Renault cars during this time period had two model lines; the economy four-cylinder engine models that in the 1930s became the suffix "Quatre" and the luxury six-cylinder models that were initially sold with the suffix "-six" that later became the suffix "Stella". For example, in 1928, when Renault produced 45,809 cars, its seven models started with a 6CV, a 10CV, the Monasix, 15CV, the Vivasix, the 18/22CV and the 40CV. Renault offered eight body styles. The longer rolling chassis were available to coachbuilders. The smaller were the most popular while the least produced was the 18/24CV. The most expensive body style in each range was the closed car. Roadsters and tourers (torpedoes) were the cheapest.