Do you mean just the S4?
I'm not sure what an RS4 is.. but heres the specs on the audi S4
Specifications
Model Configuration
250 hp 2.7 liter V6 with 6-speed manual transmission and quattro® all-wheel drive
250 hp 2.7 liter V6 with 5-speed Tiptronic® transmission and quattro® all-wheel drive
Engine
DOHC biturbo 90° V6 with 5 valves per cylinder, variable valve timing and variable composite intake manifold
Displacement: 2.7 liters (163 cu.in.)
Bore: 3.19 in.
Stroke: 3.40 in.
Compression ratio: 9.3:1
Horsepower (SAE net): 250 @ 5800 rpm
Torque: 258 lb/ft @ 1850-3600 rpm
Performance
0-60 seconds
manual: 5.9
Tiptronic®: 6.5
Top track speed: 143 mph¹
EPA fuel economy estimates² (city/highway): 17/24
Chassis/Technical
2-sided fully galvanized steel, multi-step anti-corrosion protection
Front suspension: Four-link, upper and lower control arms, stabilizer bar, coil spring/shock absorbers (gas-charged)
Rear suspension: Double control arms (upper and lower), stabilizer bar, coil spring/shock absorbers (gas-charged)
Brakes: Dual diagonal with anti-lock braking, diagonally split dual circuits, brake booster servo and electronic rear brake pressure proportioning, HP2 twin-piston four-pad front calipers
Electronic Stabilization Program (ESP®)
Steering: Variable power-assist rack and pinion; turning circle: 37.4 ft.
Curb weight (lbs.)
manual: 3593
Tiptronic®: 3704
Capacities
Engine oil (U.S. quarts): 6.3
Fuel tank (U.S. gallons): 16.4
Cooling system: (U.S. quarts): 6.3
[copy pasted straight from www.audi.com]
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