2012 Mercedes-Benz SLK-Class Technical Data
| SLK250 | SLK350 | SLK55 AMG | ||
| Vehicle type | Two-door, convertible hardtop | Two-door, convertible hardtop | Two-door, convertible hardtop | |
| Chassis | Lightweight steel unibody | Lightweight steel unibody | Lightweight steel unibody | |
| Engine | Inline 4 | 60-degree V6 | 90-degree V8 | |
| Valve arrangement | Four valves per cylinder | Four valves per cylinder | Four valves per cylinder | |
| Valvetrain | DOHC per cylinder | DOHC per cylinder | DOHC per cylinder | |
| Displacement (cc) | 1,796 | 3,498 | 5,461 | |
| Bore (in.) | 3.23 | 3.66 | 3.86 | |
| Stroke (in.) | 3.35 | 3.39 | 3.56 | |
| Compression ratio | 9.3:1 | 12.0:1 | 12.6:1 | |
| Horsepower @ rpm | 201 @ 5,500 | 302 @ 6,500 | 415 @ 6,800 | |
| Torque (lb-ft.) @ rpm | 229 @ 2,000 - 4,300 | 273 @ 3,500 - 5,250 | 398 @ 4,500 | |
| Intake system | Turbo, Direct Injection | Naturally Aspirated, Direct Injection | Naturally Aspirated, Direct Injection w/ AMG Cylinder Management & ECO Stop/Start |
|
| Max. engine speed (rpm) | 6,450 | 6,800 | 7,200 | |
| Transmission | Six-speed manual standard / Seven-speed automatic optional |
Seven-speed automatic | AMG SPEEDSHIFT PLUS Seven-speed automatic |
|
| Shift controls | For auto: Shift paddles and Touch Shift manual shift control. Selectable Manual mode. |
Shift paddles and Touch Shift manual shift control. Selectable Manual mode. | Shift paddles and Touch Shift manual shift control. Selectable Manual mode. | |
| Gear ratios | Man / Auto | Automatic | Automatic | |
|
1
|
TBD / 4.38:1 | 4.38:1 | 4.38:1 | |
|
2
|
TBD / 2.86:1 | 2.86:1 | 2.86:1 | |
|
3
|
TBD / 1.92:1 | 1.92:1 | 1.92:1 | |
|
4
|
TBD / 1.37:1 | 1.37:1 | 1.37:1 | |
|
5
|
TBD / 1.00:1 | 1.00:1 | 1.00:1 | |
|
6
|
TBD / 0.82:1 | 0.82:1 | 0.82:1 | |
|
7
|
- / 0.73:1 | 0.73:1 | 0.73:1 | |
|
R
|
TBD / - 3.42:1 | - 3.42:1 | - 3.42:1 | |
|
R2 "comfort mode"
|
- / - 2.23:1 | - 2.23:1 | - 2.23:1 | |
| Final drive | 3.07:1 | 3.07:1 | 2.82:1 | |
| Stability control | ESP stability control | ESP stability control | ESP stability control | |
| Suspension | ||||
| front | Independent suspension, coil spring, Single-tube gas pressure | Independent suspension, coil spring, Single-tube gas pressure |
Independent suspension, coil spring, Double-tube gas pressure |
|
| rear | Independent multi-link suspension, Coil Spring, Single tube gas pressure |
Independent multi-link suspension, Coil Spring, Single tube gas pressure |
Independent multi-link suspension, Coil Spring, Single tube gas pressure |
|
| Steering | Hydraulic rack-and-pinion with ECO power steering pump, Direct-Steer variable ratio rack | Hydraulic rack-and-pinion with ECO power steering pump, Direct-Steer variable ratio rack |
Hydraulic rack-and-pinion with ECO power steering pump, Direct-Steer variable ratio rack |
|
| Turning radius (ft.) | 34.5 | 34.5 | 34.5 | |
| Wheels (in.) | front | 17 | 18 | 18 |
| rear | 17 | 18 | 18 | |
| Tires | front | 225 / 45 R17 | 225 / 40 R18 | 235 / 40 R18 |
| rear | 245 / 40 R17 | 245 / 35 R18 | 255 / 35 R18 | |
| Brakes | ||||
| Disc diameter (in./mm) |
front | 12.7 (ventilated) | 13.5 (perforated & ventilated) | 14.2" (perforated & ventilated) |
| rear | 11.8 (solid) | 11.8 (solid) | 13.0 (solid) | |
| Disc thickness (in./mm) |
front | 1.3 / 32 | 1.3 / 32 | 1.4 / 36 |
| rear | 0.4 / 10 | 0.4 / 10 | 0.9 / 22 | |
| Exterior dimensions (in) | ||||
| Wheelbase | 95.70 | 95.70 | 95.70 | |
| Length | 162.76 | 162.76 | 163.20 | |
| Width | 79.00 | 79.00 | 79.00 | |
| Height | 51.2 | 51.2 | 51.2 | |
| Ground clearance (in.) | ||||
| Track | front | 61.40 | 61.40 | 61.00 |
| rear | 61.60 | 61.60 | 61.70 | |
| Interior dimensions (in.) | ||||
| Head Room | front | 38.00 | 38.00 | 38.00 |
| 2nd / 3rd row | N/A | N/A | N/A | |
| Leg Room | front | 42.50 | 42.50 | 42.50 |
| 2nd / 3rd row | N/A | N/A | N/A | |
| Shoulder room | front | 52.20 | 52.20 | 52.20 |
| 2nd row | N/A | N/A | N/A | |
| Cargo Length | Back row up | |||
| Back row down | N/A | N/A | N/A | |
| Capacities | ||||
| Cabin volume (cu. ft.) | ||||
| Cargo Volume | seats up | 10.1 (roof closed) | 10.1 (roof closed) | 10.1 (roof closed) |
| Back row down | 6.4 (open roof) | 6.4 (open roof) | 6.4 (open roof) | |
| Curb weight (lbs.) | 3,308 (est.) | 3,397 (est.) | 3,549 | |
| Towing (lbs.) | N/A | N/A | N/A | |
| Max. total payload | ||||
| Fuel tank/reserve (gallons) | 18.5 | 18.5 | 18.5 | |
| AdBlue tank (gallons) | ||||
| Performance | ||||
| 0-60 (seconds) | 6.5 | 5.4 | 4.5 | |
| Top speed (mph) | 150 | 155 | 155 (174*) | |
| Fuel mileage, city/hwy/comb | 23 / 31 (est.) | 20 / 29 / 23 | TBD / TBD / 22 (est.) | |
| *=w/AMG Handling Pkg Note: Technical specifications are subject to change. Please visit the media web site http://media.mbusa.com for the latest information. |
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