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Porsche 911 Coupe (991 Series) 4 GTS
Porsche 911 Coupe (991 Series) 4 GTS (2014)
Mercedes Benz AMG GT Roadster
Mercedes Benz AMG GT Roadster (2017)
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Engine Technical Data
Engine type - Number of cylinders
Boxer 6
V 8
Engine Code
M 178 DE 40 AL
Fuel type
Petrol
Petrol
Fuel System
Direct Injection. Variable Intake
Direct Injection.
Engine Alignment
Transverse
Longitudinal
Engine Position
Rear
Front
Engine displacement
231.9 cu-in / 3800 cm3
243 cu-in / 3982 cm3
Bore
4.02 inches
102.0 mm
3.27 inches
83.0 mm
Stroke
3.05 inches
77.5 mm
3.62 inches
92.0 mm
Number of valves
24
32
Aspiration
N/A
Turbo + Intercooler
Compression Ratio
12.5
10.5
Horsepower
424 HP / 430 PS / 316 kW @ 7500 rpm
470 HP / 476 PS / 350 kW @ 6000 rpm
Maximum torque
324 lb-ft / 440 Nm @ 5750 rpm
464 lb-ft / 630 Nm @ 1700-5000 rpm
Drive wheels - Traction - Drivetrain
AWD
RWD
Transmission Gearbox - Number of speeds
7
7
Clutch Type
Manual
Automatic
Size, Dimensions, Aerodynamics and Weight
Body
Coupe
Cabrio
Num. of Doors
2
2
Num. of Seats
4
2
Seat distribution
2+2
2
Wheelbase
96.46 inches / 245.0 cm
103.54 inches / 263.0 cm
Length
177.52 inches / 450.9 cm
178.98 inches / 454.6 cm
Width
72.91 inches / 185.2 cm
76.34 inches / 193.9 cm
Height
51.02 inches / 129.6 cm
50.75 inches / 128.9 cm
Front Axle
60.31 inches / 153.2 cm
66.38 inches / 168.6 cm
Rear Axle
61.42 inches / 156.0 cm
65 inches / 165.1 cm
Front Brakes - Disc dimensions
Vented Discs (13.39 inches / 340 mm)
Vented Discs (14.17 inches / 360 mm)
Rear Brakes - Disc dimensions
Vented Discs (12.99 inches / 330 mm)
Vented Discs (14.17 inches / 360 mm)
Front Tyres - Rims dimensions
245/35 R20
255/35 R19
Rear Tyres - Rims dimensions
295/30 R20
295/35 R19
Front Wheels Width
8.5
9.0
Rear Wheels Width
11.0
11.0
Curb Weight
3406 lbs / 1545 kg
3682 lbs / 1670 kg
Weight/Power Output Ratio
3.59 Kg/hp
3.51 Kg/hp
Trunk / Boot capacity
4.4 cu-ft / 125 L
Steering
Rack and pinion Electric
Rack and pinion Hydraulic
Steering wheel lock-to-lock
2.6 turns
Front Suspension
McPherson struts. Coil springs.
Coil springs.
Rear Suspension
Coil Springs.
Coil Springs.
Top Speed
189 Mph / 304 km/h
188 Mph / 302 km/h
Acceleration 0 to 100 km/h (0 to 62 mph)
4.4 s
4.0 s
Fuel Consumption (Economy), Emissions and Range
Fuel Consumption - Economy - Combined
25 MPG
9.4 L/100 km
30 MPG UK
Fuel Consumption - Economy - City NEDC
17 MPG
13.8 L/100 km
20 MPG UK
Fuel Consumption - Economy - Open road NEDC
31 MPG
7.7 L/100 km
37 MPG UK
Fuel Consumption - Economy - Combined NEDC
24 MPG
9.9 L/100 km
29 MPG UK
25 MPG
9.4 L/100 km
30 MPG UK
Range
495 miles / 797 km
Fuel Tank Capacity
18 gallons
68 L
15 UK gallons
19.8 gallons
75 L
16.5 UK gallons
CO2 emissions
233 g/Km (Porsche)
219 g/Km (Mercedes Benz)
Emission standard
Euro VI
Euro VI



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