The Porsche 718 Cayman GT4 is a coupé with 2 doors and a mid mounted engine which transmits its power through the rear wheels.
It forms part of Porsche's 982 series of cars.
The Porsche 718 Cayman GT4's engine is a naturally aspirated petrol, 4 litre, double overhead camshaft 6 cylinder with 4 valves per cylinder. This unit develops 414 bhp (420 PS/309 kW) of power at 7600 rpm, and maximum torque of 420 N·m (310 lb·ft/42.8 kgm) at 5000-6800 rpm. Lubrication is of the dry sump-type.
The engine transmits power to the wheels by means of a 6 speed manual gearbox.
The claimed kerb weight is 1495 kg.
Top claimed speed is 304 km/h or 189 mph, officially stated fuel consumption is 15.6/8.1/10.9 l/100km urban/extra-urban/combined, and carbon dioxide emissions are 249.0 g/km.
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 2 seater fixed-head coupé | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2484 mm | 97.8 inches | |
| Track/tread (front) | 1538 mm | 60.6 inches | |
| Track/tread (rear) | 1534 mm | 60.4 inches | |
| Length | 4456 mm | 175.4 inches | |
| Width | 1801 mm | 70.9 inches | |
| Height | 1269 mm | 50 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.79 | ||
| Kerb weight | 1495 kg | 3296 lb | |
| Weight distribution | |||
| fuel tank capacity | 64 litres | 14.1 [16.9] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | 0.34 | ||
| Frontal area | 2.03 m² | ||
| CdA | 0.69 | ||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Porsche | ||
| Engine code | |||
| Cylinders | Flat 6 | ||
| Capacity | 4 litre 3995 cc (243.79 cu in) |
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| Bore × Stroke | 102 × 81.5 mm
4.02 × 3.21 in |
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| Bore/stroke ratio | 1.25 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 24 valves in total |
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| maximum power output | 420 PS (414 bhp) (309 kW) at 7600 rpm |
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| maximum torque | 420 Nm (310 ft·lb) (42.8 kgm) at 5000-6800 rpm |
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| Specific output | 77.3 kW/litre 105.1 ps/litre 103.6 bhp/litre 1.7 bhp/cu in |
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| Specific torque |
105.13 Nm/litre
1.27 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | dry sumped | ||
| compression ratio | 13:1 | ||
| Fuel system | direct petrol injection | ||
| bmep (brake mean effective pressure) | 1321.1 kPa (191.6 psi) | ||
| Maximum RPM | 8000 rpm | ||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 665.83 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | Y | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | 4.2 s | ||
| Acceleration 0-100km/h | 4.4 s | ||
| Acceleration 0-160km/h (100mph) | 9 s | ||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | 304 km/h (189 mph) | ||
| Power-to-weight ratio | Higher is better 280.77 PS/tonne (1000 kg) 0.28 PS/kg 206.5 kW/tonne (1000 kg) 0.21 kW/kg 276.92 bhp/tonne (1000 kg) 0.28 bhp/kg 0.12 bhp/lb |
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| Weight-to-power ratio | Lower is better 4.84 kg/kW 8.09 lb/bhp |
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| fuel consumption | |||
| Fuel consumption | 15.6/8.1/10.9 l/100km urban/extra-urban/combined | ||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | 15.6/8.1/10.9 l/100km urban/extra-urban/combined | ||
| km/litre | 6.4/12.3/9.2 km/l urban/extra-urban/combined | ||
| UK MPG | 18.1/34.9/25.9 UK MPG urban/extra-urban/combined | ||
| US MPG | 15.1/29.0/21.6 US MPG urban/extra-urban/combined | ||
| Carbon dioxide emissions | 249.0 g/km NEDC | ||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | L | ||
| CO2 Effizienz (DE) | G | ||
| chassis | |||
| Engine position | mid | ||
| Engine layout | longitudinal | ||
| Drive wheels | rear wheel drive | ||
| Torque split | N/A | ||
| Steering | power assisted rack & pinion | ||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 8½J x 20 ET 61 | ||
| Wheel size rear | 11J x 20 ETY50 | ||
| Tyres front | 245/35 ZR 20 95Y XL | ||
| Tyres rear | 295/30 ZR 20 101Y XL | ||
| Brakes F/R | VeDi/VeDi-S-ABS | ||
| Front brake diameter | 380 mm | ||
| Rear brake diameter | 380 mm | ||
| Braked area | |||
| Gearbox | 6 speed manual | ||
| Top gear ratio | 0.81 | ||
| Final drive ratio | 3.89 | ||
| general | |||
| Carfolio.com ID | 598631 | ||
| Production total | |||
| Model code | |||
| Model family | 982 | ||
| RAC rating | 38.7 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2019 Porsche 718 Cayman GT4 added 2019-07-20. Last modified 2020-06-27. |
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