The main part of the model is the Cummins ISLe4 engine with 8.9 litre displacement which generates 248 kW (340 HP) of power.

The system also uses the produced energy when braking, which is accumulated in a nickel-metal hydride batteries located on the roof in the front of the vehicle.

[4] In 2007 3 buses were sold to Leipzig and Bochum (delivered in January 2008) in Germany and Lenzburg in the Swiss canton of Aargau.

In second half of 2008 the Solaris Urbino 18 Hybrid model went through several levels of modernisation and now it is considered to be at the second generation by the producer.

Due to this the model has also undergone a makeover of the general body, such as the aerodynamics, meaning only an air conditioning module can be fitted on the front of the bus.

The hybrid power system of the second generation without includes besides the diesel engine the following elements: Ev, batteries, DPIM, and a control module.

The Ev system looks like an ordinary transmission where the torque summation of the internal combustion engine and the electric motor is performed.

Rechargeable nickel-metal hydride batteries weighing 410 kg store energy recovered during the braking process.

The first of these controls manage the operation of the hybrid engine, while the second unit is responsible for cooperation of the other vehicle systems.

However the model was only presented in February 2011, when the company began its annual Transdev tests in Paris.

The bus model Solaris Urbino 18 Hybrid MetroStyle in 2011, was also tested in Grudziądz in Poland.

The bus model has a completely new design of the front and rear panels, referring to the Solaris tram Tramino styling.

[11] In the autumn of 2010 debuted the new German company Vossloh Kiepe hybrid system model.

There has been fitted a two screen information panel which shows a visualisation of the state of the hybrid power system.

[14] At the end of 2010 the new model Solaris Urbino DIWAhybrid was fitted with a hybrid power system from Voith Turbo.