The Mercedes-benz Slk, a beloved roadster, is renowned for its sporty performance and luxurious features. For those seeking detailed information, understanding the technical specifications is crucial. This article provides a comprehensive overview of the technical data across different SLK models, allowing for a detailed comparison and appreciation of the engineering excellence behind this iconic vehicle. Whether you’re a potential buyer, a car enthusiast, or simply curious about what makes the SLK tick, delve into the figures that define its performance and design.
SLK Model Overview: Chassis and Vehicle Type
The Mercedes-Benz SLK is consistently designed as a 2-door, 2-passenger roadster across all its models, emphasizing its sporty and intimate driving experience. Each SLK variant is built upon a robust steel unibody chassis, ensuring a solid foundation for both performance and safety. This commonality in chassis design highlights Mercedes-Benz’s commitment to structural integrity and consistent vehicle dynamics throughout the SLK range.
Engine Specifications: Powering the Mercedes-Benz SLK
The engine is at the heart of any vehicle, and the Mercedes-Benz SLK offers a range of powertrains to suit different performance preferences. Let’s examine the engine specifications across the SLK300, SLK350, and the high-performance AMG SLK55:
| Feature | SLK300 | SLK350 | AMG SLK55 |
|---|---|---|---|
| Type | 2.0-liter Inline 4-Cylinder | 3.5-liter V6 | 5.5-liter AMG V8 |
| Engine Block Material | Aluminum | Aluminum | Aluminum |
| Cylinder Head Material | Alloy | Alloy | Alloy |
| Valve Arrangement | 4 valves/cylinder | 4 valves/cylinder | 4 valves/cylinder |
| Displacement (cc) | 1,991 | 3,498 | 5,461 |
| Bore (in.) | TBA | 3.66 | 3.86 |
| Stroke (in.) | TBA | 3.38 | 3.56 |
| Compression Ratio | 9.8 : 1 | 12.0 : 1 | 12.6 : 1 |
| Horsepower @ rpm | 241 @ 5,500 | 302 @ 6,500 | 415 @ 6,800 |
| Torque (lb-ft) @ rpm | 278 @ 1,200-4,000 | 278 @ 3,500-5,250 | 398 @ 4,500 |
| Intake System | Turbocharged, Direct Injection | Direct-Injection | Direct-Injection |
| Max. Engine Speed (rpm) | TBA | 7,000 | 7,200 |
As shown in the table, the SLK range offers a progression in engine size and power. The SLK300 features a responsive 2.0-liter turbocharged inline-4, balancing efficiency and performance. Stepping up, the SLK350 boasts a larger 3.5-liter V6 for increased power and a smoother driving experience. For ultimate performance, the AMG SLK55 is equipped with a potent 5.5-liter AMG V8 engine, delivering significantly higher horsepower and torque figures. All engines utilize aluminum blocks and alloy cylinder heads for weight reduction and improved thermal efficiency.
Performance Metrics: Acceleration and Fuel Economy
Performance figures are key to understanding the driving dynamics of the Mercedes-Benz SLK. The following table details the acceleration, top speed, and fuel economy for each model:
| Feature | SLK300 | SLK350 | AMG SLK55 |
|---|---|---|---|
| 0-60 mph (sec.) | 5.8 | 5.4 | 4.5 |
| Top Speed (limited) (mph) | 155 | 155 | 155 (174*) |
| Fuel Economy (city/hwy/comb.) | 25/32/28 | 21/29/24 | 19/28/22 |
*174mph with AMG Development Package
The performance data clearly illustrates the increasing capabilities across the SLK range. The AMG SLK55 stands out with its rapid 0-60 mph acceleration of just 4.5 seconds. While all models share a limited top speed of 155 mph, the AMG SLK55 can reach 174 mph with the optional AMG Development Package, highlighting its track-ready potential. Fuel economy naturally varies with engine size and performance, with the SLK300 offering the most economical figures, while the AMG SLK55 prioritizes power over efficiency.
Transmission and Drive Configuration
The transmission system plays a critical role in delivering power to the wheels and shaping the driving experience. Here’s a look at the transmissions offered in each Mercedes-Benz SLK model:
| Feature | SLK300 | SLK350 | AMG SLK55 |
|---|---|---|---|
| Type | 9G-TRONIC | 7G-TRONIC PLUS | AMG SPEEDSHIFT 7G- TRONIC PLUS |
| Drive Configuration | – | – | – |
| Gear Ratios | – | – | – |
| 1st Reverse Gear | – | – | – |
| 2nd Reverse Gear | – | – | – |
| Final Drive | – | – | – |
The SLK300 benefits from the advanced 9G-TRONIC 9-speed automatic transmission, known for its smooth and efficient gear changes. The SLK350 utilizes the 7G-TRONIC PLUS 7-speed automatic. The AMG SLK55 is equipped with the AMG SPEEDSHIFT 7G-TRONIC PLUS, which is specifically tuned for quicker shifts and enhanced responsiveness to match the AMG engine’s performance characteristics. All models are rear-wheel drive, a classic configuration for sports roadsters, emphasizing balanced handling and driving pleasure.
Suspension, Tires & Brakes: Handling and Control
The suspension, tires, and brakes are vital for handling, safety, and overall driving dynamics. While specific details are to be confirmed (TBA in the original data), key aspects are outlined below:
| Feature | SLK300 | SLK350 | AMG SLK55 |
|---|---|---|---|
| Suspension Type | – | – | – |
| Steering | – | – | – |
| Steering Ratio | – | – | – |
| Turning Circle | – | – | – |
| Standard Tire | High-Performance | High-Performance | High-Performance |
| Standard Front Tire Size | 225/45 R17 | 225/40 R18 | 225/40 R18 |
| Standard Rear Tire Size | 245/40 R17 | 245/35 R18 | 245/35 R18 |
| Standard Front Wheel | 7.5J X 17 | 7.5J X 17 | 7.5J X 18 |
| Standard Rear Wheel | 8.5J X 17 | 8.5J X 17 | 9J X 18 |
| Front Wheel Brake Design | – | – | – |
| Rear Wheel Brake Design | – | – | – |
| Front Brake Disc Diameter (in.) | – | – | – |
| Front Brake Disc Thickness (in.) | – | – | – |
| Rear Brake Disc Diameter (in.) | – | – | – |
| Rear Brake Disc Thickness (in.) | – | – | – |
All SLK models are equipped with high-performance tires, indicating a focus on sporty handling and grip. The SLK350 and AMG SLK55 models feature larger 18-inch wheels compared to the SLK300’s 17-inch wheels, enhancing both aesthetics and potentially handling performance. The AMG SLK55 further distinguishes itself with wider rear wheels (9J x 18) compared to the other models (8.5J x 17), accommodating wider rear tires for improved traction under high performance driving conditions.
Exterior and Interior Dimensions & Capacities
Understanding the dimensions provides insight into the SLK’s size and space utilization.
Exterior Dimensions (inches)
| Feature | SLK300 | SLK350 | AMG SLK55 |
|---|---|---|---|
| Wheelbase | 95.7 | 95.7 | 95.7 |
| Length | 162.8 | 162.8 | 163.2 |
| Width including mirrors | 79.0 | 79.0 | 79.0 |
| Height | 51.2 | 51.2 | 51.2 |
| Track width front | 61.4 | 61.4 | 61.0 |
| Track width rear | 61.6 | 61.6 | 61.7 |
Interior Dimensions (inches)
| Feature | SLK300 | SLK350 | AMG SLK55 |
|---|---|---|---|
| Headroom (top up) | 38.0 (39.1 w/ Pano or MAGIC SKY) | 38.0 (39.1 w/ Pano or MAGIC SKY) | 38.0 (39.1 w/Pano or MAGIC SKY) |
| Leg room | 42.5 | 42.5 | 42.5 |
| Shoulder room | 52.2 | 52.2 | 52.2 |
Capacities
| Feature | SLK300 | SLK350 | AMG SLK55 |
|---|---|---|---|
| Trunk Capacity (roof up/down) (cu.ft.) | 10.1/6.4 | 10.1/6.4 | 10.1/6.4 |
| Curb weight (lbs.) | 3,417 | 3,417 | 3,583 |
| Fuel tank (gallons) | 15.9 | 15.9 | 18.5 |
The exterior dimensions are remarkably consistent across the SLK models, with minor variations in length and track width. Interior dimensions also remain the same, offering similar headroom, legroom, and shoulder room across the range. Trunk capacity is identical for all models, while the AMG SLK55 has a slightly higher curb weight and a larger fuel tank, likely due to its more powerful engine and performance-oriented components.
Conclusion: Mercedes-Benz SLK Technical Data at a Glance
This technical data overview provides a detailed look into the specifications of the Mercedes-Benz SLK models. From engine variations to dimensional consistency, these figures highlight the engineering and design principles behind this popular roadster. Whether you prioritize fuel efficiency and agility (SLK300), a balance of power and refinement (SLK350), or outright high performance (AMG SLK55), the Mercedes-Benz SLK range offers a compelling option in the luxury roadster segment.
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