Launched in October 1931, the Monaquatre was similar in design to Renault Primaquatre large family car with which it shared its 2,650 mm (104.3 in) wheelbase.

In October 1933 the type YN2 appeared at the Paris Motor Show, featuring a redesigned bonnet, the angle of the radiator grill being now a little more raked.

[1] The YN2 was a transitional model, the manufacturer having already decided to fit "aérodynamique" bodies with fashionably sloping tails replacing the very vertical rear ends of the existing cars.

[1] By this time the Monaquatre was offered a choice from seven different body types, including 4-door berlines with four or six side windows and, at the top in terms of price, a 2-door 2-seat cabriolet.

[1] The YN2 was produced for only three months before the new more aerodynamic Type YN3 appeared at the start of 1934, initially with just two body styles from which to choose.