Differences What are the advantages of each

Front view of Mercedes-Benz SLR McLaren

Reasons to consider the
Mercedes-Benz V8

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More expensive sticker price $455k vs $300k More than 50% more expensive harder to own
Faster top speed 207 mph vs 199 mph 8 more mph; leaves lesser cars in the dust on the straights
Great lap time on the Top Gear track 1:20.90 vs 1:23.0 Around 5% great lap time on the Top Gear track
Lighter curb weight 3,725 lb vs 4,345 lb Around 15% lighter curb weight; less inertia to overcome when accelerating
Side view of Mercedes-Benz SL 65 AMG Black Series

Reasons to consider the
Mercedes-Benz Automatic V12 Coupe RWD

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More torque 738 ft-lb @ 2,200 RPM vs 577 ft-lb @ 1,750 RPM Around 30% stronger engine from a stand-still; more acceleration power
More powerful engine 670 HP @ 5,400 RPM vs 617 HP @ 6,500 RPM Around 10% stronger engine
Bigger engine 5,980 cc vs 5,400 cc More than 10% bigger engine

Specifications Full list of technical specs

general

SLR McLaren  vs
SL 65 AMG Black Series 
Brand Mercedes-Benz Mercedes-Benz
Price 455,000 300,000
Type of car Production car Production car
Year 2003-2009 2009

design

Body style Coupe Coupe

power & handling

Power-to-weight ratio 6.04 lb/hp 6.49 lb/hp
Maximum hp 617 HP @ 6,500 RPM 670 HP @ 5,400 RPM
Maximum torque 577 ft-lb @ 1,750 RPM 738 ft-lb @ 2,200 RPM
Engine placement Front Front
Steering system Rack and pinion Hydraulic Power Assisted Rack and Pinion

suspension, wheels & brakes

Front brakes Disc Mercedes-Benz 15.3 in Ventilated Discs
Rear brakes Disc Mercedes-Benz 14.1 in Ventilated Discs
Front wheels 457/? 229 483/? 241
Rear wheels 457/? 292 508/? 292

physical dimensions

Curb weight 3,725 lb 4,345 lb
Width 75.1 in 77.1 in
Height 49.6 in 51.4 in
Length 183.3 in 180.7 in
Front track width 64.5 in 66.3 in
Wheelbase 106.3 in 100.8 in

road tests

SLR McLaren  vs
SL 65 AMG Black Series 
Top speed 207 mph 199 mph
1/4 mile 11.6 s 11.7 s
0-60mph 3.6 s 3.7 s
0-100mph 7.4 s 7.6 s
0-200kph 10.7 s 10.9 s
Top gear time 1:20.90 1:23.0
20.6km nurburgring time 7:40.0 7:51.0
Hockenheim short lap time 1:13.50 1:12.20

transmission

Drivetrain Rear wheel drive 2WD
Gearing Traditional Traditional
# of gears 5 5
Gear ratios
1: 3.56:1
2: 2.19:1
3: 1.41:1
4: 1:1
5: 0.83:1

engine

Displacement 5,400 cc 5,980 cc
Cylinders V8 V12
Fuels
Gas
Compression ratio 8.8:1 9:1
Bore/stroke 3.82 in / 3.62 in 3.3 in / 3.7 in
Valvetrain Single overhead camshaft (SOHC) Single overhead camshaft (SOHC)
Valves per cylinder 3 3
Mercedes-Benz
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