The Cayenne models are all equipped with the latest emissions technology. As a result, they comply with the European exhaust emissions standard, EU 5.
Whatever the class, every Porsche combines high performance with comparatively moderate emissions. On the Cayenne models, this is achieved using advanced drive concepts – from petrol and diesel engines to our parallel full hybrid drive. This is further aided by the rapid warm-up cycle of the catalytic converters. The optimum operating temperature is reached earlier so emissions are reduced sooner when starting from cold.
On the petrol-engined and hybrid models, another important feature is the use of twin oxygen-sensor circuits. Each bank of cylinders has a separate control system which the engine management system uses to establish the optimum amount of fuel – for effective emissions control.
The exhaust-gas recirculation on the Cayenne Diesel routes part of the exhaust gas back into the combustion process, resulting in lower peak combustion temperature and therefore lower nitrogen oxide emissions. An oxidation catalyst also forms an integral part of the process along with a diesel particulate filter.
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