The five-passenger SUV is technically slick and remarkably fast, as Porsches are supposed to be, with on-road handling that belies (though does not defy) its mass. The Cayenne also delivers what most SUV buyers demand: more cargo space than the typical sedan, more than enough capability for off-highway use and impressive towing capacity. For style, pure performance and a balance of sport-utility virtues, the Porsche Cayenne is tough to beat. The Cayenne S comes with Porsche's 4.5-liter dohc V8 engine that delivers 340 horsepower and the Tiptronic automatic. They come standard with leather seating with 12-way power adjustment comes standard, along with titanium interior trim, manually controlled climate control with charcoal and micro-particle cabin filtration, heated retractable exterior mirrors, multi-function trip computer, 12-speaker stereo with CD, air conditioned glove compartment, cruise control, insulated laminated privacy glass, Homelink, immobilizer anti-theft alarm, and an electronically latching tailgate. The Cayenne S adds automatic climate control with dual front-passenger settings and a 350-watt, 14-speaker Bose stereo. Safety features on all models include electronic stability control, traction control and the latest-generation antilock brakes. Six airbags come standard: dual-stage front (newest generation for 2006) and side-impact airbags for front passengers, and curtain-style head protection airbags on both sides of the cabin. All five seating positions have three-point belts with pretensioners to instantly tighten them and limit stretching on impact. The front belts also have automatic force limiters, reducing potential for belt-related injuries.