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The Cabriolet version of the new Porsche 911 Carrera 4 GTS is just as potent as its coupe sibling. It combines a 408 hp 3.8-litre flat six engine with intelligent all-wheel drive that delivers a further exhilarating dimension to the dynamics of the iconic rear-engined sports car. The 911 was first offered with four-wheel drive in 1989 and the drivetrain has been a popular option ever since. Now, the 911 Carrera 4 GTS broadens customer choice in 2011, building on the success of the two-wheel drive Carrera GTS that went on sale in December last year. Carrera 4 GTS power unit is the 3.8-litre flat six with power kit.
The new Porsche 911 Carrera 4 GTS combines a 408 hp 3.8-litre flat six engine with intelligent all-wheel drive that delivers a further exhilarating dimension to the dynamics of the iconic rear-engined sports car. The 911 was first offered with four-wheel drive in 1989 and the drivetrain has been a popular option ever since. Now, the 911 Carrera 4 GTS broadens customer choice in 2011, building on the success of the two-wheel drive Carrera GTS that went on sale in December last year. The 911 Carrera 4 GTS power unit has its origins in the 3.8-litre, six-cylinder from the Carrera S, with the power kit added.
It's not often Porsche creates an all-new model in their 911 lineup. But the 997 Carrera GTS is just that. It's faster, more powerful and better looking than any other model in the Carrera family. However it's still a little less hardcore than the 911 GT3, and a lot cheaper than the 911 Turbo. The Porsche 911 Carrera GTS features a 3.8 litre flat-six engine which is tuned to develop 408 horsepower, that's 23 hp more than the Carrera S manages. Think of it as the perfectly optioned Carrera S for less money.
For 2009, engine power is distributed to all four wheels via the same electronically controlled Porsche Traction Management system found previously only on the Porsche Turbo. The electronic controls respond to driving conditions even more instantaneously than the previously used hydraulically activated all-wheel drive system. The Carrera 4S model, with a 3.8-litre engine developing 355 bhp, can go from 0 to 60 mph in 4.5 seconds and has a top speed of 185 mph.
Most importantly, the refreshed Carrera 4 and 4S lose the old multi-plate, viscous all-wheel-drive system in favor of the electronically controlled system from the 911 Turbo. The old system could send between 5 and 40 percent of engine torque to the front wheels once it had detected wheelspin. The new electronic system can anticipate traction losses and shift up to 100 percent of engine torque fore or aft. Porsche says the new AWD system reacts faster to traction changes, and doesn’t make the Carrera 4 significantly heavier.
While the 997 Carrera 4S coupe sold a healthy 15,056 units between 2006 and 2008, the equally exciting Carrera 4S Cabriolet sold 12,587 units, making it a pretty popular 997 model. The reason is pretty simple. It had a gorgeous wide-body stance, all-wheel drive traction and that potent 3.8 L Flat 6 that was good for 350 bhp and 295 ft lbs of torque. The first convertible 911 that was as good a performer as it coupe siblings with the added benefit of open top driving in the summer with the comfort of being a great daily driver all year round. 
Along with its sibling Carrera 4, the 2005 Carrera 4S offered an all-wheel-drive system for the Porsche 911, but unlike the 4, the 4S gets the Carrera S' more powerful engine and it turns out that makes a big difference. The Carrera 4S was the more powerful and more dynamic version of the 997 Carrera 4 and an overall great sports car, especially for those in colder climates who need the safety of all-wheel traction. All rounder that fits nicely in the 911 lineup as perhaps the most practical.
The Carrera 4 Cabriolet was released with the rest of the 4 and 4S models as 2006 model year cars. With a sure-footed, four-wheel drive powertrain as well as that "wide-body" stance, and with tops that open or close at the touch of a button, the Carrera 4 Cabriolet really started to make the case it could do it all. The wide look gave the 4 a widened track, larger wheels and tires and four-wheel-drive powertrain that gives more dynamic stability, especially in inclement weather conditions. Developed at the same time as the coupe.