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2005 Mercedes-Benz SLK-Class Overview, Reviews, Ratings & Specs

Rating: 4.77
Based on 30 Owner Reviews
Jovan | March 31, 2025
The 2005 Mercedes-Benz SLK-Class is a compact, two-door roadster with a retractable hardtop, offering open-air driving with coupe-like security. Part of the SLK's second generation (R171), this model year includes trims like the SLK280, SLK350, and the high-performance SLK55 AMG. New, it ranged from about $40,000 to $65,000 depending on trim. Its standout feature is the convenient and quick-folding hardtop, combined with Mercedes-Benz luxury and performance, which contributes to its enduring popularity.
The Good

The 2005 SLK-Class offers a blend of sporty performance and Mercedes-Benz comfort. Its retractable hardtop provides both open-air fun and coupe practicality, appealing to emotional buyers. Relatively reliable for a luxury car, it also provides a comfortable ride and respectable fuel efficiency, attracting more practical considerations. The car's sleek design also continues to draw appeal.

The Bad

Potential weaknesses in the 2005 SLK-Class include issues with the retractable hardtop mechanism, which can be prone to failure. Electrical problems, particularly with sensors and control modules, are also something to watch out for. Oil leaks, especially in higher-mileage examples, can be a concern. Suspension components might also need attention over time. Corrosion and rust, especially on older models, is a factor to consider.

2005 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 (Estimated):
    • SLK280: 18-20 mpg city / 25-28 mpg highway
    • SLK350: 17-19 mpg city / 24-27 mpg highway
    • SLK55 AMG: 14-16 mpg city / 21-23 mpg highway
  • 0-60 Times (Approximate):
    • SLK280: 6.3 seconds
    • SLK350: 5.5 seconds
    • SLK55 AMG: 4.9 seconds
  • Towing Capacity: Not applicable (This vehicle is not designed for towing)
  • Trim-Level Features:
    • SLK280: Standard features include leather upholstery, power seats, dual-zone climate control, and a premium audio system.
    • SLK350: Adds features like upgraded wheels, sport suspension, and enhanced interior trim.
    • SLK55 AMG: High-performance model featuring AMG-tuned suspension, brakes, and exhaust, as well as unique styling elements and sport seats. It also included more luxurious features standard.

2005 Mercedes-Benz SLK-Class Specifications

Vehicle Information
Year 2005
Make Mercedes-Benz
Model SLK-Class
Trim -
Style -
Type Sedan
Category Sports Car
Manufacturing Details
Made In Germany
Manufacturing City BRERNEN
Dimensions
Doors 2-Door
Curb Weight 3397 pounds
Gross Vehicle Weight Rating 3995 pounds
Overall Height -
Overall Length -
Overall Width -
Wheelbase Length -
Standard Seating 2
Engine & Performance
Engine 3.5-L V-6
Engine Size 3.5L
Engine Cylinders 6
Transmission Automatic
Transmission Type Automatic
Transmission Speeds -
Drivetrain Rear-Wheel Drive
Additional Features
Anti-Brake System -
Steering Type -
Pricing
Manufacturer Suggested Retail Price (MSRP) $60,500
Invoice Price $56,265
Delivery Charges $720

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Analysis

What Problems Does the 2005 Mercedes-Benz SLK-Class Have?

Frequently reported problems with the 2005 Mercedes-Benz SLK-Class often revolve around its complex systems. The retractable hardtop mechanism is a common source of trouble, with issues ranging from slow operation to complete failure. This can be expensive to repair. Electrical glitches are also frequently reported, affecting sensors, control modules, and the entertainment system. Owners have also noted issues with the car's climate control system, particularly with the AC compressor. Oil leaks are a potential long-term reliability concern, especially as the car ages. Check engine lights are common, often related to sensor malfunctions or emissions system issues. Regarding recalls, it's important to check the NHTSA website for any specific recalls related to the 2005 SLK-Class, as these can vary. Long-term reliability can be affected by these issues, as well as the general wear and tear of components. Corrosion, especially in areas prone to road salt, is a factor to consider. Regular maintenance and addressing issues promptly are crucial for extending the lifespan of this vehicle.

How long will the 2005 Mercedes-Benz SLK-Class last?

With proper maintenance, a 2005 Mercedes-Benz SLK-Class can potentially reach 150,000 to 200,000 miles or more. Many owners have kept their cars running well past 15 years. However, long-term durability is highly dependent on consistent maintenance. Neglecting issues like oil leaks, suspension wear, or electrical problems will significantly shorten its lifespan. Weaknesses that emerge over time include degradation of rubber components (seals, hoses, bushings), corrosion, and the increasing likelihood of failures in complex systems like the retractable hardtop. Regular servicing, timely repairs, and careful driving habits are key to maximizing the car's longevity.

What Technology & Safety Features are Included?

The 2005 Mercedes-Benz SLK-Class came equipped with a decent array of technology for its time. Standard features included a premium audio system with a CD player, dual-zone automatic climate control, and power-adjustable seats. Optional features included a navigation system (which now appears dated), a premium Harman Kardon sound system, and heated seats. Driver-assistance features were limited compared to modern cars, but included anti-lock brakes (ABS), electronic stability control (ESP), and traction control. Safety features included front and side airbags. Euro NCAP crash test ratings for the SLK-Class were generally good for occupant protection. However, remember that crash test standards evolve over time, so these ratings should be considered in the context of 2005 safety standards. Available options such as the telematics system, Tele-Aid, provided emergency assistance. The infotainment system was controlled using buttons and knobs; it predates the COMAND system found in later Mercedes models. While not cutting-edge by today's standards, the SLK offered a comfortable and reasonably safe driving experience for its era. Modernizing the audio system might be desired by current owners.

What Colors Options are Available?

Exterior Colors
Black
Flint Grey Metallic
Brilliant Silver Metallic
Mars Red
Jade Green Metallic
Opal White Metallic
Interior Colors
Graphite Grey
Ash
Berry Red
Black Leather
Quartz Leather
Ash Leather

2005 Mercedes-Benz SLK-Class Prices and Market Value

When new, the 2005 Mercedes-Benz SLK-Class ranged from approximately $40,000 for the SLK280 to around $65,000 for the SLK55 AMG. Current used market prices typically range from $5,000 to $15,000, depending on condition, mileage, and trim level. The SLK has experienced significant depreciation, as is typical for luxury vehicles. Factors affecting resale value include the car's overall condition, mileage, service history, and the desirability of specific trims (the SLK55 AMG generally commands a higher price). Cars with a clean title, low mileage, and a well-documented maintenance record will fetch the highest prices. The presence of desirable options and a lack of major mechanical issues also contribute to higher resale value.

2005 Mercedes-Benz SLK-Class Cost of Ownership

Owning a 2005 Mercedes-Benz SLK-Class can be moderately costly. Insurance rates will likely be higher than average due to its luxury status. Fuel costs depend on the engine, but expect premium fuel and moderate consumption. Maintenance and repairs can be expensive, especially for specialized components like the retractable hardtop and electrical systems. Long-term ownership costs can be significant, given the age of the vehicle and potential for unexpected repairs. It is generally not considered an economical vehicle to own, especially compared to non-luxury alternatives.

2005 Mercedes-Benz SLK-Class Fuel Efficiency

Fuel Type Gasoline (Required)
Fuel Capacity -
City Mileage 14 miles/gallon
Highway Mileage 20 miles/gallon

2005 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

2005 Mercedes-Benz SLK-Class Insurance

Insurance for a 2005 Mercedes-Benz SLK-Class is moderately priced, reflecting its status as a Sedan with strong safety ratings and
reasonable repair costs.

How Does the 2005 Mercedes-Benz SLK-Class Compare to Other Sedan?

The 2005 Mercedes-Benz SLK-Class competed with cars like the BMW Z4, Audi TT, and Porsche Boxster. In terms of performance, the SLK350 offered a good balance, while the SLK55 AMG provided serious muscle, rivaling the Boxster S. The Z4 offered similar performance and driving dynamics, while the TT emphasized style and technology. Feature-wise, the SLK was generally well-equipped, but the Z4 offered a slightly more driver-focused experience. Reliability-wise, the SLK is comparable to its German rivals, but all require diligent maintenance. The Porsche Boxster tends to be considered more reliable by some owners but can have higher repair costs. Price-wise, the SLK generally held its own against its competitors. As used cars, a well-maintained Boxster is a good alternative for drivers prioritizing handling and performance, while a Z4 offers a similar sporty experience. The Audi TT is an option for buyers valuing distinctive styling, however, the SLK offers the retractable hardtop which is a significant advantage in terms of security and all-weather usability, something the Boxster doesn't have and the Z4 only offered as an optional coupe.

Ranks #739 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★)
739 2005 Mercedes-Benz SLK-Class (5.0★)

Final Verdict: Is the 2005 Mercedes-Benz SLK-Class a Good Sedan?

The 2005 Mercedes-Benz SLK-Class is ideal for someone seeking a stylish and fun-to-drive roadster with the added convenience of a retractable hardtop. It's a good choice for those who appreciate Mercedes-Benz luxury and are willing to accept potentially higher maintenance costs. Whether it's worth buying depends on its condition and price. A well-maintained example with a comprehensive service history is a better bet. The SLK350 offers a good balance of performance and features. Buying a used SLK is the only option at this point, and a thorough inspection by a qualified mechanic is essential before purchase. It’s best suited for those who prioritize style, comfort and top-down driving at a relatively affordable price point.

2005 Mercedes-Benz SLK-Class Owner Reviews

4.77
Consumer Rating, Based on 30 Consumer Reviews
Overall rating
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Kevin Mills on February 8, 2023

SLK 350 - Do not hesitate to buy one

My 2005 SLK 350 has 250,000 km and it runs very well and the body is clean (no rust). There is a small oil leak but that is to be expected for a car with this milage. Overall, I love this car.

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Benz350SLK on May 20, 2021

Just great all round

The car itself is minimalistic except where it counts. Fast stylish and so much fun it aught to be illegal. It has everything a sports car needs without the fluffy extras. It doesnt need an ugly spoiler or GT stripes. When you floor the gas you will understand that this baby Mercedes isnt a baby at all. Its not for the fainthearted. Its a sports roadster with a pedigree miles long and lives up to its heritage. Yes there are faster cars. Then again beauty is in the eye of the person owning the keys to its 3 pointed star F1 style nose

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Causes4Cure on September 7, 2020

Second one owned!

I sold my 2002 SLK320 to a girlfriend AND she's still my friend! The 2005 replacement is as trustworthy and reliable as the first. The convertible Hardtop Power Retractable feature provides safety and security. Has run AAAAA+ since purchased.

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Auto Fan on March 23, 2020

Very good quality car, reliable & fun to drive!

This car is a real "GEM"! Formula 1 style racing design. Very comfortable and great on the road. Unique hardtop convertible! Excellent condition, garage kept and very low miles.

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Yeagermister on June 7, 2019

WELL BUILT CAR

GREAT CAR!!!!!!!!! FROM TOP! TO BOTTOM! DRIVE GOOD HANDLES GREAT AND RIDING WITH TOP DOWN LIBERATING AS LONG YOU MAINTAIN NORMAL MAINTENANCE ON THIS VEHICLE FOR ME ITS TREATED ME VERY WELL NO MAJOR ISSUES....

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EOS girl on February 22, 2019

Best car

I had my 05, SLK 350 for 3 years and loved it. Drove and handle wonderfully. It would stop on a dime and turn on a dime. Fast with get up and go. Very comfortable and when the top was down I was in heaven! Sound system was a Bose system. Nothing bad to say about this car what so ever, but maybe the cost to maintain it, was a little pricey.

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5th and best Mercedes so far! on November 20, 2018

112K miles with no major problems

Great car! Super gas mileage with the 6 speed manual transmission. Still a very tight feeling and driving car. I have always had my maintenance done with certified mechanics. Other than having typical oil and filter changes, brake pad changes, the car has not needed anything major nor has anything broke or needed replacement. What I did have to replace was the trim on the left and right side of the rear window due to the paint fading. Also, the right rear tire takes the torque and it needs replacing faster than the other tires. Typical Driver's seat wear on the edge near the door. The Navigation system is not very good and the factory stereo could be better. Overall, the car has not been costly to have and maintain.

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slkwow on October 10, 2018

A Rare Gem

#1 value retractable hardtop. Original MSRP with all features/options was $50k! You can't beat it for the price. It is a secret gem. I've had several people think it's brand new and are stunned when I tell them it's a 2005. The vehicle has not lost value, in fact, it seems to have gone up since I bought it. You must get the all of the options and features including Harmon K surround sound system, Airscarf neck warmer, custom leather Designo trim, premium wheels. It is comfortable to drive too with the electronic seats with memory. I forecast this car will increase in value over time as a collector item.

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in mississippi on September 21, 2018

i love it !

although this car is 18 years old, i haven't found any more recent car that i would rather have had purchased . . . am very satisfied with my purchase

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Jeffrey on September 21, 2018

This little sports car was a gift to myself.

Hard to find a better sports car for the price of a used Miata. Hardtop convertible a much better choice for me than a ragtop. Top up..sport coupe, top down terrific.

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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.