2011 Mercedes-Benz SLK-Class Technical Data
| SLK300 | SLK350 | ||
| Vehicle type | two seat coupe/roadster with power-operated retractable hard top | two seat coupe/roadster with power-operated retractable hard top | |
| Chassis | Steel unibody | Steel unibody | |
| Engine | 90-degree V6 | 90-degree V6 Sport | |
| Valve arrangement | 4 valves per cylinder | 4 valves per cylinder | |
| Valvetrain | Double overhead camshaft per cylinder bank, two intake valves and two exhaust valves per cylinder | Double overhead camshaft per cylinder bank, two intake valves and two exhaust valves per cylinder | |
| Displacement (cc) | 2,996 | 3,498 | |
| Bore (in./mm) | 3.47 / 88.0 | 3.66 / 92.9 | |
| Stroke (in./mm) | 3.24 / 82.2 | 3.39 / 86.0 | |
| Compression ratio | 11.3:1 | 11.7:1 | |
| Horsepower @ rpm | 228 @ 6,000 | 300 @ 6,500 | |
| Torque (lb-ft.) @ rpm | 221 @ 2,500-5,000 | 265 @ 4,900 | |
| Intake system | Two-stage variable intake control | Two-stage variable intake control | |
| Max. engine speed (rpm) | 6,500 | 7,200 rpm | |
| Transmission | 6-speed manual or 7-speed automatic | Seven-speed automatic | |
| Shift controls | Optional Touch Shift manual shift control | Touch Shift manual shift control | |
| Gear ratios | Manual / Automatic | Automatic | |
| 1 | 4.46:1 / 4.38:1 | 4.38:1 | |
| 2 | 2.61:1 / 2.86:1 | 2.86:1 | |
| 3 | 1.72:1 / 1.92:1 | 1.92:1 | |
| 4 | 1.25:1 / 1.37:1 | 1.37:1 | |
| 5 | 1.00:1 / 1.00:1 | 1.00:1 | |
| 6 | 0.84:1 / 0.82:1 | 0.82:1 | |
| 7 | -- / 0.73:1 | 0.73:1 | |
| R | -4.061:1 / -3.42:1 | - 3.42:1 | |
| R2 "comfort mode" | -- / - 2.23:1 | - 2.23:1 | |
| Final drive | 3.27:1 | 3.27:1 | |
| Stability control | ESP stability control | ESP stability control | |
| Suspension | Four-wheel independent (sport shock and springs with lowered ride height on SLK55 AMG and Sport package) | Four-wheel independent (sport shock and springs with lowered ride height on SLK55 AMG and Sport package) | |
| front | McPherson independent 3-link | McPherson independent 3-link | |
| rear | Five-link with anti-squat geometry, coil springs, gas shocks, stabilizer bar | Five-link with anti-squat geometry, coil springs, gas shocks, stabilizer bar | |
| Steering | Rack-and-pinion with integrated hydraulic damper and Direct Steer system | Rack-and-pinion with integrated hydraulic damper and Direct Steer system | |
| Turns, lock-to-lock | 2.16 | 2.16 | |
| Steering ratio | variable | variable | |
| Turning radius (ft.) | 34.5 | 34.5 | |
| Wheels (in.) | front | 7.5 x 17 | 7.5 x 18 |
| rear | 8.5 x 17 | 8.5 x 18 | |
| Tires | front | 225 / 45 R 17 | 225 / 40 R 18 |
| rear | 245 / 40 R 17 | 245 / 35 R 18 | |
| Brakes | Hydraulic power assisted 4-wheel discs with 4-channel ABS anti-lock; Brake Assist | Hydraulic power assisted 4-wheel discs with 4-channel ABS anti-lock; Brake Assist | |
| Disc diameter (in./mm) | front | 11.8 / 300; ventilated | 13.0 / 330; ventilated & perforated |
| rear | 10.9 / 278; solid | 11.4 / 290; solid | |
| Disc thickness (in./mm) | front | 1.1 / 28 | 1.1 / 28 |
| rear | 0.35 / 9 | 0.39 / 10 | |
| Exterior dimensions (in/mm) | |||
| Wheelbase | 95.7 / 2,430 | 95.7 / 2,430 | |
| Length | 161.5 / 4,103 | 161.5 / 4,103 | |
| Width | 70.4 / 1,788 | 70.4 / 1,788 | |
| Height | 51.1 / 1,298 | 51.1 / 1,298 | |
| Ground clearance (in.) | 4.7 | 4.7 | |
| Track | front | 60.1 | 60.1 |
| rear | 61 | 61 | |
| Interior dimensions (in.) | |||
| Head room (w/sunroof) | front | 37.9 / 965 | 37.9 / 965 |
| 2nd / 3rd row | -- | -- | |
| Leg room | front | 42.5/1,079 | 42.5/1,079 |
| 2nd / 3rd row | -- | -- | |
| Shoulder room | front | 52.2 | 52.2 |
| 2nd / 3rd row | |||
| Cargo Length | Back row up | -- | -- |
| Back / 2nd row down | -- | -- | |
| Cargo floor width (narrowest) | -- | -- | |
| Capacities | |||
| Cabin volume (cu. ft.) | 48.8 | 48.8 | |
| Cargo volume | seats up | 9.8 (top up) / 6.5 (top down) | 9.8 (top up) / 6.5 (top down) |
| Back row down | -- | -- | |
| Cu rb weight (lbs.) | 3,208 | align="center">3,318 | |
| Gross vehicle weight rating (lbs.) | -- | -- | |
| Towing (lbs.) | -- | -- | |
| Max. total payload | 650 | 650 | |
| Fuel tank/reserve (gallons) | 18.5 / 2.4 | 18.5 / 2.4 | |
| Performance | |||
| 0-60 (seconds) | 6.1 | 5.4 | |
| Top speed (mph) | 155 (electronically limited) | 155 (electronically limited) | |
| Fuel mileage, city/hwy (EPA estimates) |
man: 17/26 / auto: 19/26 | 19 / 25 | |
