After this conversion an order for 32 new vehicles of this type was delivered to Fuchs and BBC to be built from 1927 to 1933.

All units up to number ET 85 30 originally had front doors and gangways that were later removed.

In identical form and with the same internal layout - instead of the engine room, there was a luggage compartment - driving cars ES 85 01–34 appeared from 1927 to 1933.

These vehicles were not just employed in Munich suburban services but also by the Deutsche Bundesbahn in the Black Forest on the Three Lakes Railway and the Wehra Valley Line.

After re-motoring they were used on the inclined route from Berchtesgaden to Königssee and occasionally also on the Ammer Valley Railway.