The IFA F9, subsequently rebadged as the EMW 309, is a compact saloon manufactured under the auspices of the Russian and East German states between 1949 or 1950 and 1956.

The body closely followed the design of the DKW F9, a prototype with which Auto Union would have replaced the F8 on the Zwickau production lines earlier, had the war not intervened.

The Western group, however, had access to the original F9 body tooling which had been ordered before the war and had been produced but neither delivered to Zwickau nor scrapped, instead remaining at supplier Allgaier's facility in Uhingen, Baden-Wuerttemberg.

Steel for consumer industries was in short supply across many parts of Europe during this period, and the F9’s body construction increasingly involved plastic panels, especially after production was moved to Eisenach in 1953.

The F9 featured a three-cylinder two-stroke water-cooled engine of 910 cc with a claimed output, at launch, of 28 bhp (21 kW).