The Porsche 911 Cabriolet (991) Carrera 4S 3.8, produced from 2012 to 2015, represents a significant evolution in the iconic 911 lineage. Falling within the sixth generation (991) of the 911, this variant combined the open-air thrill of a cabriolet with the enhanced all-weather capability of Porsche’s Carrera 4 all-wheel-drive system, and a potent 3.8-liter flat-six engine. Positioned as a mid-to-high range offering within the 991 Cabriolet lineup, the Carrera 4S bridged the gap between the base Carrera models and the more focused, track-oriented Carrera S variants. It aimed to deliver a blend of performance, luxury, and everyday usability.
Technical Specifications
| Brand | Porsche |
| Model | 911 |
| Generation | 911 Cabriolet (991) |
| Type (Engine) | Carrera 4S 3.8 (400 Hp) |
| Start of production | 2012 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (economy) – urban | 13.9 l/100 km (16.9 US mpg, 20.3 UK mpg, 7.2 km/l) |
| Fuel consumption (economy) – extra urban | 7.7 l/100 km (30.5 US mpg, 36.7 UK mpg, 13 km/l) |
| Fuel consumption (economy) – combined | 10 l/100 km (23.5 US mpg, 28.2 UK mpg, 10 km/l) |
| CO2 emissions | 235 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.7 sec |
| Acceleration 0 – 62 mph | 4.7 sec |
| Acceleration 0 – 60 mph | 4.5 sec |
| Maximum speed | 296 km/h (183.93 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 3.8 kg/Hp, 260.6 Hp/tonne |
| Weight-to-torque ratio | 3.5 kg/Nm, 286.6 Nm/tonne |
| Power | 400 Hp @ 7400 rpm |
| Power per litre | 105.3 Hp/l |
| Torque | 440 Nm @ 5600 rpm (324.53 lb.-ft. @ 5600 rpm) |
| Engine layout | Rear, Longitudinal |
| Engine Model/Code | MA1.03 |
| Engine displacement | 3800 cm3 (231.89 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Boxer |
| Cylinder Bore | 102 mm (4.02 in.) |
| Piston Stroke | 77.5 mm (3.05 in.) |
| Compression ratio | 12.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine oil capacity | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Coolant | 29 l (30.64 US qt | 25.52 UK qt) |
| Kerb Weight | 1535 kg (3384.1 lbs.) |
| Max. weight | 1935 kg (4265.94 lbs.) |
| Max load | 400 kg (881.85 lbs.) |
| Trunk (boot) space – minimum | 285 l (10.06 cu. ft.) |
| Fuel tank capacity | 68 l (17.96 US gal | 14.96 UK gal) |
| Length | 4491 mm (176.81 in.) |
| Width | 1852 mm (72.91 in.) |
| Height | 1294 mm (50.94 in.) |
| Wheelbase | 2450 mm (96.46 in.) |
| Front track | 1538 mm (60.55 in.) |
| Rear (Back) track | 1552 mm (61.1 in.) |
| Drag coefficient (Cd) | 0.31 |
| Minimum turning circle | 10.9 m (35.76 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 7 |
| Gearbox type | Manual transmission |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs, 340 mm |
| Rear brakes | Ventilated discs, 330 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 245/35 ZR20; 305/30 ZR20 |
| Wheel rims size | 8.5J x 20; 11J x 20 |
Powertrain & Engine Architecture
At the heart of the 991 Carrera 4S lay the MA1.03 engine, a naturally aspirated 3.8-liter flat-six. This engine was a direct evolution of the previous generation’s powerplant, but with significant advancements in direct fuel injection, variable valve timing (VVT), and integrated dry-sump lubrication. The direct injection system, operating at pressures up to 200 bar, allowed for precise fuel metering and improved combustion efficiency. The flat-six configuration, with its horizontally opposed cylinders, contributed to a low center of gravity, enhancing handling characteristics. The engine produced 400 horsepower at 7,400 rpm and 324.5 lb-ft of torque at 5,600 rpm. The standard transmission was a seven-speed manual, though Porsche’s PDK (Porsche Doppelkupplung) seven-speed dual-clutch transmission was a popular option, offering faster shifts and improved fuel economy. The all-wheel-drive system utilized a multi-plate clutch to distribute power between the rear and front axles, providing enhanced traction and stability, particularly in adverse weather conditions.
Driving Characteristics
The Carrera 4S 3.8 offered a compelling driving experience. The 3.8-liter engine delivered strong, linear power throughout the rev range, providing ample acceleration for both everyday driving and spirited performance. The all-wheel-drive system instilled confidence, particularly on slippery surfaces, and reduced understeer compared to rear-wheel-drive 911s. The seven-speed manual transmission offered precise shifts, while the PDK transmission provided incredibly quick and seamless gear changes. Compared to the base Carrera, the 4S offered a more planted and secure feel, while lacking the raw, tail-happy dynamics of the rear-wheel-drive Carrera S. The steering was precise and communicative, providing excellent feedback to the driver. The suspension, tuned for a balance of comfort and performance, absorbed bumps effectively while maintaining body control during cornering.
Equipment & Trim Levels
The Carrera 4S came standard with a generous array of features, including leather upholstery, bi-xenon headlights, a power-adjustable driver’s seat, automatic climate control, and a high-quality audio system. Optional extras were plentiful, allowing buyers to personalize their vehicles. Popular options included sport seats, a sunroof, Porsche Dynamic Chassis Control (PDCC), and various interior trim packages. The cabriolet top was fully automatic and could be raised or lowered in approximately 13 seconds, even while driving at moderate speeds. The interior design was typically Porsche – functional, elegant, and focused on the driver.
Chassis & Braking
The 991 Carrera 4S utilized a lightweight chassis construction, incorporating aluminum in key areas to reduce weight. The suspension featured independent McPherson struts at the front and a multi-link setup at the rear. The braking system consisted of ventilated discs on all four wheels, providing ample stopping power. The Carrera 4S was equipped with Porsche Stability Management (PSM), an electronic stability control system that helped to maintain control in challenging driving situations. The standard wheel size was 20 inches, with wider rear tires for improved traction.
Market Reception & Comparison
The 991 Carrera 4S was well-received by automotive critics, who praised its performance, handling, and refinement. It was often lauded as a versatile sports car that could be enjoyed both on the road and on the track. Compared to the base Carrera, the 4S offered a noticeable performance upgrade and the added security of all-wheel drive. Compared to the Carrera S, it provided a more balanced and predictable driving experience. Fuel economy was respectable for a high-performance sports car, averaging around 23.5 mpg in combined driving. Reliability was generally good, although some owners reported minor issues with the infotainment system and the hydraulic lifters in the engine.
Legacy
The 991 Carrera 4S 3.8 remains a highly desirable Porsche today. Its combination of performance, luxury, and all-weather capability has made it a popular choice among enthusiasts. The 3.8-liter engine is known for its durability and reliability, and the PDK transmission is widely regarded as one of the best dual-clutch transmissions available. Well-maintained examples command strong prices in the used car market, reflecting the enduring appeal of the Porsche 911.
