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Mercedes-Benz SLK – 350 3.5 petrol

R172 · 172.457 · 225 kW / 306 hp

2011 - now · Petrol · Engine code M 276.956

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Car Details

Engine

Fuel
Petrol
Made
From 2011
Engine code
M 276.956
Engine size
3,498 cc (3.5 litres)
Engine power
306 hp (225 kW) at 6,500 rpm
Torque (pulling power)
370 Nm at 3,500 to 5,250 rpm
Cylinders
6, in a V
Turbo
No turbo (naturally aspirated)
Fuel injection
Direct injection
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Valves
24 (4 per cylinder)
Valve system
DOHC
Bore x stroke
92.9 x 86 mm
Compression ratio
12:1
Engine position
Front, lengthways (longitudinal)
Catalytic converter
Three-way catalytic converter

Fluids and capacities

Engine oil amount
6.5 litres
Engine oil grade
0W-30, 0W-40, 5W-30 or 5W-40
Coolant
10.4 litres
Fuel tank
60 litres

Gearbox and drive

Gearbox
7-speed automatic
Driven wheels
Rear-wheel drive

Wheels, brakes, suspension and steering

Tyre size
225/45 R17 or 245/40 R17
Wheel (rim) size
7.5J x 17 or 8.5J x 17
Front brakes
Ventilated discs
Rear brakes
Discs
Steering
Rack and pinion, hydraulic power steering
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Front suspension
Independent, McPherson type with coil spring and anti-roll bar
Rear suspension
Independent multi-link spring suspension with anti-roll bar

Size and weight

Body style
Convertible (roadster)
Seats
2
Doors
2
Length
4,134 mm
Width
1,810 mm
Height
1,301 mm
Weight (empty)
1,465 kg
Boot space
225 litres
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Boot space, rear seats folded
335 litres
Wheelbase
2,430 mm
Width with mirrors
2,006 mm
Front track
1,559 mm
Rear track
1,565 mm
Turning circle
10.52 metres
Maximum weight (loaded)
1,855 kg
Load it can carry
390 kg
Front overhang
870 mm
Rear overhang
834 mm

Speed and fuel use

Fuel use, mixed driving
7.1 l/100 km (about 14.1 km per litre)
Fuel use in town
9.9 l/100 km (about 10.1 km per litre)
Fuel use on the highway
5.5 l/100 km (about 18.2 km per litre)
Top speed
250 km/h
0 to 100 km/h
5.6 seconds
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CO2 emissions
167 g/km
Emission standard
Euro 5

Fuel use is from official tests; town driving usually uses more.

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Air drag (Cd)
0.32
Engine systems
Start-stop (engine switches off at lights)