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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Faster top speed 158 mph vs 146 mph 12 more mph; leaves lesser cars in the dust on the straights
Slightly lighter curb weight 3,319 lb vs 3,580 lb More than 5% lighter curb weight; less inertia to overcome when accelerating
Default view of Ford Mustang Boss 302

Reasons to consider the
Ford Mustang Boss 302

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More powerful engine 440 HP @ 7,500 RPM vs 296 HP @ 6,000 RPM Around 50% stronger engine
Much bigger engine 4,951 cc vs 2,457 cc More than 2x bigger engine
Faster to 60mph 4.6 s vs 5 s Around 10% faster to 60mph
More torque 380 ft-lb @ 4,500 RPM vs 300 ft-lb @ 4,000 RPM More than 25% stronger engine from a stand-still; more acceleration power

Specifications Full list of technical specs

general

Impreza WRX STI  vs
Mustang Boss 302 
Brand Subaru Ford
Type of car Production car Production car
Year 2011 2012
City mileage 17 MPG 17 MPG
Highway mileage 23 MPG 26 MPG

power & handling

Power-to-weight ratio 11.21 lb/hp 8.14 lb/hp
Maximum hp 296 HP @ 6,000 RPM 440 HP @ 7,500 RPM
Maximum torque 300 ft-lb @ 4,000 RPM 380 ft-lb @ 4,500 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/? 229
Rear wheels 457/? 216 483/? 241

road tests

Impreza WRX STI  vs
Mustang Boss 302 
Top speed 158 mph 146 mph
1/4 mile 13.5 s 13.2 s
0-60mph 5 s 4.6 s

transmission

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

engine

Displacement 2,457 cc 4,951 cc
Cylinders Flat 4 V8
Fuels
Gas

physical dimensions

Curb weight 3,319 lb 3,580 lb
Width 70.7 in 73.9 in
Height 57.9 in 55.1 in
Length 180.3 in 188.1 in
Wheelbase 103.3 in 107.1 in
Subaru Impreza WRX STI
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Ford Mustang Boss 302
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