Car Research

Porsche will be paying close attention to North American market forces over the next little while to decide when and where to launch the Cayenne diesel and hybrid models. (Shaun Keenan/AUTONET)
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On the road, the diesel Cayenne it’s clearly a Porsche - ride quality is top notch and the interior features and amenities are what you’d expect. Engine, wind and road noise are virtually non-existent, though stabbing at the throttle will provoke a growl from the dual exhaust system. There’s a slight delay in throttle response, but nothing scary. (Shaun Keenan/AUTONET)
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At a glance, the diesel engine looks the same as its V6 petrol counterpart. However, it features a 240 hp three-litre V6 turbo diesel that makes 405 lb.-ft. of torque at just 2,000 rpm and relies on Porsche’s Tiptronic S six-speed transmission to put it down to all four drive wheels. The 100 litre fuel tank is said to accord a driving range of over 1,000 klicks. (Shaun Keenan/AUTONET)
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A Cayenne S Hybrid is also a part of Porsche’s desire to reduce its fleet fuel consumption, though Leiters admits hybrids are “still a niche technology.” He points out this prototype is a “full parallel hybrid” vehicle and not a mild hybrid, which is what the majority of other automakers presently offer. (Shaun Keenan/AUTONET)
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The heart of the system, the Hybrid Manager computer, controls the interaction between the three main components (combustion engine, electric motor and the battery), monitoring more than three times the data of a conventional ECU. (Shaun Keenan/AUTONET)
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Porsche says the average combined fuel consumption of the Cayenne diesel is 9.3 L/100 km, based on the European driving cycle (NEDC), which is quite good for a 2,240 kilogram (4,493 pound) vehicle that can still scoot from zero-to-100 km/h in 8.3 seconds. (Shaun Keenan/AUTONET)
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