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Porsche 911 Turbo Cabriolet (991.2) (2018) – Specifications & Performance

2018 Porsche 911 Turbo Cabriolet (991.2) Technical Specifications

Engine
Engine layout Rear Engine
Engine type Boxer, twin-turbo
Cylinders 6
Valves per cylinder 4
Construction Aluminum crankcase and heads
Fuel injection Direct Fuel Injection (DFI)
Fuel Premium
Displacement (Liters) 3.8 L
Bore/Stroke (mm/mm) 102 mm / 77.5 mm
Maximum power output @ engine speed 540 hp @ 6400 rpm
Maximum torque with Overboost @ engine speed 524 lb.-ft. @ 2250-4000 rpm
Maximum torque @ engine speed 486 lb.-ft. @ 1950-5000 rpm
Maximum engine speed 7000
Compression ratio 9.8:1
Output per liter 142.1 hp
Lubrication Integrated dry-sump
Electrical System 12 V, 2100 W alternator; battery capacity 95 Ah
Power to weight ratio (lb/hp) 6.8
Drivetrain Active all wheel drive
Chassis & Suspension
Body Monocoque lightweight body in a combination of steel, aluminum and magnesium
Front Axle MacPherson strut with anti-roll bar
Rear Axle Aluminum multi-link with anti-roll bar
Steering System Variable ratio electromec. power steering
Steering Ratio 15.0:1 (on-center) to 12.5:1
Turning Circle 34.8 ft
Transmission 7
Number of gears Transmission type 7-speed PDK
Ratios
1st 3.91
2nd 2.29
3rd 1.58
4th 1.18
5th 0.94
6th 0.79
7th 0.62
Reverse 3.55
Front Axle Ratio 3.4
Rear Axle Ratio 3.3
Final Drive Ratio TBD
Clutch/Converter diameter (inches) 8.7 / 6.4 inches
Dimensions, Aerodynamics, & Weight
Length (inches/mm) 177.4 in. / 4507 mm
Wheelbase (inches/mm) 96.5 in. / 2450 mm
Width w/ mirrors (inches/mm) 77.9 in. / 1978 mm
Width w/o mirrors (inches/mm) 74.0 in. / 1880 mm
Height 50.9 in. / 1294 mm
Track width front (inches/mm) 60.7 in. / 1541 mm
Track width rear (inches/mm) 62.6 in. / 1590 mm
Drag coefficient (Cd) 0.32
Cargo area volume (cu.-ft.) front trunk 115 l / 4.06 cu.-ft.
Cargo area volume (cu.-ft.) rear seats 260 l / 9.18 cu.-ft.
Fuel tank capacity refill volume (gal) 17.9 gal.
Curb weight (lbs) 3671 lbs.
Gross Vehicle Weight (lbs) 4553 lbs.
Payload range (lbs) depend on options 882 lbs.
Performance
Top track speed (mph) 198 mph
Acceleration 0-60 (sec) 3.0 sec.
Quarter mile time 11.2 sec.
Fuel Economy/Rating
City 19 mpg
Highway 24 mpg
Combined 21 mpg