If you arrive in St Malo by ferry as foot passenger, you will find several hire car companies there.
Some are based at the port and the other ones can deliver cars to the port or pick you up and take you to their agency nearby.
You are best to shop around for the best deal and pre-book a hire car online.
Here are the companies you can find in St Malo:
Based at the ferry terminal:Tel. 02 99 40 58 68
Tel.0825 358 358 (Premium phone number !)
Based in St Malo :
Tel. 0825 861 862 (premium phone number!)
Tel. 02 23 18 00 00
Don’t forget your driving licence (permis de conduire)!
It doesn’t have to be a European licence. Your UK, Jersey, or Guernsey one will be fine.
A few words you might need when booking your French hire car:
Booster seat = réhausseur
Baby seat = siège auto
Automatic: automatique (pronounced the same!)
Second driver = deuxième conducteur