Sao Vicente has a bus service. But it is restricted to Mindelo. Aluguers are less common than on Sal. They usually travel between outlying villages and the main town early morning and late afternoon carrying commuters.There may not be a service at all at midday. Taxis can be found in the main squarte outside the Hotel Porto Grande. So hiring a car may be the best solution.
Suziukis or Terios are available at around £300 per week delivered to the airport or to an hotel in Mindelo.