Top 10 Vehicles Causing the Most Accidents Published on June 20, 2023 in Top 10 by The Car Guide Photo: Toyota 2. Scion iA (sold as Toyota Yaris Sedan in Canada) Percentage of owners with at least one at-fault accident on their record: 11.5% This small car, now discontinued, was mainly aimed at young drivers and was actually a rebadged Mazda2 built in Mexico.