Mercedes-Benz SLK (R171 facelift ) SLK 280 V6 (231 Hp) 7G-TRONIC

The Mercedes-Benz SLK (R171, facelift 2008) SLK 280 V6 (231 Hp) 7G-TRONIC: A Refined Roadster Experience

The Mercedes-Benz SLK, a name synonymous with compact luxury roadsters, received a significant refresh in April 2008, ushering in the updated R171 generation. Among the variants offered during this period, the SLK 280 V6 (231 Hp) with the 7G-TRONIC automatic transmission represented a compelling blend of performance, sophistication, and open-top driving pleasure. Positioned in the premium compact roadster segment, the

Mercedes-Benz SLK (R171, facelift 2008)

continued its legacy as a stylish two-seater, known for its innovative retractable hardtop roof, which offered the security and refinement of a coupe with the exhilarating freedom of a convertible. This specific iteration, produced for a brief but impactful year from April 2008 to April 2009, showcased Mercedes-Benz’s commitment to continuous improvement, integrating subtle yet effective enhancements across its design, powertrain, and features to maintain its competitive edge in a demanding market.

The R171 generation, initially launched in 2004, was already a success, building on the foundation laid by the original R170 SLK. The 2008 facelift aimed to modernize its aesthetics and enhance its mechanical prowess. The SLK 280, in particular, was powered by a potent V6 engine, delivering a strong performance suitable for both spirited driving and comfortable cruising. Its rear-wheel-drive architecture and advanced 7G-TRONIC automatic transmission further solidified its standing as a driver-focused machine, albeit one wrapped in the undeniable luxury and comfort expected from a Mercedes-Benz product. This article delves into the specifics of this refined roadster, examining its powertrain, design elements, technical specifications, and its lasting impact on the automotive landscape.

Engine and Performance of the Mercedes-Benz SLK (R171, facelift 2008)

Powertrain Overview

At the heart of the

Mercedes-Benz SLK (R171, facelift 2008)

SLK 280 lies a naturally aspirated 3.0-liter (2996 cm3 or 182.83 cu. in.) V6 engine, internally designated as the M 272.942. This powerplant was engineered for a smooth, linear power delivery characteristic of Mercedes-Benz engines of the era. It generates a robust 231 horsepower at 6000 rpm, providing ample thrust for a car of its size and weight. Torque is equally impressive, peaking at 221.27 lb.-ft. across a broad range from 2500 to 5000 rpm, ensuring strong acceleration and flexible in-gear performance.

The V6 engine features a DOHC (Double Overhead Camshaft) valvetrain with four valves per cylinder, optimizing airflow for enhanced combustion efficiency and power output. Its multi-port manifold injection system precisely meters fuel, contributing to both performance and fuel economy. With a compression ratio of 11.3:1, the engine is tuned for premium gasoline, extracting maximum energy from every drop. The engine’s front, longitudinal layout contributes to the car’s balanced weight distribution, a crucial factor for its dynamic handling characteristics.

Transmission and Dynamics

Power is seamlessly transferred to the rear wheels via Mercedes-Benz’s sophisticated 7G-TRONIC automatic transmission. This seven-speed gearbox was a benchmark in its time, offering quick, smooth shifts that could adapt to various driving styles. Its multiple ratios allowed the engine to operate within its optimal power band more frequently, contributing to both exhilarating acceleration and improved fuel efficiency during cruising.

The SLK 280 is a genuinely quick roadster for its class. It sprints from 0 to 60 mph in a swift 5.9 seconds (0-100 km/h in 6.2 seconds) and reaches an electronically limited top speed of 155.34 mph (250 km/h). Despite its performance credentials, Mercedes-Benz engineers also focused on efficiency. The combined fuel economy is rated between 25.3 and 25.8 US mpg (9.1-9.3 l/100 km), which was respectable for a powerful V6 roadster in the late 2000s. CO2 emissions range from 216 to 221 g/km, meeting the Euro 4 emission standard. The car’s weight-to-power ratio of 6.1 kg/Hp (165 Hp/tonne) further underscores its sprightly nature.

Design and Features

Exterior and Interior Design

The 2008 facelift brought subtle yet effective design updates to the R171 SLK. The SLK 280 retains the iconic roadster silhouette with its long hood, short rear deck, and muscular fenders. Key exterior revisions included redesigned front and rear bumpers, a modified grille, and updated taillight clusters, giving the car a fresher, more aggressive appearance while preserving its elegant lines. The most distinguishing feature, of course, remained the vario-roof – Mercedes-Benz’s innovative retractable hardtop. This system allowed the SLK to transform from a secure, quiet coupe into an open-air roadster in mere seconds, offering the best of both worlds.

Inside, the two-seater cabin of the SLK 280 exudes Mercedes-Benz luxury. The facelift introduced updated interior materials, refined trim options, and a revised instrument cluster, enhancing the sense of quality and modernity. The cockpit is driver-focused, with controls intuitively placed. High-quality leather and aluminum accents were common, creating a sophisticated and comfortable environment. Despite its compact dimensions, the SLK offers surprising comfort for two occupants, making it suitable for longer journeys. Trunk space is a modest 7.35 cu. ft. (208 liters), which is typical for a compact roadster, especially one with a retractable hardtop that consumes some of that space when stowed.

Chassis, Safety, and Technology

The R171 SLK’s chassis was engineered for a balance of sporty handling and ride comfort. It features an independent McPherson-type front suspension with a transverse stabilizer, paired with an independent multi-link rear suspension, also with a transverse stabilizer. This setup ensures precise handling and excellent road holding. Braking performance is handled by ventilated discs at the front and solid discs at the rear, complemented by an Anti-lock Braking System (ABS) for enhanced safety under hard braking.

Steering is a hydraulic rack and pinion system, providing direct feedback and a connected feel to the road. The car rides on 16-inch wheels, with 205/55 R 16 tires at the front and wider 225/50 R 16 tires at the rear, contributing to its stable stance and grip. In terms of safety, the SLK 280 came equipped with a suite of passive and active safety features, including multiple airbags and Mercedes-Benz’s Electronic Stability Program (ESP), which helps maintain control during challenging driving conditions. The 2008 facelift also saw enhancements to the infotainment system and connectivity options, reflecting the increasing demand for integrated technology in luxury vehicles.

Technical Specifications

Legacy and Market Impact

The Mercedes-Benz SLK (R171, facelift 2008) SLK 280 V6 7G-TRONIC, though a relatively short-lived variant within the R171’s lifecycle, played a crucial role in maintaining the SLK’s appeal in the competitive luxury roadster segment. The R171 generation, often dubbed the “Baby SL” due to its styling cues borrowed from the larger Mercedes-Benz SL, was highly regarded for its ability to combine the exhilaration of open-top motoring with the comfort, safety, and refinement of a premium German coupe