The Porsche Cayenne Diesel was officially introduced today in the United States and easily became one of the most fuel-efficient SUVs in Porsche’s lineup. As expected, the 2013 Cayenne Diesel is powered by Audi’s 3.0-liter V6 turbo diesel engine capable to deliver 240-hp and 406 lb.-ft. of torque, available from as low as 1,750 rpm.
With these numbers, the Cayenne is able to hit 60 mph (96 km/h) in 7.2 seconds and has a top speed of 135 mph or 217 km/h. Moreover, the 2013 Porsche Cayenne Diesel has an estimated fuel consumption of 20 mpg city / 28 mpg highway / 23 combined. This means that the Cayenne Diesel will be able to travel up to 740 miles on a single tank of fuel.
Final figures will be confirmed closer to the start of sales later in 2012. According to Porsche, the Cayenne Diesel is built to meet the Tier 2 Bin 5 emission standards, and includes selective catalytic reduction (SCR) technology.
For those folks who don’t know, the SCR system is comprised of an AdBlue tank located in the car's spare-wheel well, a heating system for this tank and the lines which carry the AdBlue, an injection valve for AdBlue fluid and a selective catalytic reduction converter used for the reduction of NOx (oxides of nitrogen) emissions. The diesel engine is mated to an 8-speed Tiptronic S transmission and doesn’t feature the Auto Start/Stop function available on other Cayenne variants.
Just like the Cayenne S Hybrid, the Cayenne Diesel includes Porsche Traction Management (PTM), which features permanent all-wheel drive. Some of the standard features found on the Cayenne Diesel is a system which protects the driver from fueling the vehicle with the incorrect fuel.
A mechanical safeguard in the fuel tank filler neck ensures that the locking mechanism can only be opened by the larger diameter diesel fuel pump nozzle and that refueling will only begin at that point. The Porsche Cayenne Diesel has a base MSRP price of $55,750, not including a $975 destination charge.