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2008 Mercedes-Benz SLK-Class Overview, Reviews, Ratings & Specs

Rating: 4.69
Based on 18 Owner Reviews â–¶
Jovan | March 31, 2025
The 2008 Mercedes-Benz SLK-Class, a compact roadster, boasts a retractable hardtop, offering open-air thrills and coupe-like comfort. Produced from 1996 onward, the SLK-Class is known for its sporty handling and luxurious features. Key trims for the 2008 model year include the SLK280, SLK350, and the high-performance SLK55 AMG. Pricing in 2008 ranged approximately from $45,000 to over $70,000 for the AMG version. Its blend of style, performance, and the convenience of a folding hardtop contribute to its popularity.
The Good

The 2008 Mercedes-Benz SLK-Class delivers a blend of emotional and practical appeal. Its strong performance, particularly in the AMG variant, offers exhilarating driving experiences. Comfort features, like supportive seats and a well-insulated cabin, enhance long journeys. The retractable hardtop provides coupe-like security and weather protection. While not the most fuel-efficient, its distinctive design and Mercedes-Benz prestige offer considerable value for certain buyers.

The Bad

Potential weaknesses of the 2008 Mercedes-Benz SLK-Class include potential issues with the retractable hardtop mechanism, which can be costly to repair. Electrical problems, common in many luxury cars, can also arise. Suspension components and oil leaks should be inspected. Some owners have reported issues with the Sensotronic braking system (though less prevalent in this year than earlier). Regular maintenance is critical to avoid significant expenses.

2008 Mercedes-Benz SLK-Class: Quick Overview

  • Engine Options:
    • SLK280: 3.0L V6
    • SLK350: 3.5L V6
    • SLK55 AMG: 5.5L V8
  • Horsepower:
    • SLK280: 228 hp
    • SLK350: 300 hp
    • SLK55 AMG: 355 hp
  • Fuel Economy (MPG):
    • SLK280: 18 city / 25 highway (estimated)
    • SLK350: 17 city / 24 highway (estimated)
    • SLK55 AMG: 14 city / 20 highway (estimated)
  • 0-60 Times:
    • SLK280: Around 6.3 seconds
    • SLK350: Around 5.4 seconds
    • SLK55 AMG: Around 4.9 seconds
  • Towing Capacity: Not Applicable (This vehicle is not designed for towing)
  • Trim-Level Features:
    • SLK280: Leather seats, power windows and locks, automatic climate control, premium audio system, alloy wheels, retractable hardtop.
    • SLK350: All SLK280 features, plus more powerful engine, upgraded brakes, sport suspension (optional), available premium packages.
    • SLK55 AMG: All SLK350 features (where applicable), plus AMG-tuned engine, suspension, brakes, and styling, sport seats, unique interior trim.

2008 Mercedes-Benz SLK-Class Specifications

Vehicle Information
Year 2008
Make Mercedes-Benz
Model SLK-Class
Trim -
Style -
Type Convertible
Category Sports Car
Manufacturing Details
Made In Germany
Manufacturing City BREMEN
Dimensions
Doors 2-Door
Curb Weight 3255 pounds
Gross Vehicle Weight Rating -
Overall Height 51.00 inches
Overall Length 160.70 inches
Overall Width 70.40 inches
Wheelbase Length 95.70 inches
Standard Seating 2
Engine & Performance
Engine 3.0-L V-6 DOHC 24V
Engine Size 3L
Engine Cylinders 6
Transmission 7-Speed Automatic
Transmission Type Automatic
Transmission Speeds 7-Speed
Drivetrain Rear-Wheel Drive
Additional Features
Anti-Brake System 4-Wheel ABS
Steering Type Rack & Pinion
Pricing
Manufacturer Suggested Retail Price (MSRP) $44,150
Invoice Price $41,060
Delivery Charges $825

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What Problems Does the 2008 Mercedes-Benz SLK-Class Have?

Frequently reported problems for the 2008 Mercedes-Benz SLK-Class often revolve around the retractable hardtop mechanism. Issues can range from slow operation to complete failure, and repairs can be expensive due to the complexity of the system. Electrical problems, such as malfunctioning sensors, can also occur. Oil leaks, particularly from the valve cover gaskets, are another potential concern. Suspension components, including bushings and ball joints, may wear out over time, leading to a less comfortable ride and compromised handling. While the 2008 model is generally considered more reliable than earlier SLK generations, it's not immune to these issues.

Check for any open recalls on the NHTSA website using the VIN. Specific model year concerns might include issues with the fuel pump relay which could cause the car to stall. Long-term reliability hinges on consistent maintenance. Neglecting regular servicing can exacerbate existing problems and lead to costly repairs down the line. The Sensotronic Brake Control system, present in some earlier models, was mostly phased out by 2008 but should still be checked for proper function if equipped, although this is less of a concern for this model year. Proper pre-purchase inspection by a qualified mechanic is highly recommended.

How long will the 2008 Mercedes-Benz SLK-Class last?

A 2008 Mercedes-Benz SLK-Class, with diligent maintenance, could reasonably reach 150,000 to 200,000 miles or more. However, reaching those milestones depends significantly on consistent servicing and responsible driving habits. Key to long-term durability is addressing potential issues early. Weaknesses that can emerge over time include wear and tear on suspension components, potential rust in areas prone to moisture, and the aforementioned concerns regarding the retractable hardtop's hydraulic system and electrical components. Regular fluid changes, timely replacement of wear items, and addressing any warning lights promptly will contribute to a longer lifespan.
Positive Owner Reviews
Melvis
This car is surprisingly good on gas and gives a sporty but smooth ride in style. There is no better way to get around in Florida. Put the top down and forget your going to work.
Filip54
Great car, very comfortable for a sports car and with plenty of power when you need it! Retractable convertible hard top is smooth, fast and super convenient for the warm weather.
A Rare Oppotunity
I love this car, but I'm just not home to drive it. I don't have to sell, but would like to see it go to a good home. This is your chance to buy a car as good as new for half the price.
Negative Owner Reviews
grandy
very unhappy.. 2008 with 30,000 miles.. squeaks, noises been back 4 times, had one before that I loved

What Technology & Safety Features are Included?

The 2008 Mercedes-Benz SLK-Class features a COMAND system for infotainment, including a navigation system (optional). Standard entertainment features include a premium sound system with a CD player and auxiliary input. Bluetooth connectivity was available, either standard or as an option depending on the trim and package. Driver-assistance features are relatively limited compared to modern cars, but include cruise control and rain-sensing wipers.

Safety features are more comprehensive, with standard features including anti-lock brakes (ABS), electronic stability control (ESP), traction control, and multiple airbags (front and side). Optional features included bi-xenon headlamps with active curve illumination for improved visibility. Crash-test ratings from the IIHS and NHTSA should be consulted for specific safety performance data, although ratings for this particular model year may be limited. Be sure to check official sources for the most accurate information. The SLK-Class typically performed well in safety tests for its era, reflecting Mercedes-Benz's commitment to occupant protection. The TeleAid emergency calling system was also available, providing assistance in the event of an accident or breakdown. The presence and functionality of TeleAid should be verified, as it may require a subscription.

What Colors Options are Available?

Exterior Colors
Black
Arctic White
Flint Grey Metallic
Iridium Silver Metallic
Mars Red
Palladium Silver Metallic
Capri Blue Metallic
Interior Colors
Black Leather
Almond Beige Leather
Ash Leather
Black Nappa Leather
Almond Beige Nappa Leather
Ash Nappa Leather

2008 Mercedes-Benz SLK-Class Prices and Market Value

The 2008 Mercedes-Benz SLK-Class had a new price ranging from approximately $45,000 to over $70,000, depending on the trim and options. Current used market prices vary widely, from around $8,000 to $20,000 or more, depending on mileage, condition, and trim level. The SLK-Class has experienced significant depreciation, as is typical for luxury vehicles. Factors affecting resale value include the overall condition, maintenance history, mileage, and the presence of desirable options like the AMG package. Low-mileage examples in excellent condition command a premium, while those with neglected maintenance or high mileage sell for considerably less. The retractable hardtop's functionality is also a major factor influencing resale value.

2008 Mercedes-Benz SLK-Class Cost of Ownership

Owning a 2008 Mercedes-Benz SLK-Class can be moderately costly. Insurance premiums are typically higher than average due to the car's luxury status and performance capabilities. Fuel economy is decent but not exceptional. Maintenance, especially at a Mercedes-Benz dealership, can be expensive. Repairs, particularly those involving the retractable hardtop or electrical systems, can also strain the budget. While not the most economical choice, careful maintenance and proactive repairs can mitigate some of the higher ownership costs.

2008 Mercedes-Benz SLK-Class Fuel Efficiency

Fuel Type Gasoline (Required)
Fuel Capacity 18.50 gallons
City Mileage 17 miles/gallon
Highway Mileage 24 miles/gallon

2008 Mercedes-Benz SLK-Class Safety Rating

NHTSA
Side Driver Rating
Frontal Passenger Rating
Rollover Rating
Side Rear Passenger Rating
Frontal Driver Rating
IIHS
Rear Crash Protection/Head Restraint Ratings Not Tested
Moderate Overlap Front Test Results Not Tested
Side Impact Test Results Not Tested

2008 Mercedes-Benz SLK-Class Warranty

Basic
Original warranty 48 months / 50,000 miles
Estimated remaining Expired
Powertrain
Original warranty 48 months / 50,000 miles
Estimated remaining Expired
Rust
Original warranty 48 months / 50,000 miles
Estimated remaining Expired

2008 Mercedes-Benz SLK-Class Insurance

Insurance for a 2008 Mercedes-Benz SLK-Class is moderately priced, reflecting its status as a Convertible with strong safety ratings and
reasonable repair costs.

How Does the 2008 Mercedes-Benz SLK-Class Compare to Other Convertible?

The 2008 Mercedes-Benz SLK-Class competed against rivals like the BMW Z4, Audi TT Roadster, and Porsche Boxster. In terms of performance, the SLK55 AMG offered a compelling V8 experience, rivaling the Boxster S, while the Z4 provided sharper handling. Feature-wise, the SLK offered a retractable hardtop, a unique selling point compared to the Z4's soft top and the TT's available coupe version. Reliability is a mixed bag; the Boxster and Z4 are often considered slightly more reliable, although all require careful maintenance.

Price-wise, the SLK was competitive within the segment. Potential alternatives include the Nissan 350Z Roadster for a more affordable, raw sports car experience, or a newer Mazda MX-5 Miata for a more reliable and fuel-efficient (though less luxurious) option. If reliability is a top priority, the Porsche Boxster, with thorough pre-purchase inspection, could be a better choice. The BMW Z4 offers a sportier driving experience, but also potentially higher maintenance costs.

Ranks #706 Sedan

1 2023 Toyota Camry (5.0★)
2 2023 Honda Accord (0.0★)
3 2023 Lexus ES (0.0★)
4 2024 Subaru Legacy (5.0★)
5 2022 Mazda MX-30 (4.0★)
6 2024 BMW M3 (0.0★)
7 2023 Ford Mustang (5.0★)
8 2023 Mercedes-Benz AMG GT (0.0★)
9 2023 Audi A3 (0.0★)
10 2023 Chevrolet Camaro (5.0★)
11 2023 Hyundai Elantra Hybrid (0.0★)
12 2023 Nissan Altima (4.0★)
706 2008 Mercedes-Benz SLK-Class (5.0★)

Final Verdict: Is the 2008 Mercedes-Benz SLK-Class a Good Convertible?

The 2008 Mercedes-Benz SLK-Class is ideal for individuals seeking a stylish and sporty roadster with the added convenience of a retractable hardtop. It's worth buying as a used vehicle if you appreciate the Mercedes-Benz brand and are prepared for potentially higher maintenance costs. The SLK350 offers a good balance of performance and features, while the SLK55 AMG is for those prioritizing raw power. A thorough pre-purchase inspection by a qualified mechanic is crucial to assess the condition of the retractable hardtop, electrical systems, and other potential problem areas. Buy only if the car has a documented maintenance history.

2008 Mercedes-Benz SLK-Class Owner Reviews

4.69
Consumer Rating, Based on 18 Consumer Reviews
Overall rating
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Melvis on February 11, 2020

Sporty, chic, and reliable

This car is surprisingly good on gas and gives a sporty but smooth ride in style. There is no better way to get around in Florida. Put the top down and forget your going to work.

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Chad on August 10, 2018

Very cool car to drive

It is a classy and peppy sport coup. I find, despite its size, there is a lot of headroom. The sound system is not good though and if you want to update it to an aftermarket system good luck: requires a complete rewire.

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Filip54 on April 2, 2018

Fantastic roadster

Great car, very comfortable for a sports car and with plenty of power when you need it! Retractable convertible hard top is smooth, fast and super convenient for the warm weather.

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A Rare Oppotunity on February 26, 2018

Good as new for half the price!

I love this car, but I'm just not home to drive it. I don't have to sell, but would like to see it go to a good home. This is your chance to buy a car as good as new for half the price.

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Retired Steve on October 13, 2017

Very fun car to drive

Previously I owned an SL550. When it was totaled out because of an electrical fire in the trunk I decided to look at the SLK model. while it is not the car that my SL was, my SLK 280 serves my needs quite well. It is my fun car. I use it for weekend road trips and just joy rides when the weather is nice. It has a lot of scat and sounds cool when you tromp it. I love the looks of the car and often get complements when I drive it. I am very satisfied with my choice to buy my 2008 SLK 280.

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Lootas on September 18, 2017

Not for a large family

Would keep this car forever if I had a place to keep it. It has features found on no other car. For instance, there is a pump to circulate coolant through the heater so you can sit in comfort in 30 degree weather with the motor off for about 40 minutes and not have to run the engine. In addition to heated seats, it blows almost instant warm air on the back of your neck from the headrest. This is a cold weather dream. Hard top is just the push of a lever and the car goes and the up and down in 20 seconds. Only thing lacking is a huge trunk (which would look stupid, of course, on a neat little sports car). Easy to park, easy to drive. Have had it for years. Hating to give it up but planning to go for one vehicle instead of two so we need a little SUV.

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Lootas on September 18, 2017

Don't take it to Costco

Love the car. One of our fave things is the heater will heat the car for about 40 minutes while sitting in a line waiting for a ferry without starting the engine. (a no-no in ferry lines.)

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grandy on June 17, 2017

owned other slk which I loved..not this one

very unhappy.. 2008 with 30,000 miles.. squeaks, noises been back 4 times, had one before that I loved

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Retired teacher on June 10, 2017

I LOVE IT!

I love it so much that I want another one! Did I say I want another one? Yes, I did !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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SLK_Manual on May 27, 2017

Hardtop with Manual Transmission is the Best

The hardtop convertible is the way to go when living in Oregon. In just a few seconds the top is up or down. Mercedes manual transmission is smooth and much better than the unintelligent automatic. Also the manual transmission can be easy changed at home in an hour for $20, unlike the automatic that must be taken into the dealer for a $500 flush.

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Jovan

Jovan specializes in interpreting vehicle records and making sense of VIN data. With over 10 years of experience in the automotive data industry, his work ensures that every report is clear, accurate, and useful for car buyers.