Tesla has emerged as the cheapest car brand to maintain with a 10-year maintenance and repair cost of $4,035, according to Consumer Reports. Buick and Toyota had the second lowest maintenance cost of $4,900, followed by Lincoln ($5,040), Ford ($5,400) and Chevrolet ($5,550). German brands Porsche, Mercedes-Benz, Audi and BMW ranked as some of the most expensive ones to maintain.