Road Tests Real world tests of SLK 55 AMG vs Mustang GT 5.0

Differences What are the advantages of each

Side view of Mercedes-Benz SLK 55 AMG

Reasons to consider the
Mercedes-Benz

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More expensive sticker price $50k vs $30k More than 65% more expensive harder to own
Slightly bigger engine 5,461 cc vs 5,000 cc Around 10% bigger engine
Slightly lighter curb weight 3,408 lb vs 3,626 lb More than 5% lighter curb weight; less inertia to overcome when accelerating
Front view of Ford Mustang GT 5.0

Reasons to consider the
Ford Mustang GT 5.0

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Slightly faster in the quarter mile 12.7 s vs 13 s Almost the same
Slightly faster to 60mph 4.3 s vs 4.5 s Around 5% faster to 60mph

Specifications Full list of technical specs

general

SLK 55 AMG  vs
Mustang GT 5.0 
Brand Mercedes-Benz Ford
Price 50,000 30,495
Type of car Production car Production car
Year 2012 2011
City mileage 20 MPG 17 MPG
Highway mileage 29 MPG 26 MPG

transmission

Drivetrain RWD RWD
Gearing Traditional Traditional
# of gears 7 6

engine

Displacement 5,461 cc 5,000 cc
Cylinders V8 V8
Fuels
Gas
Compression ratio 12.6:1 11.5:1
Bore/stroke 3.9 in / 3.6 in 3.63 in / 3.65 in

road tests

SLK 55 AMG  vs
Mustang GT 5.0 
Top speed 155 mph 151 mph
1/4 mile 13 s 12.7 s
0-60mph 4.5 s 4.3 s

power & handling

Power-to-weight ratio 8.21 lb/hp 8.8 lb/hp
Maximum hp 415 HP @ 6,800 RPM 412 HP @ 6,500 RPM
Maximum torque 398 ft-lb @ 4,500 RPM 390 ft-lb @ 4,250 RPM
Steering system Rack and pinion Rack and pinion

suspension, wheels & brakes

Front brakes Disc Disc
Rear brakes Disc Disc

physical dimensions

Curb weight 3,408 lb 3,626 lb
Width 71.5 in 73.9 in
Height 51.2 in 55.6 in
Length 162.8 in 188.1 in
Wheelbase 95.7 in 107.1 in
Mercedes-Benz
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Ford Mustang GT 5.0
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