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Porsche Boxster (986) FAQ

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Type Six cylinder, horizontally opposed, water-cooled
Bore 3.4 in. (85.5 mm)
Stroke 2.8 in. (72.0 mm)
Displacement 151 cu. in. (2.5 liter)
Compression ratio 11.0:1
Horsepower (SAE Net) 201 hp (150 kW) @ 6000 rpm
Maximum torque (ft. lb.) 181 ft. lbs. (245 Nm) @ 4500 rpm
Maximum RPM 6700
Engine Design
Crankcase Aluminum alloy
Crankshaft Forged steel, 7 main bearings
Pistons Cast aluminum alloy
Cylinder head Aluminum alloy, crossflow, hemispherical combustion chambers, one spark plug per cylinder
Valve train Double overhead camshaft, 4 valves per cylinder, chain driven, hydraulic lifters with VarioCamTM variable valve timing system
Cooling system Water cooled, dual electric fans on dual radiators
Lubrication system Integrated dry sump, engine oil cooler
Fuel injection Digital Motor Electronics (DME) fuel injection and ignition systems with hot film air flow sensors, both electronically controlled by one DME control unit
Emission system 3-way dual catalytic converters with oxygen sensors, stainless steel core
Electrical System
Battery 12 volt, 70 amp./hr.
Alternator 1680 watt, 120 amp.
Ignition system Digital Motor Electronics (DME) ignition and fuel injection systems with one spark plug per cylinder and dual knock sensors.
Drive Train   Mid-engine, rear-wheel drive, five-speed transaxle or five-speed Tiptronic S dual-function transmission
Gear Ratios (manual)
1st 3.50:1
2nd 2.12:1
3rd 1.43:1
4th 1.03:1
5th 0.79:1
Reverse 3.44:1
Final Drive 3.89:1
Gear Ratios (Tiptronic S)
1st 3.66:1
2nd 2.00:1
3rd 1.41:1
4th 1.00:1
5th 0.74:1
Reverse 4.10:1
Final Drive 4.21:1
Body   Unitized, fully-galvanized steel
Corrosion protection Entire body of hot-dipped and electro-galvanized steel, all panels coated both sides, total immersion pre-treatment, cataphoretic primer coating, hot-wax cavity-filler, PVC undercoating
Front Independent MacPherson-type struts with aluminum alloy lower control arms, coil springs, stabilizer bar, negative steering roll radius
Rear Independent MacPherson-type struts with aluminum alloy lower control arms, coil springs, stabilizer bar, self-stabilizing toe characteristics
Brakes   Power-assisted, dual circuit, four-piston aluminum alloy monoblock fixed caliper, anti-lock braking system (ABS 5.3)
Front Vented discs, 11.74 in. (298 mm)
Rear Vented discs, 11.50 in. (292 mm)
Wheels (standard)
Front Pressure cast alloy 6J x 16
Rear Pressure cast alloy 7J x 16
Front 7J x 17
Rear 8.5J x 17
Tires (standard)
Front 205/55 ZR-16
Rear 225/50 ZR-16
Tires (optional)
Front 205/50 ZR-17
Rear 255/40 ZR-17
Steering   Rack and pinion, hydraulically-assisted
Ratio 16.9:1
Turns (lock-to-lock) 2.98
Turning circle 35.8 ft. (10.9 meters)
Engine oil 8.72 qts. (8.25 L) [with filter]
Fuel tank 15.3 gal. (58.0 L)
Wheelbase 95.2 in.(2415 mm)
Track Front (standard) 57.7 in. (1465 mm)
Track Rear (standard) 60.2 in. (1528 mm)
Track Front (optional) 57.3 in. (1455 mm)
Track Rear (optional) 59.4 in. (1508 mm)
Overall length 171.0 in. (4340 mm)
Overall width 70.1 in. (1780 mm)
Height (unladen) 50.8 in. (1290 mm)
Ground clearance (laden) 4.1 in. (105 mm)
Curb weight (manual) 2822 lbs. (1280 kg)
Curb weight (Tiptronic S) 2954 lbs. (1340 kg)
Performance (manual)
0-60 mph* 6.7 sec.
0-100 kph* 6.9 sec.
Top track speed* 149 mph (240 kph)
Coefficient of drag .31
Performance (Tiptronic S)
0-60 mph* 7.4 sec.
0-100 kph* 7.6 sec.
Top track speed* 146 mph (235 kph)
Coefficient of drag .31
Fuel Economy (manual)
City** 19 mpg (12.3 L/100 km)
Highway** 26 mpg (8.2 L/100 km)
Fuel Economy (Tiptronic S)
City** 17 mpg (14.0 L/100 km)
Highway** 24 mpg (8.9 L/100 km)

*Performance data included for comparison purposes only. Porsche recommends obeying all traffic laws.

**1998 fuel consumption estimates. Compare these estimates to other cars. Fuel use will vary with speed, weather and trip length.