The British Rail Class 185 Desiro is a class of diesel-hydraulic multiple-unit (DHMU) passenger trains built by Siemens Transportation Systems in Germany for the train operating company First TransPennine Express. They are currently operated by TransPennine Express. A £260 million order for 51 three-car trains and associated maintenance depots was placed in 2003, and deliveries took place between 2006 and 2007.