Methodology · How the answer is made
See how we reach the answer.
Every estimate includes a range and its evidence basis. We distinguish checked completed sales from directional price records and modeled estimates. A modeled trend is not a sale history.
- Completed sales
- Value and range
- Asking prices
On this page
1. Start with cars that sold
Before we use a completed sale, we check the car, final price, source, and our right to use the fact.
Exotic Index keeps a record of completed exotic-car sales. We check the car, final price, and our right to use each fact before it affects a public result. We use those sales to estimate value, value loss, mileage cost, and the result for a listing. We do not copy or republish source listings. Every estimate shows a price range and how many similar cars support it.
2. Compare similar cars
We compare similar cars and account for mileage. We then estimate a typical value and a price range. Fewer similar sales produce a wider range.
3. Compare the asking price
Value Check compares the asking price with the range and gives you a price to aim for. Deal Score rates the listing price and details, not the car itself. The result is Buy, Fair, Stretch, Walk, or Check.
A price far below the range returns Check. Verify the title, history, condition, and the seller’s claims.
Rules that protect the answer
We follow these rules:
- We never copy source listings, photos, or descriptions. We record facts (price, date, mileage) and do the math ourselves.
- We never use another company’s opinion of a car’s value. We use facts and do our own analysis.
- We never pass your information to dealers.
- We make no investment claims. This information supports car purchases.
This site gives price estimates for car buyers. It is not an appraisal, financial advice, investment advice, or an offer to buy or sell a car.