The Cayenne S Diesel features a double-flow exhaust system, with each exhaust tract comprising an oxidation catalyst fitted close to the engine and a diesel particulate filter. In order to minimise thermal losses and ensure that the system is working under ideal conditions, the pipes are completely air-gap insulated. Due to the rapid warm-up of the catalytic converters, the optimum operating temperature is reached earlier so emissions are reduced sooner when starting from cold.
The exhaust-gas recirculation on the Cayenne S Diesel routes part of the exhaust gas back into the combustion process, resulting in lower peak combustion temperature and therefore lower nitrogen oxide emissions.
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* These data were obtained using the Euro 5 measurement method (715/2007/EC and 692/2008/EC) in the NEDC (New European Driving Cycle) with standard equipment. The information does not refer to an individual vehicle and is not part of the offer, but is simply provided so that comparisons can be made between different types of vehicle. Further, up to date information on the individual vehicles can be obtained from your Porsche Centre.
Consumption figures were obtained on the basis of standard equipment. Special equipment may affect consumption and performance.