Le Club 404 is a community dedicated to enthusiasts of the Peugeot 404, bringing owners and admirers together to share knowledge, technical expertise, and a passion for classic motoring. Its aim is to ensure that members can find support when facing specific questions or challenges, drawing on the skills and goodwill of the wider group. The club also encourages conviviality, mutual assistance, and participation in events.

Membership costs €50 for one year from the date the application is registered. Prospective members can apply online or use a paper contact form, with an enrolment tutorial available to guide them. The club maintains a forum and provides resources for 404 enthusiasts, including a buying guide, information on identifying and maintaining a car, details about production and colours, period advertising, books, spare parts, and useful contacts. Members can also explore club merchandise, local gathering points, annual meetings, photographs, and a reference library.

The Club 404 attends classic-vehicle shows and organises outings and events, sharing reports and updates with its community.