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In the case of the 911 Carrera 4S Cabriolet that begins with a larger, more potent six-cylinder engine. The Carrera 4S is powered by a 3.8-liter flat six that produces 355 horsepower and 295 lb.-ft. of torque. The roughly ten percent increase in power translates to improved acceleration and higher top track speed. The 911 Carrera 4S Cabriolet with the six-speed manual gearbox races from a stop to 60 mph in only 4.7 seconds, topping out at the track at 185 mph. When carrying the optional Tiptronic S transmission, the zero to 60 mph sprint takes a mere 4.5 seconds.
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.
The new downsized flat-six gets forced induction, more power and greater efficiency, just like in the basic refreshed 911 Carrera, this time mated to a four-wheel-drive system nicked wholesale from the Turbo. Apparently one in three 911 buyers opt for a four-wheel-drive variant, so this is an important car to get right. The 3.0-liter twin-turbo flat-six in the 911 Carrera 4S is good for  414hp and 368 ft lbs of torque, helping it get from 0 to 62 mph in 4.2 sec with a manual, 4.0 seconds with the PDK and 3.6 sec with the PDK and optional Sport Chrono pack.
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. 
Top down summertime driving in the current 911 Carrera 4S Cabriolet is about as good as it gets. It checks all of the right boxes, as while it has matured into almost a GT-type car; it still boasts more performance than ever. Like the rest of Carrera S models, the Carrera 4S Cabriolet is powered by the same 3.0-liter twin-turbo flat-six that makes 443 horsepower and 390 ft lbs of torque. It comes standard with the same eight-speed twin-clutch automatic transmission.
A new turbo flat-six engine is the headline news. Still super fast and surefooted all year round. The revised four-wheel-drive 911 makes the car's appeal on year-round, any-occasion usability even stronger. The 911 Carrera 4S receives a series of subtle styling updates as part of a reasonably comprehensive mid-life facelift. Included is a redesigned front bumper sporting active air ducts that open and close to channel air to the front-mounted radiators dependent on throttle load, revised headlights with altered internal graphics, larger exterior mirror housings and new door handles.
The 2012 Carrera 4S Cabriolet had the same wider rear track when compared to the non-S version of the vehicle. It wasn't something everyone would notice, but the difference was there for a reason, and that reason was the wider tires installed. From behind, a rear red light-strip united the LED taillights. Inside the Carrera 4S Cabriolet, there were some luxury features. The leather-covered sport-bucket seats were covered in leather. Even the rear, unusable, seats were wrapped in leather. The center console was higher to give a sense of a single-seat racing roadster.
The new all-wheel drive 911 is being launched on the market in four versions – as the 911 Carrera 4 and 911 Carrera 4S and each as Coupé and Cabriolet. The Coupé and Cabriolet of the 911 Carrera 4 S each have a 3.8-litre rear-mounted boxer engine that produces 400 hp (294 kW); this enables acceleration to 100 km/h in 4.1 seconds (Cabriolet: 4.3 seconds) and a top speed of 299 km/h (Cabriolet: 296 km/h) with a suitable equipment configuration. Fuel consumption values with PDK are 9.1 l/100 km (CO2 215 g/km) for the Coupé and 9.2 l/100 km (CO2 217 g/km) for the Cabriolet.
The perfect daily driving sports car with an all-weather, remarkably high-performance envelope. Like the rest of Carrera S models, the Carrera 4S is powered by the same 3.0-liter twin-turbo flat-six that makes 443 horsepower and 390 lb-ft of torque. It also comes standard with the same eight-speed twin-clutch automatic transmission with the same gear ratios, except the 4S with an added clutch and differential up front.
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.