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2006 Mercedes-Benz SLK-Class Overview, Reviews, Ratings & Specs

Rating: 4.45
Based on 42 Owner Reviews
Jovan | March 31, 2025
The 2006 Mercedes-Benz SLK-Class is part of the second generation (R171) of this popular roadster, produced from 2004 to 2011. This two-door, two-seat convertible features a retractable hardtop, offering the open-air experience with the security of a coupe. Key trims include the SLK280, SLK350, and the high-performance SLK55 AMG. Original pricing ranged from around $43,000 to over $65,000. Its combination of German engineering, stylish design, and the innovative hardtop convertible system made it a popular choice.
The Good

The 2006 SLK-Class offers a blend of sporty performance and refined comfort. Emotionally, its sleek design and retractable hardtop provide a luxurious open-air experience. Practically, it boasts Mercedes-Benz engineering and a relatively fuel-efficient engine for its class. The SLK provides decent reliability, making it a solid value for drivers seeking a stylish and engaging roadster.

The Bad

Potential weaknesses of the 2006 SLK-Class include issues with the retractable hardtop mechanism, which can be expensive to repair. Electrical problems, particularly with sensors and the infotainment system, are also common concerns. Some owners have reported issues with the engine oil cooler. Regular maintenance and inspection of these areas are crucial.

2006 Mercedes-Benz SLK-Class: Quick Overview

  • Engine Options:
    • SLK280: 3.0L V6
    • SLK350: 3.5L V6
    • SLK55 AMG: 5.4L V8
  • Horsepower:
    • SLK280: 228 hp
    • SLK350: 268 hp
    • SLK55 AMG: 355 hp
  • Fuel Economy (MPG): (Estimates may vary based on driving conditions and transmission)
    • SLK280: 18 City / 25 Highway (estimated)
    • SLK350: 18 City / 25 Highway (estimated)
    • SLK55 AMG: 15 City / 21 Highway (estimated)
  • 0-60 Times:
    • SLK280: ~6.3 seconds
    • SLK350: ~5.4 seconds
    • SLK55 AMG: ~4.9 seconds
  • Towing Capacity: Not Applicable (This vehicle is not designed for towing.)
  • Trim-Level Features:
    • SLK280: Leather seats, automatic climate control, power windows and locks, cruise control, premium sound system, alloy wheels, retractable hardtop.
    • SLK350: Adds more powerful engine, upgraded brakes, sport-tuned suspension.
    • SLK55 AMG: High-performance engine and transmission, AMG-specific styling (body kit, wheels), sport seats, enhanced braking system, AMG performance instrumentation.

2006 Mercedes-Benz SLK-Class Specifications

Vehicle Information
Year 2006
Make Mercedes-Benz
Model SLK-Class
Trim -
Style -
Type Sedan
Category Sports Car
Manufacturing Details
Made In Germany
Manufacturing City BREMEN
Dimensions
Doors 2-Door
Curb Weight 3209 pounds
Gross Vehicle Weight Rating -
Overall Height -
Overall Length -
Overall Width -
Wheelbase Length -
Standard Seating -
Engine & Performance
Engine 268 High Power 3.5-L V-6
Engine Size 3.5L
Engine Cylinders 6
Transmission 7-Speed Automatic
Transmission Type Automatic
Transmission Speeds 7-Speed
Drivetrain Rear-Wheel Drive
Additional Features
Anti-Brake System -
Steering Type -
Pricing
Manufacturer Suggested Retail Price (MSRP) $46,950
Invoice Price $43,664
Delivery Charges $775

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Analysis

What Problems Does the 2006 Mercedes-Benz SLK-Class Have?

Frequently reported problems for the 2006 Mercedes-Benz SLK-Class often revolve around the retractable hardtop. The complex mechanism can experience failures, leading to costly repairs. These failures are commonly related to hydraulic leaks, sensor malfunctions, or issues with the motor. Electrical issues are also prevalent, including problems with the COMAND system (navigation and entertainment), sensors related to the stability control system (ESP), and issues with the power windows and locks. Some owners have reported oil leaks, particularly from the engine oil cooler, which can lead to significant problems if not addressed promptly.

While specific recalls for the 2006 model year may vary depending on the source, it's crucial to check the NHTSA (National Highway Traffic Safety Administration) website for any outstanding recalls related to safety. Long-term reliability concerns often center around the aforementioned hardtop and electrical issues. Preventative maintenance, particularly regarding fluid changes (hydraulic fluid for the top, engine oil, transmission fluid), and regular inspections are crucial to mitigating potential problems. Earlier model years in the R171 generation (2005-2006) are often cited as having slightly more electrical gremlins compared to later years, though this can depend heavily on individual vehicle maintenance.

How long will the 2006 Mercedes-Benz SLK-Class last?

With proper maintenance, a 2006 Mercedes-Benz SLK-Class can reasonably achieve 150,000 to 200,000 miles. Many owners report enjoying over 15 years of service. However, diligent maintenance is critical. Neglecting the complex systems, such as the retractable hardtop hydraulics and electrical components, can lead to premature failures. Long-term durability hinges on addressing issues promptly and adhering to the recommended service schedule. Weaknesses over time include potential corrosion in areas prone to road salt and wear and tear on interior components like leather seats and trim.
Positive Owner Reviews
Tommy Braga
So far so good. Great looking, responsive and exactly what I wanted, interior was almost perfect and the cabin amenities are great for an 06.
Jcacti
Handles like it’s on rails acceleration is very surprising for a v6 lots of compliments all around beautiful car!!! Very fun to drive!!! It’s sleek and sexy yet practical, the cruise control switch and cup holders were an after thought but not enough to deter anyone from wanting the car. Great all around car!!!!
Aliped
GREAT CAR VERY DEPENDABLE NEVER HAD ANY PROBLEMS GREAT GAS MILEAGE VERY COMFORTABLE AND GETS UP AND GOES VERY GOOD VALUE FOR PRICE AND I HIGHLY RECCOMMEND TO ANYONE
Negative Owner Reviews
Karengregoryk
Car is ok. Really not sure what car you?re talking about because I drove many this week so I really don?t know which one that you mean!

What Technology & Safety Features are Included?

The 2006 SLK-Class came with a range of standard and optional tech features. Standard entertainment included a premium sound system with a CD player. Optional upgrades included a navigation system integrated into the COMAND system, which controlled audio, navigation, and climate functions.

Driver-assistance features were relatively limited compared to modern vehicles, but standard features included anti-lock brakes (ABS), electronic stability program (ESP), and traction control. Optional features included Parktronic, a parking assist system.

Safety features included driver and passenger airbags, side airbags, and a roll bar system that automatically deployed in the event of a rollover. The 2006 SLK-Class earned good crash-test ratings from the IIHS (Insurance Institute for Highway Safety) for frontal offset and side impact protection. While the NHTSA (National Highway Traffic Safety Administration) may have specific ratings available, they should be checked directly on their website. Optional features contributing to safety included bi-xenon headlights with cornering lights for improved visibility. It's worth noting that while considered advanced for its time, the 2006 SLK-Class lacks many of the modern driver-assistance systems found in newer vehicles, such as blind-spot monitoring or lane departure warning.

What Colors Options are Available?

Exterior Colors
Black
Arctic White
Mars Red
Flint Grey Metallic
Iridium Silver Metallic
Pewter Metallic
Obsidian Black Metallic
Capri Blue Metallic
Graphite Grey
Interior Colors
Black Leather
Ash Leather
Flamenco Red Leather
Alpaca Grey Leather

2006 Mercedes-Benz SLK-Class Prices and Market Value

When new, the 2006 Mercedes-Benz SLK-Class ranged from approximately $43,000 for the SLK280 to over $65,000 for the SLK55 AMG. Currently, used market prices typically range from $7,000 to $15,000, depending on condition, mileage, and trim level. The SLK-Class has depreciated significantly due to its age and higher maintenance costs associated with luxury vehicles. Factors affecting resale value include the car's condition, service history (especially records showing maintenance of the hardtop), and the presence of desirable options. The AMG models generally hold their value better than the base models.

2006 Mercedes-Benz SLK-Class Cost of Ownership

The 2006 Mercedes-Benz SLK-Class is generally considered costly to own. Insurance premiums are higher than average due to its classification as a luxury sports car. Fuel costs are moderate, especially for the V6 models. However, maintenance and repair costs can be significant, particularly for the complex retractable hardtop and electrical systems. Long-term ownership requires a dedicated budget for potential repairs and preventative maintenance to avoid major issues. This is not an economical vehicle choice.

2006 Mercedes-Benz SLK-Class Fuel Efficiency

Fuel Type Gasoline (Required)
Fuel Capacity -
City Mileage 16 miles/gallon
Highway Mileage 23 miles/gallon

2006 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

2006 Mercedes-Benz SLK-Class Insurance

Insurance for a 2006 Mercedes-Benz SLK-Class is moderately priced, reflecting its status as a Sedan with strong safety ratings and
reasonable repair costs.

How Does the 2006 Mercedes-Benz SLK-Class Compare to Other Sedan?

The 2006 Mercedes-Benz SLK-Class competed with vehicles like the BMW Z4, Audi TT, and Porsche Boxster. In terms of performance, the SLK55 AMG offered comparable power to the Boxster S, while the Z4 provided a more raw and engaging driving experience. The Audi TT offered a more refined interior and all-wheel-drive option.

Regarding features, the SLK-Class stood out with its retractable hardtop, offering a unique blend of coupe and convertible functionality. Reliability is where the SLK-Class often falls short compared to some rivals, with the BMW Z4 generally considered more reliable and the Porsche Boxster offering superior build quality. Price-wise, the SLK-Class sat in a similar range as its competitors when new, but used prices reflect its higher depreciation and potentially higher maintenance costs.

Alternatives to the 2006 SLK-Class include the BMW Z4 (for a more driver-focused experience and potentially better reliability), the Porsche Boxster (for superior handling and build quality, albeit at a higher price point), and the Audi TT (for a more modern interior and available all-wheel drive). For buyers prioritizing reliability and lower running costs, the BMW Z4 might be a better choice. If performance is paramount, the Porsche Boxster offers a more rewarding driving experience, though at a higher cost.

Ranks #729 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 (5.0★)
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★)
729 2006 Mercedes-Benz SLK-Class (5.0★)

Final Verdict: Is the 2006 Mercedes-Benz SLK-Class a Good Sedan?

The 2006 Mercedes-Benz SLK-Class is ideal for buyers seeking a stylish and sophisticated roadster with the added security and comfort of a retractable hardtop. It's worth buying *used* if you find a well-maintained example with a comprehensive service history and are prepared for potentially higher maintenance costs. Specific trims, like the SLK350, offer a good balance of performance and value. The SLK55 AMG is for enthusiasts seeking a more potent driving experience, but comes with increased running costs. Before purchasing, a thorough inspection by a qualified mechanic is essential, especially concerning the hardtop mechanism and electrical systems. This car is best suited for someone who appreciates the Mercedes-Benz brand and is willing to invest in its upkeep.

2006 Mercedes-Benz SLK-Class Owner Reviews

4.45
Consumer Rating, Based on 42 Consumer Reviews
Overall rating
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Tommy Braga on May 14, 2020

Most fun I’ve had on four wheels

So far so good. Great looking, responsive and exactly what I wanted, interior was almost perfect and the cabin amenities are great for an 06.

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Cards Fan, Bourbon Man on February 4, 2020

Wife and son carnapped my 2006 SLK350

I was considering the Boxster S (concerns over the bearing lubrication) the S2000, and the M Roadster. All are fun cars to drive but the SLK felt more luxurious and had a retractable hardtop. The dash is a little dated and the radio is ok, but who cares? I bought it because it's a go cart on steroids and corners like a snake in a rat hole. It's a little tight (6'3" and I'm well into the 200

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Hokie on November 19, 2019

Comfortable little car admired by all my friends.

This car is a delight to drive. Very responsive and very admired by all my friends. High Performance but a little high pitched whirring sound annoys me when accelerating. It has sensitive road handling responsiveness so doesn’t ride softly like a sedan. Fantastic car!

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Wifes car on October 4, 2019

Wife loves it.

Easy car to drive. Wife loves her slk's this is her second. We had to pry her out of her old black compressor. She loved that car. She named it black beauty. When the 2006 showed up she was smitten. Nice thing is. You can buy these older sports cars for your wife. They are inexpensive. Safe and fun to drive. Have a trust worthy Mercedes dealer service her car. That way its not blaomed on you later😄

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Jcacti on May 23, 2019

Great example of German engineering superb!!!!

Handles like it’s on rails acceleration is very surprising for a v6 lots of compliments all around beautiful car!!! Very fun to drive!!! It’s sleek and sexy yet practical, the cruise control switch and cup holders were an after thought but not enough to deter anyone from wanting the car. Great all around car!!!!

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ScottK on January 27, 2019

Lots of fun and so comfy.

The hardtop convertible makes the car a real winner as an all season car, but the convertible is really what makes it fun. Great handling and performance. Really good comfort and it's a Mercedes, so great reliability.

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Aliped on January 23, 2019

Best Car I hae ever owned

GREAT CAR VERY DEPENDABLE NEVER HAD ANY PROBLEMS GREAT GAS MILEAGE VERY COMFORTABLE AND GETS UP AND GOES VERY GOOD VALUE FOR PRICE AND I HIGHLY RECCOMMEND TO ANYONE

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Old man on December 18, 2018

This is a toy for me. I have drove MB for years

AMG 55 loaded. The most fun I’ve had in years that was legal. I’m amazed it get 24 mph on the Hwy. at 80 mph

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RandyJ on July 7, 2018

Fun to drive

Acceleration is fantastic, handling is wonderful, a really fun to drive car. Haven't had any issues with reliability, great car. I would highly recommend to anyone.

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susieq on March 18, 2018

My 3rd Mercedes SLK love the car

After testing several new cars I keep going back to Mercedes SLK. Its the only car in price range that has a hardtop convertible. I love this car and I am getting a new one that is why its being sold.

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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.