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Model:
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S4 Sedan
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S4 Avant
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Engine/Engine Design
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Type:
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Six-cylinder four-stoke, spark ignition, two light alloy cylinder heads, threee inlets and two (sodium-cooled) exhaust valves, DOHC, twin turbochargers
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Bore:
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3.19 in. (81 mm)
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Stroke:
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3.40 in. (86.4 mm)
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Displacement:
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163 cu. in. (2671 cc)
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Compression Ratio:
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9.3:1
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Horsepower (SAE Net):
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250 @ 5800 RPM
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Torque:
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258 ft. lbs.@ 1850 RPM
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Cylinder block:
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Cast Iron
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Crankshaft:
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Forged Steel, 4 main bearings
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Cylinder head:
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Aluminum alloy
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Valve Train:
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DOHC, belt driven, hydraulic lifters / variable intake valve timing and variable geometry composite intake manifold
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Firing Order:
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1-4-3-6-2-5
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Cooling System:
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Water-cooled, thermostatically controlled radiator fan
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Fuel/Ignition System:
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Electronic sequential fuel injection, mapped-characterisitc ignition with solid state direct ignition, variable intake camshaft control, cylinder-selective knock control, exhaust temperature control, coordinated engine-torque control, ME 7.0 Motronic with electronic throttle
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Emission System:
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Two tubular exhaust manifolds with air-gap insulation, pre catalytic converters close to enine, two main catalytic converters underfloor, oxygen sensing for each cylinder bank with four heated oxygen sensors
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Drivetrain
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Type:
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quattro all-wheel drive
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Transmission:
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6-speed manual with synchronized reverse gear or five-speed automatic with DSP and hill detection capability
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Gear Ratios:
1st
2nd
3rd
4th
5th
6th
Reverse
Final Drive
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Manual (Automatic)
3.500:1 (3.665:1)
1.889:1 (1.999:1)
1.231:1 (1.407:1)
0.967:1 (1.000:1)
0.806:1 (0.742:1)
0.684:1 (----)
3.455:1 (4.096:1)
4.111:1 (3.511:1)
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Steering
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Type:
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Maintenance-free rack and pinion with power assistance
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Ratio:
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16.2:1
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Turns (lock-to-lock):
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3.1
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Turning circle (curb-to-curb):
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37.4 ft. (11.4 m)
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Suspension
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Front:
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Independent four-link with virtual steering axis and tubular anti-roll car; twin-tube gas-filled shock absorbers, coil springs, spring rebound stops, guide arms with hydraulically damped pivot bearings
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Rear :
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Double wishbone, with anti-roll bar
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Brakes
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Service brake:
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Diagonally split dual circuits, ABS/EBV; brake booster servo. At front, ventilated discs and high performance twin-piston HP2 calipers, at rear, disc brakes
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Front, size and type:
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12.6 in (321 mm) - ventilated disc
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Rear, size and type:
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10.1 in. (256 mm) - ventilated disc
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Wheels & Tires
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Wheel size:
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7.5j x 17 Avus cast alloy wheel
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Tire size:
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225/45 17 performance tire
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Body
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Material:
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Fully galvanized (both sides) steel
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Corrosion protection:
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Multi-step anti-corrosion process
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Capacities
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Engine Oil:
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6.3 U.S. quarts (6 liter)
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Fuel Tank:
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16.4 U.S. gallons
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Cooling System:
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6.3 U.S. quarts
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Exterior Dimensions
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Wheelbase:
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106.6 in.
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Front Track:
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58.9. (1498 mm)
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Rear Track:
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58.7 in.
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Overall lenth:
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176.5 in. (4483 mm)
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Overall Width:
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72.8 in. (1848 mm)
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Height (unloaded):
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55.8 in. (1418 mm)
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Ground Clearance:
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3.5 in. (90 mm)
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Curb Weight (quattro/manual):
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3593 lbs (1630 kg)
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3704 lbs (1680 kg)
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Weight Distribution
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59/41 (60/40 automatic)
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58/42 (59/41 automatic)
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Interior Dimensions
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Seating Capacity:
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5
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Front Leg room:
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41.3 (1049 mm)
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Rear Leg room:
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33.4 in. (848 mm)
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Interior Volume Front:
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49.9 cu. ft
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Interior Volume Rear:
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38.0 cu. ft
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39.0 cu. ft
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Luggage cpacity:
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13.67 cu. ft
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31.3 cu. ft (63.7 w/ rear seats folded)
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Performance
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0-50 mph (0-80 kmh):
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4.6 sec (4.8 automatic)
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n/a
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0-60 mph (Manual / Auto):
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5.9 sec (6.5 automatic)
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6.0 sec (6.7 automatic)
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1/4 Mile:
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14.4 sec (14.8 sec automatic)
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14.7 sec (15.2sec automatic)
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Top estimated speed:
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143 mph (230 kmh) - Electronically limted for North America
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Fuel Economy
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City (Manual):
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17 mpg
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Highway (Manual):
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24 mpg
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Combined (Manual):
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20 mpg
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