The Porsche 911 Cabriolet (991) Carrera 4 3.4, produced from 2012 to 2015, represents a significant evolution in the iconic 911 lineage. Positioned as a mid-range offering within the 991 generation, it blended the open-air experience of a cabriolet with Porsche’s renowned all-wheel-drive system and a naturally aspirated flat-six engine. This variant aimed to deliver a balanced combination of performance, luxury, and everyday usability, appealing to drivers seeking a sophisticated sports car experience. It was built on the 991 platform, a generation known for its increased refinement and technological advancements over its predecessor.
Technical Specifications
| Brand | Porsche |
| Model | 911 |
| Generation | 911 Cabriolet (991) |
| Type (Engine) | Carrera 4 3.4 (350 Hp) PDK |
| Start of production | 2012 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (economy) – urban | 11.8 l/100 km (19.9 US mpg, 23.9 UK mpg, 8.5 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 | 8.7 l/100 km (27 US mpg, 32.5 UK mpg, 11.5 km/l) |
| CO2 emissions | 202 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 | 280 km/h (173.98 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 4.4 kg/Hp, 227.3 Hp/tonne |
| Weight-to-torque ratio | 3.9 kg/Nm, 253.2 Nm/tonne |
| Power | 350 Hp @ 7400 rpm |
| Power per litre | 101.9 Hp/l |
| Torque | 390 Nm @ 5600 rpm (287.65 lb.-ft. @ 5600 rpm) |
| Engine layout | Rear, Longitudinal |
| Engine Model/Code | MA1.04 |
| Engine displacement | 3436 cm3 (209.68 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Boxer |
| Cylinder Bore | 97 mm (3.82 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 | 29 l (30.64 US qt | 25.52 UK qt) |
| Kerb Weight | 1540 kg (3395.12 lbs.) |
| Max. weight | 1920 kg (4232.88 lbs.) |
| Max load | 380 kg (837.76 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 | 1300 mm (51.18 in.) |
| Wheelbase | 2450 mm (96.46 in.) |
| Front track | 1532 mm (60.31 in.) |
| Rear (Back) track | 1560 mm (61.42 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 and type of gearbox | 7 gears, automatic transmission PDK |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs, 330 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 | 235/40 ZR19; 295/35 ZR19 |
| Wheel rims size | 8.5J x 19; 11J x 19 |
Powertrain & Engine Architecture
At the heart of the 991 Carrera 4 3.4 lies the MA1.04 engine, a 3.4-liter naturally aspirated flat-six. This engine is a direct injection powerplant, a key technology for improving both power and fuel efficiency. The direct injection system precisely meters fuel into the combustion chamber, optimizing the air-fuel mixture and reducing knocking. The engine utilizes a four-valve-per-cylinder configuration and a relatively high 12.5:1 compression ratio, contributing to its responsive nature. The engine produces 350 horsepower at 7400 rpm and 390 Nm (287.65 lb-ft) of torque at 5600 rpm. Paired with this engine is Porsche’s seven-speed PDK (Porsche Doppelkupplung) dual-clutch transmission. The PDK offers both fully automatic operation and manual gear selection via steering wheel-mounted paddles, providing a versatile driving experience. The all-wheel-drive system utilizes a multi-plate clutch to distribute power between the front and rear axles, enhancing traction and stability, particularly in adverse weather conditions.
Driving Characteristics
The 911 Carrera 4 3.4 PDK delivers a refined and engaging driving experience. While not as brutally quick as the higher-output Carrera S models, it provides ample power for spirited driving. The PDK transmission shifts quickly and smoothly, contributing to brisk acceleration. The all-wheel-drive system provides excellent grip, inspiring confidence in corners. Compared to the six-speed manual transmission available on other 911 variants, the PDK offers quicker acceleration and improved fuel economy. The gear ratios are tuned for a balance of performance and efficiency, with shorter ratios in the lower gears for strong off-the-line acceleration and longer ratios in the higher gears for comfortable cruising. The power delivery is linear and predictable, making the car accessible to drivers of all skill levels.
Equipment & Trim Levels
The Carrera 4 3.4 typically came standard with features such as leather upholstery, automatic climate control, a touchscreen infotainment system, and bi-xenon headlights. Optional extras included features like adaptive sport seats, a Bose audio system, and Porsche Dynamic Chassis Control (PDCC), which actively manages body roll. Interior trim options allowed for personalization, with a range of leather colors and materials available. The standard dashboard layout featured a five-gauge instrument cluster, a hallmark of the 911 design. The convertible top was fully automatic and could be raised or lowered in a matter of seconds.
Chassis & Braking
The 991 generation 911 featured a redesigned chassis that was both lighter and stiffer than its predecessor. The Carrera 4 3.4 utilized an independent suspension system with 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. ABS (Anti-lock Braking System) was standard, enhancing safety and control. The steering system was a rack-and-pinion design with electric power assistance, offering precise and responsive steering feel.
Market Reception & Comparison
The 911 Carrera 4 3.4 PDK was generally well-received by automotive critics. It was praised for its balanced performance, refined handling, and comfortable ride. Compared to the rear-wheel-drive Carrera models, the Carrera 4 offered improved traction and stability, making it a more practical choice for drivers in colder climates or those who frequently drive on wet roads. Compared to the more powerful Carrera S models, the Carrera 4 offered a more accessible price point and slightly better fuel economy. However, some critics noted that the engine lacked the outright excitement of the Carrera S’s larger displacement engine.
Legacy
The MA1.04 engine, while not known for any major inherent flaws, requires regular maintenance to ensure longevity. The PDK transmission is generally reliable, but fluid changes are essential to prevent premature wear. Today, the 991 Carrera 4 3.4 represents a compelling value in the used sports car market. It offers a blend of performance, luxury, and reliability that is difficult to match. Its timeless design and engaging driving experience continue to appeal to Porsche enthusiasts. Well-maintained examples are likely to hold their value as the 991 generation becomes increasingly sought after by collectors.
