Ronteix was a French car manufacturer based in Levallois-Perret, Seine, established by J. Ronteix. Although small in size, Ronteix vehicles were regarded more as light cars than true cyclecars, since they were never fitted with engines of less than four cylinders. The first model had a capacity of 905cc and used transverse leaf front suspension. It featured an unusual gear change system, in which a shaft from the clutch ended…