Maxi is an older yellow Formula 1 type racing car who was the star of Silver Hatch before Roary arrived. He is temperamental and expects the best of everything - including first use of the tyre warmers. He wears sunglasses and a blue cap and sports the number 5. Maxi is Italian and is the favorite of Mr Carburettor. Maxi's catchphrase is "Mamma Mia!" He speaks in an Italian accent, although this is de-emphasized in the US voiceover. When starting a race Maxi can make flames erupt from his exhaust. There is a healthy sibling rivalry between Maxi and Roary. Tigger refers to him as "Maxi boy", which Maxi likes that nickname very much.
- Maxi will meet Winnie the Pooh and his friends in Winnie the Pooh Meets Roary the Racing Car (TV Series).
- Maxi was also great friends with George, Gordon, Skidmark and Rainbow Dash.