system which included the lithium-ion battery pack and electric motor and helped develop the power management logic and controls. The first five prototype vehicles were deployed by DHL to conduct tests and the first 50 vehicles were sold at the end of 2009. Series production was scheduled to start in 2010. The initial hybrid truck was based on the 12-ton Atego 1222 L EEV and featured a OM 924 LA turbodiesel engine and a 44-kW water-cooled AC permanent magnet electric motor. The engine also featured a start/stop system. It used a G85-6 automatic transmission. The electric motor was located behind the internal combustion engine and clutch, but in front of the transmission. Electrical energy was stored in lithium-ion batteries, which was fed via the electric motor when braking and allowed moving off under electric power, but also helped optimise the diesel engine's characteristic map. Additional components included a converter, hybrid control system and cooling system. The additional weight compared to a regular Atego was around 350 kg. According to Daimler the Atego hybrid could achieve fuel savings of around 10 - 15 percent compared with an equivalent conventional diesel-powered vehicle. Coaches The chassis of the Atego is also used by Unvi to produce 27-41 seat coaches, designated Cimo, Voyger GT and Touring GT, which are custom built in Spain. Polish coach company Automet produced a 30-36 seat coach, the Apollo, based on this chassis. Also, Chilean coachbuilder LR bodied some midibuses on the Atego 1016 chassis. The cab area and dashboard on the coach conversions are identical to those used in the Atego goods vehicles. Third generation (2013) The third generation Atego was introduced in 2013 with gross vehicle weight ranging from 6.5 t to 16 t. It was made available with seven new engines based on the inline four-cylinder OM 934 model with 5.1 L displacement and inline six-cylinder OM 936 model with 7.7 L displacement. Performance for the four new OM 934 engines range from to and for the three new OM 936 engines from to . The engines conform to the Euro VI emissions standard and feature common rail injection, cooled exhaust gas recirculation, an exhaust box with an integrated selective catalytic reduction system and closed particulate filter. The trucks are available with six or eight speed Mercedes PowerShift 3 automatic transmission and six- or nine-speed power-assisted manual transmissions. Electronic stability control is also available along with