2004 Mercedes-Benz SLK (R171) Dimensions, Size & Specs

The width of the SLK R171 varies between 1777 mm and 1794 mm (about 70.0 to 70.6 inches) without the mirrors. When you include the opened mirrors, the width expands to 1970 mm (77.6 inches). This wider dimension with mirrors deployed is important to consider when driving through narrow spaces or parking. Without mirrors, the car retains a slim profile that enhances its sporty, compact character and makes parking easier. However, drivers need to be mindful of the increased width with mirrors open, especially in tight city environments or narrow parking spots. The balance between compact width and added mirror clearance provides overall safe and confident urban driving.

The height of the SLK R171 ranges from 1271 mm to 1298 mm (approximately 50.0 to 51.1 inches). This low-slung profile promotes a sporty and aerodynamic silhouette, lowering the car’s center of gravity which improves handling, cornering stability, and overall driving dynamics. However, the low height also means that the interior headroom is more limited compared to taller vehicles, suitable primarily for two passengers with a focus on sporty comfort rather than expansive cabin space. This is typical for roadsters which prioritize driving experience and style over interior volume.

The curb weight of the SLK R171 is between 1315 kg and 1465 kg (approximately 2,899 to 3,230 pounds). This relatively lightweight construction for a luxury roadster enhances performance by allowing the vehicle’s engine to offer responsive acceleration and agile handling characteristics. A lighter weight also assists in achieving better fuel efficiency and braking performance. The variation in weight depends on the trim and optional equipment fitted, such as larger rims or enhanced safety features. Overall, a curb weight within this range strikes a balance between solid structural integrity and sporty dynamics, making the SLK R171 a nimble and efficient roadster.

The maximum weight, or Gross Vehicle Weight Rating (GVWR), of the SLK R171 spans from 1705 kg to 1850 kg (about 3,759 to 4,078 pounds). This includes the combined weight of the car, passengers, cargo, and any additional equipment. Staying within this limit is crucial for maintaining vehicle safety, optimal handling, and braking performance. The maximum weight rating ensures the chassis and suspension can safely support the load without compromising structural integrity or driving behavior. Given the compact size and focus on sporty driving, the SLK R171's weight capacity is well suited for a roadster with two occupants and occasional luggage.

The Mercedes-Benz SLK R171 offers a luggage capacity of 208 liters (about 7.34 cubic feet). This storage volume is modest but typical for a compact two-seater roadster, providing just enough space for essential items such as small suitcases, groceries, or weekend gear. While it may not be sufficient for large family trips or extended vacations, the trunk can accommodate daily errands and short road trips comfortably. The space efficiency is optimized considering the roadster's retractable hardtop mechanism, which slightly reduces the trunk area when the roof is stowed away. Overall, the luggage capacity balances sporty design with practical utility for its segment.

Yes, the Mercedes-Benz SLK R171 fits comfortably in a standard garage. With a length of approximately 4087-4089 mm (161.0-161.1 inches) and a width of 1777-1794 mm (70.0-70.6 inches) excluding mirrors, it is compact enough to allow for convenient parking in most single-car garages, which typically have a width of 2.4 to 3 meters and a length of 5 to 6 meters. Even accounting for the opened mirrors width of 1970 mm (77.6 inches), the car should fit with adequate clearance, though careful mirror folding is recommended in tighter spaces. The low height of about 1271-1298 mm (50.0-51.1 inches) easily clears standard garage door heights. Overall, the SLK R171 is well-suited to indoor parking.

Compared to its predecessor, the R170 (produced 1996-2004), the SLK R171 has evolved slightly in dimensions, gaining a bit more length, width, and height to improve interior comfort and road presence. The R171 measures about 4087-4089 mm (161.0-161.1 inches) in length versus approximately 3980 mm (156.7 inches) for the R170, making the newer generation roughly 100 mm longer. The width also increased from about 1740 mm (68.5 inches) to up to 1794 mm (70.6 inches), enhancing stability and cabin spaciousness. Height went from roughly 1280 mm (50.4 inches) up to 1298 mm (51.1 inches) in the R171, creating a slightly more planted profile. These dimensional changes reflect a more modern look, improved safety, and a roomier cabin while maintaining the roadster’s characteristic compact footprint.

The Mercedes-Benz SLK R171’s size is competitive within the compact luxury roadster segment, sharing similar dimensions with rivals such as the BMW Z4 (first generation E85) and the Porsche Boxster (986). For example, the Z4 measures approximately 4170 mm (164.2 inches) in length, a bit longer than the SLK, while the Boxster is close in size with a length around 4230 mm (166.5 inches). Width-wise, the SLK's 1777-1794 mm (70-70.6 inches) is comparable to these competitors, providing a similarly sporty stance without feeling cramped. Height on the SLK is notably low, supporting a classic roadster driver position. Luggage capacity at 208 liters is average for this class, balancing practicality with style. Overall, the SLK offers a harmonious blend of compact proportions and premium roadster appeal within its segment.

The Mercedes-Benz SLK R171 comes with a variety of wheel sizes ranging from 16 to 18 inches in diameter. Rim sizes include options like 7 J x 16 H2, 8.5 J x 17 H2, and 8.5 J x 18 H2, matched with tire configurations such as 205/55 R16, 225/50 R16, 245/40 R17, and 245/35 ZR18. Smaller wheels (16 inches) generally provide a more comfortable ride due to greater tire sidewall cushioning, ideal for daily driving and absorbing road imperfections. Larger wheels (17-18 inches) enhance handling precision, cornering grip, and overall sporty aesthetics, though they may slightly reduce ride comfort and increase road noise. Tire width ranges from 205 mm up to 245 mm, affecting grip and stability, with wider tires improving cornering but potentially reducing fuel efficiency. The variety allows drivers to choose a setup based on their preference for ride comfort versus performance.