# CarPriceTracker > CarPriceTracker helps people research recorded car asking-price history by brand, model and recorded year. It also provides explanatory guides and free calculators that use the visitor's own inputs. The canonical website is https://www.carpricetracker.net/. Prices are dated asking-price observations, not verified transaction prices, current inventory or a personalized vehicle valuation. The same source advert can have several observations. Source-listing identifiers do not establish unique physical cars across websites. Model pages separate currencies and show the observation window, sample basis, source links and limitations. Currency alone does not identify a country. Historical means can change when the mix of observed adverts changes; they are not an individual vehicle's depreciation. Gaps and sparse samples limit interpretation. Vehicle identities can remain under review even when descriptive copy has been reviewed. Availability and the latest observation date must be checked on the relevant page and source advert. The depreciation calculator models entered assumptions or compares two entered values. The comparison calculator compares entered prices and costs. Neither is an automatic appraisal, a market forecast or a live listing search. No account is required for the public research pages or these calculators. The curated guides, publishing pages and tool descriptions below are also available as Markdown generated from the same content as their canonical HTML pages. Calculator results are available on the interactive HTML pages. ## Start here - [Car price tracker](https://www.carpricetracker.net/): Browse brands and follow model-year links to recorded asking-price histories. - [How our car price data works](https://www.carpricetracker.net/methodology.md): Observation definitions, calculation windows, currencies, source coverage, exclusions and known limits. - [How to read a car price history chart](https://www.carpricetracker.net/guides/read-car-price-history.md): Interpret averages, gaps and historical asking prices without treating them as completed sales. ## Car research guides - [Car research guides](https://www.carpricetracker.net/guides.md): Directory of the site's explanatory guides. - [Negotiate a used-car price](https://www.carpricetracker.net/guides/negotiate-used-car-price.md): Prepare comparable evidence and questions about total purchase costs. - [Understand car depreciation](https://www.carpricetracker.net/guides/car-depreciation.md): Distinguish entered depreciation scenarios, observed price history and market estimates. - [Estimate a used car's value](https://www.carpricetracker.net/guides/estimate-used-car-value.md): Explain different price concepts and the evidence needed to compare a vehicle. - [Compare used-car prices](https://www.carpricetracker.net/guides/compare-used-car-prices.md): Compare year, trim, condition, market and costs using suitable evidence. - [When to buy a used car](https://www.carpricetracker.net/guides/best-time-buy-used-car.md): Consider timing and available evidence without a guaranteed price forecast. ## Free calculators - [Free car research tools](https://www.carpricetracker.net/tools.md): Directory of calculators and their intended uses. - [Car depreciation calculator](https://www.carpricetracker.net/tools/car-depreciation-calculator.md): Calculate a constant-rate scenario or loss between entered values; no market depreciation rate is assumed. - [Car price comparison](https://www.carpricetracker.net/tools/car-price-comparison.md): Compare two or three entered asking prices, fees and immediate repair costs in one currency. ## Publisher and corrections - [About CarPriceTracker](https://www.carpricetracker.net/about.md): Product purpose and publishing responsibility. - [Report a price or vehicle error](https://www.carpricetracker.net/corrections.md): Information and supporting sources needed for an evidence-led correction. - [Contact CarPriceTracker](https://www.carpricetracker.net/contact.md): How to contact the publisher about a page or calculation. ## Optional - [Canonical sitemap](https://www.carpricetracker.net/sitemap.xml): Inventory of canonical public URLs selected by the site's publication rules. Inclusion does not certify every legacy vehicle identity or guarantee search indexing. - [Privacy policy](https://www.carpricetracker.net/policy.html): Published privacy and contact information. - [Terms](https://www.carpricetracker.net/terms.html): Published terms for use of the site.