2011 Porsche Cayenne Hybrid

2011 Porsche Cayenne Hybrid
Photos by -Autonet.ca
HARRY PEGG
Published: 10 11 2011

The green apple in Porsche Cayenne's bushel

There’s an old adage about the apple not falling far from the tree and in the case of the 2011 Porsche Cayenne Hybrid, it’s certainly true.

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The Cayenne family tree has always been populated by performers but fuel mileage has not been a selling point; and topping up with primo dinosaur juice, can get costly. You might argue that if you’re laying out big bucks for a Porsche, you’re not going to worry overly much about fuel consumption but even the well-heeled can have an environmental conscience.

Enter the Hybrid, the green apple in the Cayenne bushel.

It looks the same as its sister cars on the outside - big wheels, dual exhausts and sleek-for-an-SUV lines. Only a “Hybrid” badge on the front quarter panels indicates that there’s a parallel hybrid system lurking under the skin. But on the inside, there lurks a green side.

The seating is leather-lined Porsche perfect and everything the driver looks at is pretty much the same except for a single gauge in the instrument cluster and an “e-power” button on the centre console.

Under the hood is a supercharged 3.0-litre V6 gasoline engine linked to an electric motor and a new eight-speed Tiptronic automatic transmission. The combination puts out a total of 380 horsepower and 428 lb.-ft. of torque. The 228-volt electric motor also acts as starter motor and alternator.

Supercharging puts 325 lb.-ft. of torque on tap between 3,000 and 5,250 rpm. There’s so much off-the-line oomph that I’m taken by surprise the first time I step on the gas. All that torque ensures I get past slower traffic in a hurry.

Search available trim options for the 2011 Porsche Cayenne

On the highway, the cabin is so quiet and the ride so smooth, that you don’t notice speed creeping up – until you glance at the speedometer.

I love the Tiptronic S transmission which incorporates an auto start/stop function. It runs effortlessly and seamlessly through its shift range, but I especially love the manual shift system. Instead of two paddles, there are two switches which let you shift up or down with either hand. I pull up with my index finger and the Tiptronic shifts down, push with my thumb, or just roll my hand inward, to select a higher gear.

Power gets to all four wheels via Porsche’s full-time all-wheel drive system with a self-locking centre differential. The standard torque split puts 60% of power to the rear wheels.

In hard cornering the torque management system adjusts available torque between the rear wheels. When I get into the twisty bits of a rural back road, it’s almost like being in a sports sedan. The cornering is flat and the response from the new electrohydraulic power steering is immediate.

Top speed is attained while in sixth gear. The two higher gears lower the rpm required to maintain the speed, meaning I get to go farther on a litre of fuel.

During the course of my time with the S Hybrid, fuel consumption with approximately equal highway and city driving averaged 8.4 litres per 100 km – exactly what the official estimates say.

Part of the reason is that, at higher speed, the engine under certain load conditions – or lack of load – the gas engine is automatically shut down and the hybrid effectively “coasts,” increasing efficiency.

Selecting “e-power” extends the battery-only range. The throttle map is adjusted so the gas engine engages later than it does in “Normal” mode. I find myself cruising whole neighbourhoods without ever getting out of electric mode. Pretty stealthy, actually.

Power for the electric motor comes from a compact 240-cell nickel-metal hydride battery that’s tucked away under the cargo area floor.

The only real quibble I have is with the braking. The first time I step on the brake I nearly put myself though the windshield. The slightest pressure brings near-total stopping power.

It IS possible to apply braking lightly, but it takes a lot of practice.

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Summary:

Year/Make/Model
2011 Porsche Cayenne
Price as tested
$99,310
Trim level
S Hybrid
Freight
$1,115
Options
Basic pkg. ($5,700) inc.: Bi-Xenon headlamps, Porsche Dynamic Light System, moonroof, auto-dimming mirrors, navigation; two-tone leather ($4,670); air suspension with self-levelling ($4,550); BOSE Audio Package ($2,480) includes BOSE Surround Sound system, satellite radio and 6-disc changer; 19-inch wheels ($1,780); front and rear park assist ($1,250); Auburn metallic paint ($910); ski bag ($470).
EnerGuide fuel economy ratings
10.4 L/100km city; 8.4 L/100km hwy
Observed fuel economy
9.4 L/100km over 485 km
Warranty (basic)
4 years/80,000 km (comprehensive)
Warranty (powertrain)
4 years/80,000 km (comprehensive)
Competitors
BMW ActiveHybrid X6, Cadillac Escalade Hybrid

Strong Points

Weak Points

  • - looks
  • - drivetrain
  • - performance
  • - comfort
  • - touchy brakes

Editors Rating:

Fuel consumption
great for a big ute
Value for price
It's a costly beast, but…
Styling
looks good, but it's kinda generic
Comfort
terrific seats, good people spaces, nice ride
Performance
wrings a lot of zoom out of a 3.0L engine and electric motor
overall
Now there's a Porsche with superior performance AND economy

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