Differences What are the advantages of each

Front view of BMW M3

Reasons to consider the
BMW M3 (E92) Coupe

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Faster to 60mph 4.4 s vs 4.8 s Around 10% faster to 60mph
Faster top speed 161 mph vs 155 mph 6 more mph; leaves lesser cars in the dust on the straights
Side view of Audi RS 4

Reasons to consider the
Audi RS 4

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Slightly more expensive sticker price $66k vs $60k 10% more expensive harder to own
Slightly more torque 318 ft-lb @ 5,500 RPM vs 295 ft-lb @ 3,900 RPM Around 10% stronger engine from a stand-still; more acceleration power
Slightly bigger engine 4,200 cc vs 3,999 cc More than 5% bigger engine

Specifications Full list of technical specs

general

BMW M3  vs
Audi RS 4 
Brand BMW Audi
Price 59,625 66,000
Type of car Production car Production car
Year 2008 2005
Highway mileage 20 MPG 21 MPG

power & handling

Power-to-weight ratio 8.69 lb/hp 9.14 lb/hp
Maximum hp 420 HP @ 8,300 RPM 414 HP @ 7,800 RPM
Maximum torque 295 ft-lb @ 3,900 RPM 318 ft-lb @ 5,500 RPM
Max RPM 8,400 RPM 8,250 RPM
Steering system Rack and pinion Rack and pinion

engine

Displacement 3,999 cc 4,200 cc
Cylinders V8 V8
Air compressor None None
Fuels
Gas
Compression ratio 12:1 12.5:1
Bore/stroke 3.62 in / 2.96 in 3.47 in / 3.66 in
Valvetrain DOHC DOHC
Valves per cylinder 4 4

road tests

BMW M3  vs
Audi RS 4 
Top speed 161 mph 155 mph
1/4 mile 12.5 s 12.8 s
0-60mph 4.4 s 4.8 s
0-100mph 10 s 10 s

transmission

Drivetrain RWD w/M Differential Lock Quattro 4WD w/Torsen Centre Differential, DRC Dynamic Ride Control
Gearing Traditional Traditional
# of gears 6 6
Gear ratios
1: 4.06:1
2: 2.37:1
3: 1.58:1
4: 1.19:1
5: 1:1
6: 0.87:1
Axle ratio 3.85:1 3.89:1

suspension, wheels & brakes

Front brakes Disc Disc
Rear brakes Disc Disc
Front wheels 457/? 215 457/? 203
Rear wheels 457/? 241 483/? 229

physical dimensions

Curb weight 3,649 lb 3,784 lb
Width 71.5 in 69.8 in
Height 55.8 in 55 in
Length 181.7 in 180.6 in
Front track width 60.6 in 61.4 in
Wheelbase 108.7 in 104.3 in
BMW M3 (E92) Coupe
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Audi RS 4
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