DB Class 218.9 resulted from the Deutsche Bundesbahn's flirtation with diesel locomotives boosted by gas turbine engines in the 1970s. Problems with gas turbine engine lifespan, and reduced fuel efficiency, coupled with two turbine failures resulted in the small class of eight Class 210 machines being rebuilt as class 218.9 at the beginning of the 1980s. This subclass was number 218-901 to 218-908. They were decommissioned and scrapped between 2004 and 2006. DB AG Series 210.4 A second set of locomotives designated Class 210 was created by the Deutsche Bahn AG in 1996 for the inter-city line from Munich via Berlin to Hamburg with non powered driving trailers, on which the original Class 120 was used. Between the stations of Nauen and 'Berlin Zoological Gardens' the route was only partially electrified; in this electrification gap the train (complete with a DB Class 120 E-Lok) was towed by the diesels. In 1996 the machines for this task were created from locomotives 218 430 to 434 and 218 456 to 462 which were stationed in Lübeck and were in particularly good condition. For this task the locomotives needed to be approved for running at 160 km/h (the same maximum speed at which the original Class 210 had run). The original hydraulic transmission was rated in its upper gear to 160 km/h, but the drive shafts needed to be uprated for the increased speed.. The individual locomotive numbers were preserved - thus DB 218 430 became DB 210 430. Following the full electrification of the line the locomotives returned to normal stock duties, in December 1998 the locomotives were rebuilt again and became Class 218 machines once again. DB AG Series 218.8 15 locomotives were converted (in Bremen) for towing and shunting tasks - being fitted with a Scharfenberg coupler for modern coaching stock, they are used on the S-Bahn networks; found in all the major railway stations. 218 228 is found in the S-Bahn area of Frankfurt, 218 191 in the S-Bahn around Stuttgart, others at Darmstadt and Plochingen (218 191). Some of this sub-class were equipped for towing ICE trains, and used in multiple on the new (rebuilt) lines of Cologne-Rhine Main and Nuremberg-Ingolstadt. These 15 locomotives are based at the locomotive depots at Frankfurt/Main (nine locomotives) and Berlin-Rummelsburg (six locomotives). DB AG Series 225.8 Class 215 and Class 218 locomotives transferred to DB Railion for freight work were renumbered as