Launched initially as the SLK in 1996, the Mercedes-benz Slc-class, underwent a name change in 2016, but its essence as a desirable roadster has remained constant throughout its generations. Spanning from its inception until 2020, this model line presented a compelling alternative to the BMW Z Series and offered a premium experience compared to more budget-friendly convertibles like the Mazda Miata. Now exclusively available on the used market, the Mercedes-Benz SLC is poised to achieve classic status for numerous compelling reasons, which we will explore.
For this analysis, we focus on the SLC 350 variant, previously known as the SLK 350, positioned just below the AMG models. This trim level strikes an ideal balance of affordability, accessible performance, and a naturally aspirated engine, making it a particularly attractive option in the used sports car segment. While it may not be the first model that springs to mind when considering a fun and reasonably priced weekend convertible, the SLC 350, or its SLK 350 predecessor, surprisingly ticks many boxes for the discerning buyer.
Our research incorporates specifications directly from Mercedes-Benz for the Mercedes-Benz SLK 350, while current market values are derived from Classic.com and J.D. Power. Additional insights and data points are sourced from reputable platforms like FuelEconomy.gov and Edmunds.
Why the Mercedes-Benz SLC 350 (Formerly SLK 350) is Gaining Classic Appeal
The Mercedes-Benz SLC 350 we are highlighting here, specifically the second generation model (R171), embodies the core attributes that contribute to a classic sports car: performance, elegant design, German engineering excellence, and all at an appealing price point. While the first generation SLK (R170) debuted in 1996, the second generation, launched in 2004 and continuing until 2010, marked a significant evolution in both exterior and interior styling, presenting a noticeably more contemporary and refined aesthetic. A facelift in 2008 further enhanced its visual appeal, incorporating a distinctive, pointed front end reminiscent of the iconic Mercedes-Benz SLR McLaren, adding to its desirability.
While the original R170 SLK possesses a distinct charm reflective of its era, the R171 SLC (then SLK) has aged remarkably well. Its design language aligns seamlessly with other Mercedes-Benz models of its time, contributing to a timeless quality that still resonates today. This enduring style, especially evident in the facelifted versions, solidifies the SLC’s potential as a future classic, even before considering its powertrain and attractive price. Furthermore, all SLC models feature a signature folding hardtop roof, a feature that distinguished it from contemporaries like the Mazda Miata and the BMW Z4 during its initial run, although the Z4 eventually adopted a similar roof design.
Mercedes-Benz SLC 350: Balancing Performance and Refinement
[](Mercedes-Benz SLK 350 engine bay overview)
Mercedes-Benz SLC 350 Specifications (Facelift Model)
| Feature | Specification |
|---|---|
| Engine | 3.5-liter Naturally Aspirated V6 |
| Horsepower | 302 hp |
| Torque | 266 lb-ft |
| Drivetrain | Front-Engine, Rear-Wheel Drive |
| Transmission | 6-speed Manual, 7-speed Automatic |
| 0-60 mph | 5.3 seconds |
| Top Speed | 155 mph |
One of the most compelling aspects of the Mercedes-Benz SLC 350 is its powertrain – a naturally aspirated V6 engine that delivers a rewarding driving experience. Buyers had the choice of a slick six-speed manual transmission for purists or a responsive seven-speed automatic for effortless cruising. In a market increasingly dominated by smaller turbocharged engines, the SLC 350’s 3.5-liter M272 V6 engine stands out for its smooth power delivery and robust 302 horsepower output. To put this into perspective, a 2005 Mazda Miata offered a maximum of 170 horsepower from its 2.0-liter engine. This power advantage positions the SLC-Class in a higher performance bracket, making it a more capable grand tourer, albeit with a slightly heavier build compared to more overtly sporty roadsters.
The R171 SLC 350’s engine is renowned for its reliability and proven track record, having been utilized across a wide range of Mercedes-Benz models from 2004 to 2017. This all-aluminum engine features dual overhead camshafts, four valves per cylinder, and variable valve timing, contributing to both performance and efficiency. While EPA fuel economy ratings were 19 MPG combined (16 MPG city, 23 MPG highway), spirited driving will naturally reduce these figures. However, fuel economy is unlikely to be the primary concern for most SLC 350 buyers. It’s worth noting that the post-2008 facelift models boasted the full 302 horsepower, making them slightly more desirable than earlier models which produced 268 horsepower.
While the SLC range included models with less powerful engines, the 350 variant represented the pinnacle of non-AMG performance. For those seeking even greater power, the SLK 55 AMG (later SLC 55 AMG) offered a potent naturally aspirated 5.4-liter V8 with 355 horsepower. However, the SLC 350 occupies the sweet spot in the lineup, balancing performance with reasonable running costs and an attractive price point in the used market. Importantly, this excellent 3.5-liter V6 engine was also carried forward into the subsequent R172 generation of the SLC.
Mercedes-Benz SLC: Premium Features for Everyday Enjoyment
Another significant advantage of the Mercedes-Benz SLC-Class lies in its comprehensive list of standard and available features, befitting its status as a premium German roadster. Unlike more basic roadsters, the SLC 350 offers features designed for comfort and convenience, even with the top down in cooler weather, such as the Air Scarf system which gently warms the neck area of occupants. Standard features were generous and included highlights such as:
- 8-way power-adjustable driver and passenger seats
- Power and heated side mirrors
- Automatic headlamps
- Pre-collision safety system
- 9-speaker premium sound system
- Cruise control
- Dual-zone automatic climate control
- 17-inch alloy wheels
[](Google News Icon)
Affordable Entry Point: Used Mercedes-Benz SLC 350 Values
[](Mercedes-Benz SLK 350 red front profile)
| Mercedes-Benz SLC 350 Average Used Value |
|---|
| Classic.com Average Value |
| J.D. Power Average Price Paid |
The appealing affordability of the used Mercedes-Benz SLC 350 is a significant draw, particularly as running costs like fuel, maintenance, and insurance can be higher compared to more basic roadsters. Fortunately, the SLC 350 trades hands at surprisingly accessible prices. Currently, a facelifted 2008 model averages between $8,000 and $13,000 according to recent market data. Classic.com estimates an average value of $12,828 based on auction results from over 70 transactions spanning five years. Considering that this model, equipped with an automatic transmission, originally retailed for around $49,450, it represents a considerable value proposition on the used market today.
Looking at the broader R171 SLK range, even entry-level models like the SLK 200 Kompressor can be found for as little as $6,000. However, with horsepower figures ranging from 161 to 181 hp in the SLK 200, the SLC 350 offers a much more compelling performance upgrade for a modest price increase. If J.D. Power’s average price of around $7,875 is closer to the actual market value, the SLC 350 becomes an exceptionally worthwhile purchase, assuming reasonable reliability, which we will address below.
Mercedes-Benz SLC 350 Reliability Considerations
German engineering is often associated with robust reliability, a desirable trait in a used sports car. RepairPal, a trusted automotive resource, assigns a reliability rating of 3.5 out of 5.0 to the 2008 SLK 350, which is considered ‘Above Average’ within their scale. Edmunds user reviews paint a more positive picture, with an average score of 4.7 out of 5.0 across 41 reviews, suggesting a generally positive ownership experience in terms of reliability.
Consumer Reports data reveals a few recalls for the SLK 350, including issues related to the Electronic Stability Control (ESC), engine cooling system, exterior lighting, airbags, and a fuel pump sensor. While recalls should be noted, they are not necessarily indicative of widespread unreliability, as most manufacturers issue recalls for various reasons.
Mercedes-Benz SLC 350 vs. BMW Z4: A Close Rivalry
The 2009-2016 BMW Z4 (E89) stands as a direct competitor to the facelifted R171 Mercedes-Benz SLC, sharing similar premium build quality, German engineering, and eventually, a folding hardtop roof. Both roadsters exhibit comparable curb weights, with the Z4 being only marginally heavier. Both offer a six-speed manual transmission and cater to the grand touring segment of the roadster market. J.D. Power valuations indicate that both the 2008 SLC 350 and the 2009 BMW Z4 sDrive35i are currently valued at around $10,000 on average.
When new, the E89 Z4 and the SLC 350 were priced similarly, with the Z4 sDrive35i starting at approximately $51,650, just slightly more than the SLC 350. Performance figures are also closely matched. The manual Z4 sDrive35i, with its 302-horsepower turbocharged engine, achieves a 0-60 mph time of 5.2 seconds, virtually identical to the SLC 350.
Ultimately, the choice between the two often comes down to personal preference in driving dynamics and styling. The SLC’s naturally aspirated engine encourages higher revs for optimal performance, offering a different driving character compared to the turbocharged Z4. The SLC’s design, with its SLR McLaren-inspired front, contributes to a distinctive and timeless aesthetic. Combined with its attractive affordability and Mercedes-Benz’s reputation for quality, the SLC 350, now Mercedes-Benz SLC, presents a compelling case as a smart and stylish modern classic roadster.
