The Voisin C22 was a large passenger car built between 1931 and 1935.

The C22 was released alongside the C20 V12 at the 1930 Paris Motor Show. The C22 was rated fiscally as 33CV.

The car was equally impressive and available in the same body styles. The C22 was powered by a 5,830cc straight six engine based on the C16 unit instead of the V12. The top speed of the C22 was 160km/h.

The bare 33CV chassis was coded Siroco. Like its 12-cylinder stablemate, the wheelbase of the 33CV was lengthened to 3.71m in 1931, together with revisions to the axle.

The occupants were sat centrally within the wheelbase, with deep footwells nicknamed 'foot baths' on either side of the deep transmission tunnel. The low centre of gravity of the underslung chassis added to the car's stability and handling agility despite its size.