The Porsche 911 Cabriolet (991) Carrera GTS 3.8, equipped with the Porsche Doppelkupplung (PDK) dual-clutch transmission, represented a high-performance variant within the broader 991 generation of the iconic 911. Produced from 2014 to 2015, this model blended the open-air experience of a cabriolet with the enhanced power and handling characteristics of the “GTS” designation. It occupied a position between the standard Carrera models and the more track-focused GT3, appealing to drivers seeking a thrilling yet refined sports car experience. The 991 generation itself was a significant evolution of the 911, introducing a longer wheelbase, a wider track, and a more sophisticated chassis compared to its predecessor, the 997.
Technical Specifications
| Brand | Porsche |
| Model | 911 |
| Generation | 911 Cabriolet (991) |
| Type (Engine) | Carrera GTS 3.8 (430 Hp) PDK |
| Start of production | 2014 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (economy) – urban | 12.3 l/100 km (19.1 US mpg, 23 UK mpg, 8.1 km/l) |
| Fuel consumption (economy) – extra urban | 6.9 l/100 km (34.1 US mpg, 40.9 UK mpg, 14.5 km/l) |
| Fuel consumption (economy) – combined | 8.9 l/100 km (26.4 US mpg, 31.7 UK mpg, 11.2 km/l) |
| CO2 emissions | 207 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.2 sec |
| Acceleration 0 – 62 mph | 4.2 sec |
| Acceleration 0 – 60 mph | 4 sec |
| Maximum speed | 302 km/h (187.65 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 3.5 kg/Hp, 283.8 Hp/tonne |
| Weight-to-torque ratio | 3.4 kg/Nm, 290.4 Nm/tonne |
| Power | 430 Hp @ 7500 rpm |
| Power per litre | 113.2 Hp/l |
| Torque | 440 Nm @ 5750 rpm (324.53 lb.-ft. @ 5750 rpm) |
| Engine layout | Rear, Longitudinal |
| Engine Model/Code | MA1.01 |
| 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 aspiration | Naturally aspirated engine |
| Engine oil capacity | 7.5 l (7.93 US qt | 6.6 UK qt) |
| Coolant | 26.3 l (27.79 US qt | 23.14 UK qt) |
| Kerb Weight | 1515 kg (3340 lbs.) |
| Max. weight | 1925 kg (4243.9 lbs.) |
| Max load | 410 kg (903.9 lbs.) |
| Trunk (boot) space – minimum | 285 l (10.06 cu. ft.) |
| Fuel tank capacity | 64 l (16.91 US gal | 14.08 UK gal) |
| Length | 4509 mm (177.52 in.) |
| Width | 1852 mm (72.91 in.) |
| Height | 1292 mm (50.87 in.) |
| Wheelbase | 2450 mm (96.46 in.) |
| Front track | 1538 mm (60.55 in.) |
| Rear (Back) track | 1560 mm (61.42 in.) |
| Drag coefficient (Cd) | 0.30 |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears and type of gearbox | 7 gears, automatic transmission PDK |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 245/35 ZR20; 305/30 ZR20 |
| Wheel rims size | 9J x 20; 11.5J x 20 |
Powertrain & Engine Architecture
At the heart of the 911 Carrera GTS 3.8 PDK lay a 3.8-liter naturally aspirated flat-six engine, designated the MA1.01. This engine was a direct descendant of Porsche’s long-standing boxer engine design, known for its low center of gravity and smooth operation. The “3.8” designation referred to its displacement, while the “GTS” specification included upgrades such as a revised intake system and engine management software, boosting power output to 430 horsepower at 7,500 rpm and 440 Nm (324.53 lb-ft) of torque at 5,750 rpm. The engine utilized direct fuel injection, optimizing combustion efficiency and responsiveness. The PDK transmission, a seven-speed dual-clutch automated manual, provided incredibly fast and smooth gear changes, contributing to the car’s impressive acceleration. Unlike a traditional automatic, the PDK allowed for both fully automatic operation and manual gear selection via steering wheel-mounted paddles.
Driving Characteristics
The combination of the 430 hp engine and the PDK transmission resulted in exhilarating performance. Acceleration from 0 to 60 mph was achieved in approximately 4 seconds, and the car could reach a top speed of 302 km/h (187.65 mph). The PDK transmission’s quick shifts and optimized gear ratios ensured that power was delivered efficiently, providing strong acceleration in any gear. Compared to the standard Carrera models, the GTS offered a noticeably more engaging driving experience, with sharper throttle response and a more aggressive exhaust note. While the manual transmission offered a more direct connection to the car, the PDK provided a level of convenience and speed that appealed to many drivers, particularly in urban environments. The rear-wheel-drive configuration and the engine’s rearward placement contributed to the 911’s characteristic handling balance, providing excellent traction and agility.
Equipment & Trim Levels
The Carrera GTS Cabriolet came standard with a generous array of features, including a power-retractable soft top, sport seats, a sport exhaust system, and Porsche Active Suspension Management (PASM). PASM electronically adjusts the damping characteristics of the shock absorbers, providing a balance between comfort and performance. Interior appointments included leather upholstery, aluminum trim, and a sport steering wheel. Optional extras included adaptive cruise control, a Bose audio system, and various customization options for interior colors and materials. The GTS trim also included unique exterior styling cues, such as blacked-out wheels and tinted headlights, differentiating it from the standard Carrera models.
Chassis & Braking
The 991 generation 911 featured a sophisticated chassis design, with an independent suspension at all four wheels. The front suspension utilized a McPherson strut design, while the rear employed a multi-link setup. The GTS model benefited from a slightly lowered ride height and stiffer springs compared to the standard Carrera, further enhancing handling. Braking duties were handled by ventilated discs at all four corners, providing ample stopping power. Porsche’s Anti-lock Braking System (ABS) and other electronic stability control systems ensured safe and controlled braking performance. The GTS also featured a larger brake rotor size compared to the base Carrera.
Market Reception & Comparison
The 911 Carrera GTS 3.8 PDK was widely praised by automotive critics for its exceptional performance, refined handling, and luxurious interior. It was often lauded as the sweet spot in the 911 lineup, offering a compelling blend of performance and everyday usability. Compared to the standard Carrera models, the GTS provided a significant step up in performance and driving engagement. While the GT3 offered even more focused track performance, the GTS was considered more versatile and comfortable for daily driving. Fuel economy, while not a primary concern for buyers in this segment, was respectable for a high-performance sports car, with combined fuel consumption of around 26.4 US mpg. Reliability was generally good, consistent with Porsche’s reputation for engineering excellence.
Legacy
The 991 Carrera GTS 3.8 PDK remains a highly sought-after model in the used car market. Its combination of performance, luxury, and open-air driving enjoyment continues to appeal to enthusiasts. The MA1.01 engine is known for its durability and relatively straightforward maintenance, although regular servicing is essential to maintain its performance. The PDK transmission has also proven to be reliable, provided it is properly maintained. As a representative of a pivotal generation in the 911’s history, the 991 Carrera GTS 3.8 PDK is considered a modern classic, offering a timeless driving experience that continues to captivate drivers today.
