The Mazda R360 was complemented by the more grown-up 2-door sedan Mazda P360 Carol in February 1962, the company's first 4-passenger car, and complemented the three-wheeled Mazda Mazdago. It was more substantial than the R360: although its total length of was the same, its wheelbase was considerably longer. The Carol weighed in at , versus for the diminutive R360. It used the DA, a , rear-mounted water-cooled 358 cc 4-cylinder OHV engine. This is one of the smallest four-cylinder automobile engines in history, only Honda's 356 cc DOHC alloy inline-four unit (used in the T360 truck) was smaller. The four-speed gearbox was synchronized only on the top three gears.