Road Tests Real world tests of Impreza WRX STI vs C63 AMG

Top speed

1/4 mile

Differences What are the advantages of each

Side view of Subaru Impreza WRX STI

Reasons to consider the
Subaru Impreza WRX STI

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Lighter curb weight 3,319 lb vs 3,814 lb Around 15% lighter curb weight; less inertia to overcome when accelerating
Car-autoblog view of Mercedes-Benz C63 AMG

Reasons to consider the
Mercedes-Benz

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Way more expensive sticker price $87k vs $30k Around 3x more expensive harder to own
Faster in the quarter mile 12.1 s vs 13.5 s More than 10% faster at the drag strip
Faster to 60mph 3.7 s vs 5 s More than 25% faster to 60mph
Way more more powerful engine 480 HP @ 6,800 RPM vs 296 HP @ 6,000 RPM More than 60% stronger engine
Much bigger engine 6,208 cc vs 2,457 cc More than 2.5x bigger engine
More torque 442 ft-lb @ 5,000 RPM vs 300 ft-lb @ 4,000 RPM More than 45% stronger engine from a stand-still; more acceleration power
Better power-to-weight ratio 7.95 lb/hp vs 11.21 lb/hp Around 30% better power-to-weight ratio

Specifications Full list of technical specs

general

Impreza WRX STI  vs
C63 AMG 
Brand Subaru Mercedes-Benz
Price 30,000 87,462
Type of car Production car Production car
Year 2011 2012
City mileage 17 MPG 14 MPG
Highway mileage 23 MPG 20 MPG

transmission

Drivetrain 4WD RWD
Gearing Traditional Traditional
# of gears 6 7

engine

Displacement 2,457 cc 6,208 cc
Cylinders Flat 4 V8
Fuels
Gas

physical dimensions

Curb weight 3,319 lb 3,814 lb
Width 70.7 in 70.7 in
Height 57.9 in 56.6 in
Length 180.3 in 186 in
Wheelbase 103.3 in 108.9 in

road tests

Impreza WRX STI  vs
C63 AMG 
Top speed 158 mph 155 mph
1/4 mile 13.5 s 12.1 s
0-60mph 5 s 3.7 s

power & handling

Power-to-weight ratio 11.21 lb/hp 7.95 lb/hp
Maximum hp 296 HP @ 6,000 RPM 480 HP @ 6,800 RPM
Maximum torque 300 ft-lb @ 4,000 RPM 442 ft-lb @ 5,000 RPM
Steering system Rack and pinion Rack and pinion

suspension, wheels & brakes

Front brakes Disc Disc
Rear brakes Disc Disc
Front wheels 457/? 216 483/? 203
Rear wheels 457/? 216 483/? 229
Subaru Impreza WRX STI
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Mercedes-Benz
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