Motorwatch - Car Price Tracker is a Firefox extension designed for users interested in monitoring vehicle prices across various platforms. It supports tracking prices on popular sites such as Autotrader UK, Pistonheads, and MCN, among others. The tool allows users to keep an eye on cars, vans, bikes, and more, providing updates on price changes and trends, helping users make informed decisions when purchasing vehicles.

This subscription-based service boasts a database of over 11 million unique vehicles, with prices contributed and verified by users. It features an integrated MOT checker for added convenience. The extension prioritizes user privacy, requiring no personal information, and aims to foster trust by maintaining transparency regarding user reviews. Overall, it serves as a valuable resource for anyone looking to buy or sell vehicles.