The Porsche Cayenne III Coupe Turbo GT, produced from September 2021 to April 2023, represents the pinnacle of performance within the third-generation Cayenne Coupe lineup. Positioned as the flagship model, it delivers uncompromising power and handling, aimed at enthusiasts seeking a high-performance luxury SUV. This variant distinguishes itself through its potent 4.0-liter twin-turbocharged V8 engine, coupled with Porsche’s eight-speed Tiptronic S automatic transmission, and a suite of performance-enhancing features. It sits above the standard Turbo models and the Cayenne E-Hybrid variants, offering a more focused driving experience.
Technical Specifications
| Brand | Porsche |
| Model | Cayenne |
| Generation | Cayenne III Coupe |
| Type (Engine) | Turbo GT 4.0 V8 (640 Hp) Tiptronic S |
| Start of production | September, 2021 |
| End of production | April, 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe, SUV |
| Seats | 4 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 14.1 l/100 km |
| Combined fuel consumption (US mpg) | 16.7 US mpg |
| Combined fuel consumption (UK mpg) | 20 UK mpg |
| Combined fuel consumption (km/l) | 7.1 km/l |
| CO2 emissions (WLTP) | 319 g/km |
| Fuel consumption (urban) | 16.6 l/100 km |
| Fuel consumption (extra urban) | 9.1 l/100 km |
| Fuel consumption (combined) | 11.9 l/100 km |
| CO2 emissions (NEDC) | 271 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 3.3 sec |
| Acceleration 0 – 62 mph | 3.3 sec |
| Acceleration 0 – 60 mph | 3.1 sec |
| Acceleration 0 – 200 km/h | 12.2 sec |
| Maximum speed | 300 km/h (186.41 mph) |
| Emission standard | Euro 6d-ISC-FCM |
| Weight-to-power ratio | 3.5 kg/Hp |
| Weight-to-torque ratio | 2.6 kg/Nm |
| Power | 640 Hp @ 6000 rpm |
| Power per litre | 160.2 Hp/l |
| Torque | 850 Nm @ 6800 rpm (626.93 lb.-ft. @ 6800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | DWN |
| Engine displacement | 3996 cm3 (243.85 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 86 mm (3.39 in.) |
| Piston Stroke | 86 mm (3.39 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Kerb Weight | 2220 kg (4894.26 lbs.) |
| Max. weight | 2765 kg (6095.78 lbs.) |
| Max load | 545 kg (1201.52 lbs.) |
| Trunk (boot) space – minimum | 482 l (17.02 cu. ft.) |
| Trunk (boot) space – maximum | 1464 l (51.7 cu. ft.) |
| Fuel tank capacity | 90 l (23.78 US gal | 19.8 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Length | 4942 mm (194.57 in.) |
| Width | 1995 mm (78.54 in.) |
| Width including mirrors | 2194 mm (86.38 in.) |
| Height | 1636 mm (64.41 in.) |
| Wheelbase | 2895 mm (113.98 in.) |
| Ride height (ground clearance) | 164-224 mm (6.46 – 8.82 in.) |
| Drag coefficient (Cd) | 0.36 |
| Minimum turning circle | 11.6 m (38.06 ft.) |
| Ramp-over angle | 20.6° |
| Drivetrain Architecture | All wheel drive (4×4) |
| Number of gears | 8 |
| Gearbox type | Automatic transmission Tiptronic S |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs, 440 mm |
| Rear brakes | Ventilated discs, 410 mm |
| Front tires | 285/35 ZR22 106Y |
| Rear tires | 315/30 ZR22 107Y |
Powertrain & Engine Architecture
At the heart of the Cayenne Turbo GT lies Porsche’s DWN engine – a 4.0-liter twin-turbocharged V8. This engine utilizes direct fuel injection and a sophisticated intercooler system to maximize power and efficiency. The twin-turbochargers, strategically positioned within the V-angle, minimize turbo lag and provide a broad torque curve. The engine produces 640 horsepower at 6000 rpm and a substantial 850 Nm (626.93 lb-ft) of torque at 6800 rpm. This power is channeled through Porsche’s eight-speed Tiptronic S automatic transmission, which features quicker shift times and a more responsive feel compared to the standard Tiptronic unit. The transmission is specifically tuned for performance, with closer gear ratios to keep the engine within its optimal power band. The engine also incorporates a gasoline particulate filter (GPF) to meet stringent emissions standards.
Driving Characteristics
The Cayenne Turbo GT delivers exhilarating performance. Its 0-60 mph acceleration time of 3.1 seconds (calculated) and a top speed of 300 km/h (186.41 mph) place it firmly in the realm of high-performance sports cars. The Tiptronic S transmission provides smooth and precise gear changes, whether in automatic or manual mode. The suspension, tuned for performance, offers exceptional handling and stability, minimizing body roll during cornering. Compared to the standard Cayenne Turbo, the Turbo GT benefits from a lower ride height, stiffer springs, and recalibrated dampers. While the standard Turbo offers a more comfortable ride, the Turbo GT prioritizes track performance and driver engagement. The 1.8L and V6 models in the Cayenne lineup offer significantly less power and a more fuel-efficient driving experience, targeting a different segment of buyers.
Equipment & Trim Levels
The Cayenne Turbo GT comes standard with a comprehensive array of luxury and performance features. Interior appointments include sport seats with enhanced bolstering, Alcantara upholstery, and carbon fiber trim. Standard equipment also includes Porsche’s Communication Management (PCM) infotainment system with a large touchscreen display, a premium sound system, and a suite of advanced driver-assistance systems. Optional extras include a panoramic sunroof, adaptive cruise control, and a rear-axle steering system for enhanced maneuverability. The exterior features a distinctive aerodynamic body kit, including a rear spoiler and diffuser, designed to improve downforce and stability at high speeds.
Chassis & Braking
The Cayenne Turbo GT utilizes an independent multi-link suspension system at both the front and rear axles. This suspension is specifically tuned for performance, with stiffer springs and dampers to reduce body roll and improve handling. The braking system features large, ventilated discs at all four corners – 440mm at the front and 410mm at the rear – providing exceptional stopping power. Porsche’s Surface Coated Brake (PSCB) system, with tungsten carbide coating, is available as an option for even greater durability and fade resistance. The vehicle is equipped with Porsche Active Suspension Management (PASM), which electronically adjusts the damping characteristics based on road conditions and driving style.
Market Reception & Comparison
The Cayenne Turbo GT was generally well-received by automotive critics, who praised its exceptional performance, handling, and luxurious interior. However, its firm ride and high price tag were noted as potential drawbacks. Compared to other high-performance SUVs, such as the Lamborghini Urus and the BMW X5 M, the Cayenne Turbo GT offers a unique blend of Porsche’s engineering expertise and luxury appointments. While the Urus prioritizes outright aggression and the X5 M offers a more balanced approach, the Cayenne Turbo GT focuses on delivering a refined yet exhilarating driving experience. Fuel economy, as expected for a vehicle of this performance caliber, is relatively low, with a combined fuel consumption of 14.1 l/100 km (16.7 US mpg).
Legacy
The Cayenne Turbo GT represents a significant achievement in Porsche’s SUV development. Its potent powertrain, advanced chassis technology, and luxurious interior have established it as a benchmark in the high-performance SUV segment. While long-term reliability data is still emerging, Porsche’s reputation for engineering excellence suggests that the DWN engine and Tiptronic S transmission should prove durable with proper maintenance. On the used car market, the Cayenne Turbo GT commands a premium price, reflecting its exclusivity and performance capabilities. It is likely to become a sought-after model among Porsche enthusiasts and collectors.
