CarComplaints.com has 3 complaints on file for Proton vehicles.

The worst models are the 2020 Persona, 2012 Preve, and the 2013 Preve. We don't have many complaints on file for Proton — feel free to add yours. It's either not very popular, or it's very very good.

Click on the bars of the graph for more details about a specific model year.