Porsche is launching the Cayenne into the new model year with more efficient second-generation diesel engine. The 3.0L V6 retains the same bore and displacement but now delivers 245 hp (180 kW), 5 hp (3.7 kW) more than before, while consuming 7.2 liters of diesel per 100 km (33 mpg US). CO2 emissions have dropped six grams to 189 g/km.
That puts the Cayenne Diesel back in position as the most economical Cayenne with the lowest carbon emissions. Naturally, the greater power has a knock-on effect on performance as well. For example, the acceleration time from 0 to 100 km/h (62 mph) has been cut to 7.6 seconds (minus 0.2 seconds) with top speed up two to 220 km/h (137 mph).
The improvements have been achieved through a package of measures, from the use of new materials to reduce weight, lower frictional resistance to a revamp of the injection system, along with a new turbocharger and enhanced thermal management.
In detail, the crankshaft for example has been redesigned; fewer counterweights and hollow bores make it lighter and thus more free-revving than before. Direct injection pressure increased by 200 to a maximum of 2000 bar, with a direct impact on the quality of mixture formation. The variable geometry turbocharger is also a new design with optimized bearings and a new compressor wheel, which translates into improved response and greater efficiency. The package of measures also sliced 20 kilograms off the weight of the V6 engine, cutting the unladen weight of the Cayenne Diesel to 2,080 kilograms.
Porsche is improving to the Cayenne S Hybrid as well—it offers even more specific driving experiences due to modifications to the hybrid manager. If the conditions are right, it is now possible even from a cold start to drive and manoeuvre at low speed on electric power alone. Previously, driving and manoeuvring on electric power after starting the engine was only possible once the operating temperature had been reached.