Officially debuted the Mazda 3 i-stop with the Stop & Start technology. The engine MZR 2.0 DISI direct injection 151 hp power and 191 Nm of torque power the new Japanese version of the hatchback. The Mazda 3 i-sleep is characterized in its range for low emissions and reduced consumption. The car, in fact, consumes only 6.8 liters of fuel per 100 km, ie 14% less than normal petrol engine 2.0 indirect injection of the previous generation. The emission of CO2 is 159 g / km, with the Mazda 3 i-stop meets the Euro 5 standard. The manual six-speed gearbox, at the same time, it offers performance sports car from running.

To adapt the stop on an existing engine, it has been necessary only a few changes. Besides the adjustment of engine management system, is also required the presence of an exclusive intelligent sensor position of the crankshaft, more precise. The aid of this sensor allows the system to stop to stop the crankshaft in the ideal position for the restart, cutting through the injection of fuel, closing the throttle and using the alternator as a brake.

To ensure a reliable supply of electricity at any time, especially during the shutdown and restart the engine, the Mazda3 2.0-stop is provided with two batteries. The battery provides the main power supply generally, while the secondary battery is used only to restart the engine. When the stop-switch off the engine, lighting, sound system and all other electric utilities continue to operate, including the air conditioning system. The system Mazda gives the stop-start immediately to restart the engine, with a calculated time of restarted in just 0.35 seconds, two times faster compared with normal.

The new Mazda3 i-sleep is equipped with a new catalyst that uses single-nanotechnology to incorporate precious metal catalyst directly in the matrix of catalyst support, which offers enormous advantages over ordinary catalytic converter eliminates thermal degradation caused by ‘ aggregation of precious metals and significantly improves the performance of long-term treatment of emissions.