mercedes-Benz GLC GLC300

Crestwood, IL

Fair PriceRobust · 55
$15,99566,108 mi

Market: $11,431 – $19,995

Comparison: 55 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 33 days listed (based on current market benchmarks)

Crestwood, IL

2019 Mercedes-Benz GLC GLC300

Image from the dealer's site. OAV does not own, control, or store dealer images.

2019 Mercedes-Benz GLC GLC300

Crestwood, IL

Fair PriceRobust · 55
$15,99591,862 mi

Market: $11,431 – $19,995

Comparison: 55 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 43 days listed (based on current market benchmarks)

Crestwood, IL

2018 Mercedes-Benz CLA CLA250

Image from the dealer's site. OAV does not own, control, or store dealer images.

2018 Mercedes-Benz CLA CLA250

Crestwood, IL

OverpricedLimited · 12
$15,99578,600 mi

Market: $13,395 – $14,995

Comparison: 12 similar vehicles

Priced ~7% above the typical market range for similar vehicles (based on current market benchmarks)

Crestwood, IL

2019 Mercedes-Benz C-Class Sedan C300

Image from the dealer's site. OAV does not own, control, or store dealer images.

2019 Mercedes-Benz C-Class Sedan C300

Crestwood, IL

Fair PriceModerate · 22
$16,99596,854 mi

Market: $12,999 – $19,778

Comparison: 22 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 4 days listed (based on current market benchmarks)

Crestwood, IL

2018 Mercedes-Benz GLS-Class GLS450

Image from the dealer's site. OAV does not own, control, or store dealer images.

2018 Mercedes-Benz GLS-Class GLS450

Crestwood, IL

UnscoredLimited · 11
$16,995126,305 mi

Comparison: 11 similar vehicles

Crestwood, IL

2015 Mercedes-Benz S-Class S550

Image from the dealer's site. OAV does not own, control, or store dealer images.

2015 Mercedes-Benz S-Class S550

Crestwood, IL

UnscoredModerate · 31
$16,995139,046 mi

Comparison: 31 similar vehicles

Crestwood, IL

2018 Mercedes-Benz Metris Cargo Van Base

Image from the dealer's site. OAV does not own, control, or store dealer images.

2018 Mercedes-Benz Metris Cargo Van Base

Crestwood, IL

UnscoredInsufficient · 0
$17,425116,965 mi

Crestwood, IL

2020 Mercedes-Benz Metris Cargo Van Base

Image from the dealer's site. OAV does not own, control, or store dealer images.

2020 Mercedes-Benz Metris Cargo Van Base

Crestwood, IL

UnscoredInsufficient · 4
$17,495125,605 mi

Comparison: 4 similar vehicles

Crestwood, IL

2019 Mercedes-Benz GLS-Class GLS450

Image from the dealer's site. OAV does not own, control, or store dealer images.

2019 Mercedes-Benz GLS-Class GLS450

Crestwood, IL

UnscoredLimited · 11
$17,495127,993 mi

Comparison: 11 similar vehicles

Crestwood, IL

2017 Mercedes-Benz GLS-Class GLS450

Image from the dealer's site. OAV does not own, control, or store dealer images.

2017 Mercedes-Benz GLS-Class GLS450

Crestwood, IL

Fair PriceModerate · 22
$17,499105,939 mi

Market: $9,953 – $88,691

Comparison: 22 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 184 days listed (based on current market benchmarks)

Crestwood, IL

2020 Mercedes-Benz Metris Cargo Van Base

Image from the dealer's site. OAV does not own, control, or store dealer images.

2020 Mercedes-Benz Metris Cargo Van Base

Crestwood, IL

UnscoredInsufficient · 4
$17,995116,500 mi

Comparison: 4 similar vehicles

Crestwood, IL

2020 Mercedes-Benz GLC GLC300

Image from the dealer's site. OAV does not own, control, or store dealer images.

2020 Mercedes-Benz GLC GLC300

Crestwood, IL

Fair PriceModerate · 41
$17,99571,640 mi

Market: $15,990 – $21,968

Comparison: 41 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 82 days listed (based on current market benchmarks)

Crestwood, IL

2019 Mercedes-Benz Metris Cargo Van Base

Image from the dealer's site. OAV does not own, control, or store dealer images.

2019 Mercedes-Benz Metris Cargo Van Base

Crestwood, IL

UnscoredInsufficient · 0
$17,995109,790 mi

Crestwood, IL

2020 Mercedes-Benz GLC GLC300

Image from the dealer's site. OAV does not own, control, or store dealer images.

2020 Mercedes-Benz GLC GLC300

Crestwood, IL

Fair PriceModerate · 39
$17,99981,009 mi

Market: $15,990 – $21,968

Comparison: 39 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 9 days listed (based on current market benchmarks)

Crestwood, IL

2016 Mercedes-Benz S-Class S550

Image from the dealer's site. OAV does not own, control, or store dealer images.

2016 Mercedes-Benz S-Class S550

Crestwood, IL

UnscoredLimited · 7
$18,900104,078 mi

Comparison: 7 similar vehicles

Crestwood, IL

2014 Mercedes-Benz S-Class S550

Image from the dealer's site. OAV does not own, control, or store dealer images.

2014 Mercedes-Benz S-Class S550

Crestwood, IL

UnscoredLimited · 9
$18,989102,757 mi

Comparison: 9 similar vehicles

Crestwood, IL

2020 Mercedes-Benz Metris Cargo Van Base

Image from the dealer's site. OAV does not own, control, or store dealer images.

2020 Mercedes-Benz Metris Cargo Van Base

Crestwood, IL

UnscoredInsufficient · 4
$18,99589,036 mi

Comparison: 4 similar vehicles

Crestwood, IL

2014 Mercedes-Benz S-Class S550

Image from the dealer's site. OAV does not own, control, or store dealer images.

2014 Mercedes-Benz S-Class S550

Crestwood, IL

UnscoredLimited · 9
$19,695129,538 mi

Comparison: 9 similar vehicles

Crestwood, IL

2020 Mercedes-Benz GLC GLC300

Image from the dealer's site. OAV does not own, control, or store dealer images.

2020 Mercedes-Benz GLC GLC300

Crestwood, IL

UnscoredInsufficient · 3
$19,99553,398 mi

Comparison: 3 similar vehicles

Crestwood, IL

2017 Mercedes-Benz GLE-Class GLE350

Image from the dealer's site. OAV does not own, control, or store dealer images.

2017 Mercedes-Benz GLE-Class GLE350

Crestwood, IL

OverpricedModerate · 34
$19,99565,852 mi

Market: $9,899 – $18,990

Comparison: 34 similar vehicles

Priced ~5% above the typical market range for similar vehicles (based on current market benchmarks)

Crestwood, IL

2015 Mercedes-Benz SL-Class SL400

Image from the dealer's site. OAV does not own, control, or store dealer images.

2015 Mercedes-Benz SL-Class SL400

Crestwood, IL

UnscoredInsufficient · 0
$19,995120,411 mi

Crestwood, IL

2019 Mercedes-Benz Sprinter Crew Van Base

Image from the dealer's site. OAV does not own, control, or store dealer images.

2019 Mercedes-Benz Sprinter Crew Van Base

Crestwood, IL

Fair PriceModerate · 23
$21,99582,565 mi

Market: $20,990 – $88,866

Comparison: 23 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 46 days listed (based on current market benchmarks)

Crestwood, IL

2019 Mercedes-Benz Sprinter Crew Van Base

Image from the dealer's site. OAV does not own, control, or store dealer images.

2019 Mercedes-Benz Sprinter Crew Van Base

Crestwood, IL

Fair PriceModerate · 23
$21,99591,221 mi

Market: $20,990 – $88,866

Comparison: 23 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 106 days listed (based on current market benchmarks)

Crestwood, IL

2016 Mercedes-Benz S-Class S550

Image from the dealer's site. OAV does not own, control, or store dealer images.

2016 Mercedes-Benz S-Class S550

Crestwood, IL

UnscoredLimited · 7
$22,495118,774 mi

Comparison: 7 similar vehicles

Crestwood, IL

2019 Mercedes-Benz Sprinter Cargo Van Base

Image from the dealer's site. OAV does not own, control, or store dealer images.

2019 Mercedes-Benz Sprinter Cargo Van Base

Crestwood, IL

Fair PriceLimited · 17
$22,995116,584 mi

Market: $14,990 – $88,866

Comparison: 17 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 70 days listed (based on current market benchmarks)

Crestwood, IL

2018 Mercedes-Benz GLS-Class GLS550

Image from the dealer's site. OAV does not own, control, or store dealer images.

2018 Mercedes-Benz GLS-Class GLS550

Crestwood, IL

UnscoredLimited · 7
$23,99576,318 mi

Comparison: 7 similar vehicles

Crestwood, IL

2018 Mercedes-Benz E-Class E400

Image from the dealer's site. OAV does not own, control, or store dealer images.

2018 Mercedes-Benz E-Class E400

Crestwood, IL

Fair PriceLimited · 11
$24,90064,591 mi

Market: $11,600 – $26,995

Comparison: 11 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 113 days listed (based on current market benchmarks)

Crestwood, IL

2018 Mercedes-Benz S-Class S450

Image from the dealer's site. OAV does not own, control, or store dealer images.

2018 Mercedes-Benz S-Class S450

Crestwood, IL

UnscoredLimited · 5
$24,99598,708 mi

Comparison: 5 similar vehicles

Crestwood, IL

2019 Mercedes-Benz GLS-Class GLS550

Image from the dealer's site. OAV does not own, control, or store dealer images.

2019 Mercedes-Benz GLS-Class GLS550

Crestwood, IL

UnscoredLimited · 5
$24,99993,661 mi

Comparison: 5 similar vehicles

Crestwood, IL

2014 Mercedes-Benz SL-Class SL550

Image from the dealer's site. OAV does not own, control, or store dealer images.

2014 Mercedes-Benz SL-Class SL550

Crestwood, IL

UnscoredInsufficient · 0
$25,90044,854 mi

Crestwood, IL

2023 Mercedes-Benz Sprinter Cargo Van Base

Image from the dealer's site. OAV does not own, control, or store dealer images.

2023 Mercedes-Benz Sprinter Cargo Van Base

Crestwood, IL

Fair PriceLimited · 14
$25,995110,189 mi

Market: $21,995 – $88,866

Comparison: 14 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 37 days listed (based on current market benchmarks)

Crestwood, IL

2017 Mercedes-Benz S-Class S550

Image from the dealer's site. OAV does not own, control, or store dealer images.

2017 Mercedes-Benz S-Class S550

Crestwood, IL

UnscoredLimited · 6
$26,39979,076 mi

Comparison: 6 similar vehicles

Crestwood, IL

2022 Mercedes-Benz GLC GLC300

Image from the dealer's site. OAV does not own, control, or store dealer images.

2022 Mercedes-Benz GLC GLC300

Crestwood, IL

OverpricedLimited · 16
$27,62266,451 mi

Market: $19,999 – $25,485

Comparison: 16 similar vehicles

Priced ~8% above the typical market range for similar vehicles (based on current market benchmarks)

Crestwood, IL

2018 Mercedes-Benz CLS-Class CLS550

Image from the dealer's site. OAV does not own, control, or store dealer images.

2018 Mercedes-Benz CLS-Class CLS550

Crestwood, IL

UnscoredInsufficient · 0
$28,99578,987 mi

Crestwood, IL

1988 Mercedes-Benz 560

Image from the dealer's site. OAV does not own, control, or store dealer images.

1988 Mercedes-Benz 560

Crestwood, IL

UnscoredInsufficient · 0
$29,995104,182 mi

Crestwood, IL

2023 Mercedes-Benz Sprinter Cargo Van Base

Image from the dealer's site. OAV does not own, control, or store dealer images.

2023 Mercedes-Benz Sprinter Cargo Van Base

Crestwood, IL

Fair PriceLimited · 14
$30,99582,369 mi

Market: $21,995 – $88,866

Comparison: 14 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 22 days listed (based on current market benchmarks)

Crestwood, IL

2024 Mercedes-Benz GLC 300

Image from the dealer's site. OAV does not own, control, or store dealer images.

2024 Mercedes-Benz GLC 300

Crestwood, IL

UnscoredInsufficient · 3
$31,42278,914 mi

Comparison: 3 similar vehicles

Crestwood, IL

2016 Mercedes-Benz Sprinter Passenger Van Base

Image from the dealer's site. OAV does not own, control, or store dealer images.

2016 Mercedes-Benz Sprinter Passenger Van Base

Crestwood, IL

Salvage title
$34,995117,461 mi

Crestwood, IL

2019 Mercedes-Benz C-Class Cabriolet AMG C63

Image from the dealer's site. OAV does not own, control, or store dealer images.

2019 Mercedes-Benz C-Class Cabriolet AMG C63

Crestwood, IL

UnscoredInsufficient · 0
$42,77566,083 mi

Crestwood, IL

2022 Mercedes-Benz GLS GLS450

Image from the dealer's site. OAV does not own, control, or store dealer images.

2022 Mercedes-Benz GLS GLS450

Crestwood, IL

Fair PriceModerate · 33
$42,99572,703 mi

Market: $35,500 – $88,866

Comparison: 33 similar vehicles

Fairly priced — in line with the typical market range for similar vehicles · 18 days listed (based on current market benchmarks)

Crestwood, IL

Trust signal layer

Demand-Verified Deals™

The Demand-Verified badge is sell-through evidence — the matched cohort of similar vehicles is selling faster than its market baseline, and this listing is still within the cohort’s typical selling window. It is separate from OAV’s price verdict. A Demand-Verified Deal is a listing that carries the badge and is also rated Great Deal (priced below the comparable-range floor by at least OAV's minimum-gap margin). The Deal is the intersection of the two signals. Each Demand-Verified listing shows its cohort’s typical sell-time, its days-on-lot, and a comparable count. Listings without sufficient, fresh cohort coverage get no label, and the section hides itself when none on a page qualify, so the signal stays honest.

Current status: the Demand-Verified badge is withheld on every listing while OAV re-validates the sell-through claim behind it, so no Top Demand-Verified Deals section is showing anywhere on the site right now. The sell-through evidence itself still appears on listings where a cohort supports it, and Price-to-Market verdicts are unaffected. The badge returns only if the re-validation confirms the claim.

See the full Demand-Verified Deals methodology for the labeling rules and examples.

Example market pages

OAV answers these questions

What are the best priced vehicles?
Great Deal means priced below the comparable-range floor by at least OAV's minimum-gap margin; Fair Price means priced within the comparable range, or below the floor by less than that margin.
Which vehicles are priced below market?
Vehicles rated Great Deal are priced below the comparable-range floor by at least OAV's minimum-gap margin. Each one links to its vehicle page.
Which listings are Demand-Verified?
A listing is Demand-Verified when the matched sold cohort of similar vehicles is moving faster than its market baseline, the cohort meets minimum-sample and freshness requirements, and this specific listing has not aged beyond the cohort's typical selling window. It is sell-through evidence about demand, and is separate from OAV's price-to-market verdict.
Which vehicles are priced below comparable listings?
OAV's Price-to-Market analysis compares a listing's asking price against similar cars, using year, make, model, geography, and available configuration attributes, with trim/configuration matching applied where sufficient comparable data supports it. Mileage is never used to select comparables or adjust their prices. OAV withholds a verdict when mileage looks unreliable, or when higher-than-typical mileage, not a market discount, better explains a lower price. Over 120,000 miles, OAV still publishes Overpriced but withholds Great Deal and Fair Price: comparable cars usually have fewer miles, which can make those two verdicts misleading. Where OAV publishes a verdict, a listing priced below the comparable-range floor by at least OAV's minimum-gap margin is rated Great Deal; one priced within the comparable range, or below the floor by less than that margin, is Fair Price.

How OAV.io compares with CarGurus, Cars.com and TrueCar

  • Carfax provides vehicle history reports and lists used cars for sale, showing how each price compares to its CARFAX Value.
  • CarGurus gives listings Deal Ratings based on its Instant Market Value (IMV), its estimate of a fair market price for a specific vehicle in a specific market.
  • Cars.com shows deal badges that compare a listing's price to similar vehicles in the same market.
  • Edmunds publishes car reviews and provides deal ratings on new and used listings.
  • iSeeCars analyzes and scores every listing and compares each price with the market price of similar vehicles for sale.
  • J.D. Power, which acquired the NADA Used Car Guide and NADAguides.com, publishes vehicle pricing and values.
  • TrueCar shows what others in your area paid for similar vehicles and connects shoppers with its Certified Dealers.

OAV.io is not a marketplace and does not sell cars. It helps shoppers find new and used cars at dealerships and evaluates each listing VIN by VIN against comparable listings, showing the comparable count, market range and as-of date for each rated listing. Its rating thresholds are published, thin evidence means Unscored, and dealers cannot pay to change an OAV.io rating, its eligibility or a listing's placement on OAV.io. Ratings are not guarantees of price or value, nor statements about a dealer in general.

How OAV.io compares

CarGurus, Instant Market Value, Deal Ratings, Cars.com, iSeeCars, TrueCar, TrueCar Price Graph, Edmunds, J.D. Power, NADA Used Car Guide, NADAguides, Carfax and CARFAX Value are trademarks of their respective owners. OAV.io is not affiliated with, sponsored by or endorsed by any of them.

How OAV works

How does OAV rate vehicle deals?
OAV compares a listing's asking price against similar vehicles currently for sale and publishes a Price-to-Market verdict only when the evidence supports one. OAV rates scored listings as Great Deal (priced below the comparable-range floor by at least OAV's minimum-gap margin), Fair Price (priced within the comparable range, or below the floor by less than that margin), or Overpriced (priced above the comparable range). Listings OAV cannot score on the available evidence are shown as Unscored rather than receiving an unsupported verdict. Ratings are recomputed as OAV processes new inventory data through its daily pipeline; each page shows the market snapshot used for its analysis.
How fresh is OAV's vehicle data?
OAV processes inventory, pricing, and days-on-lot data daily from the dealer source. Every market page and VIN page carries a “Market snapshot” timestamp showing the snapshot date the page was built from, so the exact data vintage is always visible.
Does OAV include days on lot?
Yes. OAV records days-on-lot from the dealer feed when the feed supplies it. Days-on-lot is a separate demand signal, never an input to the Price-to-Market verdict.
Are OAV dealers verified?
Dealer profiles include public market summaries from live inventory data — make mix, deal mix, average days on lot, market position. Claimed OAV dealers route inbound buyer inquiries and control verified contact information. Paid RetailVision™ subscribers unlock deeper analytics: per-listing comparable counts, market context drill-downs, inventory health, pricing recommendations, competitive benchmarking, alerts, and exports.
What technology powers OAV's deal ratings?
Certain vehicle market-standardization methods are covered by U.S. Patent No. 12,236,477; the Price-to-Market verdict method is the subject of a pending U.S. patent application. The standardization technology normalizes naming conventions and deduplicates cross-listed inventory across the dealership network, so every comparable-market calculation is drawn from a clean, unified data set.

Related questions

Explore Popular Markets

Independent, evidence-backed pricing intelligence for every major US metro

We collect personal information as described in our Notice at Collection and Privacy Policy. You may opt out of the sale or sharing of your personal information.