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.
© 2014 Porsche Cars Great Britain Ltd. Legal notice.
* The latest Porsche models are designed to operate on fuels with an ethanol content of up to 10%. Data determined for standard specification and in the NEDC (New European Driving Cycle) in accordance with the Euro 5 and Euro 6 (715/2007/EC and 692/2008/EC) measurement method. The figures do not refer to an individual vehicle nor do they constitute part of the offer. They are intended solely as a means of comparing different types of vehicle. You can obtain further information about individual vehicles from your Porsche Centre.
Consumption figures were obtained on the basis of standard equipment. Special equipment may affect consumption and performance.