SunnyPilot is a free, open-source driver assistance system that gives supported cars an enhanced, customisable driving experience. Built in the openpilot tradition, it supports more than 350 car makes and models and is known for its modified driving-assist behaviours and quality-of-life tweaks that enthusiasts prefer over stock settings. It has 2,150 stars on GitHub and is actively developed.
SunnyPilot is a community-driven fork in the openpilot ecosystem, designed to run on comma hardware in compatible vehicles. It follows comma.ai’s openpilot safety policy as closely as possible while layering on refinements: smoother engagement behaviour, more configurable longitudinal control, and a stream of community-tested improvements for specific car brands from Acura and Hyundai to Toyota and Volkswagen. Drivers choose it when they want openpilot’s proven foundation with more personal control over how the system behaves.
The project maintains its own release branches and a large community that tests builds across the supported fleet, documents quirks for specific models, and contributes improvements back upstream. Its popularity comes from polish: drivers often cite the calmer, more predictable feel of its assist behaviour on long highway drives compared with the stock experience, alongside conveniences the community has requested for years.
SunnyPilot is free and open source under the MIT license. You will need compatible comma hardware to run it in a vehicle, which is purchased separately from comma.
SunnyPilot is for driving enthusiasts and openpilot users who want more customisation from their driver-assistance system. It is advanced, safety-critical software: only install it on supported cars with the right hardware, and make sure you understand the responsibilities of using a community driving system.