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2015 Mercedes-Benz SLK-Class Overview, Reviews, Ratings & Specs

Rating: 4.70
Based on 14 Owner Reviews ▶
Jovan | March 31, 2025
The 2015 Mercedes-Benz SLK-Class is a luxury roadster that offers open-air driving enjoyment with a retractable hardtop. Part of the SLK's third generation (R172), which spanned from 2011 to 2016, it's known for its blend of sporty performance and Mercedes-Benz refinement. Key trims include the SLK250, SLK350, and SLK55 AMG. When new, prices ranged roughly from $43,000 to over $70,000 for the AMG model. Its standout features are the retractable hardtop, luxurious interior, and available Airscarf neck-warming system.
The Good

The 2015 SLK-Class offers a compelling blend of performance and luxury. Emotionally, its sleek design and open-top driving experience are appealing. Practically, it provides a comfortable ride, decent fuel efficiency (especially in the SLK250), and the prestige of the Mercedes-Benz brand. The retractable hardtop provides year-round usability, enhancing its value.

The Bad

Potential weaknesses of the 2015 SLK-Class include potentially high maintenance costs associated with German luxury vehicles. Some owners have reported issues with the retractable hardtop mechanism. The rear seats are virtually nonexistent, so passenger space is limited. Also, the base SLK250, while fuel-efficient, might feel underpowered for some drivers.

2015 Mercedes-Benz SLK-Class: Quick Overview

  • Engine Options:
    • SLK250: 1.8L Turbocharged Inline-4
    • SLK350: 3.5L V6
    • SLK55 AMG: 5.5L V8
  • Horsepower:
    • SLK250: 201 hp
    • SLK350: 302 hp
    • SLK55 AMG: 415 hp
  • Fuel Economy (EPA est.):
    • SLK250: 22 mpg city / 33 mpg highway
    • SLK350: 20 mpg city / 29 mpg highway
    • SLK55 AMG: 19 mpg city / 28 mpg highway
  • 0-60 Times:
    • SLK250: ~6.5 seconds
    • SLK350: ~5.4 seconds
    • SLK55 AMG: ~4.5 seconds
  • Towing Capacity: Not applicable (roadster)
  • Trim-Level Features:
    • SLK250: MB-Tex upholstery, power-adjustable seats, Bluetooth, USB port, HD Radio, mbrace telematics, retractable hardtop, 17-inch alloy wheels.
    • SLK350: Adds leather upholstery, heated seats, dual-zone automatic climate control, and an upgraded audio system.
    • SLK55 AMG: Features a more powerful V8 engine, AMG-specific styling, upgraded brakes and suspension, performance exhaust, and unique interior trim. Optional features across the trims include: Premium Package (Airscarf, heated seats, upgraded audio), Multimedia Package (navigation, rearview camera), Driver Assistance Package (blind spot monitoring, lane keeping assist), and various appearance packages.

2015 Mercedes-Benz SLK-Class Specifications

Vehicle Information
Year 2015
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 3583 pounds
Gross Vehicle Weight Rating -
Overall Height -
Overall Length -
Overall Width -
Wheelbase Length -
Standard Seating -
Engine & Performance
Engine 5.5 8
Engine Size 5.5L
Engine Cylinders 8
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) $70,850
Invoice Price $65,891
Delivery Charges $925

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What Problems Does the 2015 Mercedes-Benz SLK-Class Have?

Frequently reported problems for the 2015 Mercedes-Benz SLK-Class are relatively limited compared to some other vehicles, but they exist. Some owners have reported issues with the retractable hardtop mechanism, including problems with the hydraulics or sensors that control its operation. These issues can be expensive to repair. Other reported problems involve electrical glitches, such as issues with the infotainment system or sensor malfunctions. Oil leaks, particularly around the valve cover gasket, are also a potential concern.

Regarding recalls, it's crucial to check the NHTSA (National Highway Traffic Safety Administration) website for any outstanding recalls related to the 2015 SLK-Class, as recalls can address safety-related issues that may arise.

Long-term reliability concerns generally revolve around the typical issues associated with German luxury cars: higher maintenance costs and potentially more frequent repairs compared to non-luxury brands. Regular maintenance, including oil changes and fluid checks, is essential to prolong the lifespan of the vehicle and minimize potential problems. Pre-purchase inspection by a qualified mechanic is highly recommended.

How long will the 2015 Mercedes-Benz SLK-Class last?

With proper maintenance, a 2015 Mercedes-Benz SLK-Class can easily provide 150,000 miles or more of service. Many owners report enjoying their SLKs for 10+ years. However, longevity is heavily dependent on maintenance habits. Regular oil changes, fluid flushes, and timely repairs are crucial. Weaknesses over time may include deterioration of rubber components (seals, hoses), wear on suspension components, and potential issues with the electrical system and retractable hardtop. Neglecting maintenance will significantly shorten the vehicle's lifespan.

What Technology & Safety Features are Included?

The 2015 Mercedes-Benz SLK-Class comes equipped with a decent array of technology and safety features. Standard features include a 5.8-inch display screen, Bluetooth connectivity, a USB port, and HD Radio. Optional upgrades include a navigation system, a rearview camera, and a Harman Kardon Logic7 surround-sound audio system.

Driver-assistance features, often optional, include blind-spot monitoring and lane-keeping assist. These features enhance safety by alerting the driver to potential hazards.

Safety features include standard stability control, traction control, anti-lock brakes, and multiple airbags. One unique feature is the available Airscarf system, which blows warm air onto the necks of occupants when the top is down, enhancing comfort in cooler weather.

Crash test ratings from the NHTSA and IIHS (Insurance Institute for Highway Safety) should be checked for the 2015 model year, as ratings can vary. Generally, Mercedes-Benz vehicles are known for their strong safety performance, but specific ratings provide valuable insights.

What Colors Options are Available?

Exterior Colors
Black
Polar White
Mars Red
Diamond White Metallic
Iridium Silver Metallic
Palladium Silver Metallic
Cuprite Brown Metallic
Lunar Blue Metallic
Obsidian Black Metallic
designo Citrine Brown Metallic
Interior Colors
Black Leather
Almond Beige Leather
Ash Grey Leather
designo Black/Titanium Grey Pearl Leather
designo Sand Leather

2015 Mercedes-Benz SLK-Class Prices and Market Value

When new, the 2015 Mercedes-Benz SLK-Class ranged from approximately $43,000 for the SLK250 to over $70,000 for the SLK55 AMG. As a used vehicle, prices vary significantly based on mileage, condition, and trim level. Expect to find them ranging from around $15,000 to $30,000. The SLK-Class has depreciated considerably due to age and mileage. Factors affecting resale value include condition, maintenance history, trim level (AMG models hold their value better), and optional features. Low mileage and a clean Carfax report will command a premium.

2015 Mercedes-Benz SLK-Class Cost of Ownership

The 2015 Mercedes-Benz SLK-Class is generally considered costly to own. Insurance premiums are higher than average due to the vehicle's luxury status and potential repair costs. While the SLK250 offers reasonable fuel economy, the SLK350 and SLK55 AMG are less efficient. Maintenance and repair costs can be significant, particularly for specialized parts and labor. Long-term ownership requires diligent maintenance to avoid expensive repairs, making it a less economical choice overall.

2015 Mercedes-Benz SLK-Class Fuel Efficiency

Fuel Type Gasoline (Required)
Fuel Capacity 18.5 gallons
City Mileage 19 miles/gallon
Highway Mileage 28 miles/gallon

2015 Mercedes-Benz SLK-Class Safety Rating

IIHS
Roof Strength Test Results Not Tested
Rear Crash Protection/Head Restraint Ratings Not Tested
Small Overlap Front Test Results Not Tested
Moderate Overlap Front Test Results Not Tested
Side Impact Test Results Not Tested

2015 Mercedes-Benz SLK-Class Warranty

Rust
Original warranty 48 months / 50000 miles
Estimated remaining Expired
Drivetrain
Original warranty 48 months / 50000 miles
Estimated remaining Expired
Basic
Original warranty 48 months / 50000 miles
Estimated remaining Expired
Roadside
Original warranty 0 months / unlimited miles
Estimated remaining Expired
Free Maintenance
Original warranty 0 months / 3000 miles
Estimated remaining Expired

2015 Mercedes-Benz SLK-Class Insurance

Insurance for a 2015 Mercedes-Benz SLK-Class is moderately priced, reflecting its status as a Sedan with strong safety ratings and
reasonable repair costs.

How Does the 2015 Mercedes-Benz SLK-Class Compare to Other Sedan?

The 2015 Mercedes-Benz SLK-Class competes with other luxury roadsters like the BMW Z4, Audi TT Roadster, and Porsche Boxster. In terms of performance, the SLK55 AMG offers comparable power to the Boxster S but lacks the Porsche's sharper handling. The BMW Z4 provides a similar driving experience with a slightly more modern interior. The Audi TT Roadster boasts a stylish design and impressive technology.

Reliability-wise, the SLK-Class can be more expensive to maintain than the Z4 or TT. The Boxster generally holds its value better and is considered more reliable long-term.

Price-wise, used SLKs are often more affordable than comparable Boxsters.

Alternatives: If performance is the top priority, the Porsche Boxster is a better choice. For a balance of performance, comfort, and value, the BMW Z4 is a strong contender. The Audi TT Roadster is appealing for its design and tech features. Consider the Mazda MX-5 Miata for a more affordable and reliable, albeit less luxurious, open-top experience.

Ranks #615 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★)
615 2015 Mercedes-Benz SLK-Class (4.0★)

Final Verdict: Is the 2015 Mercedes-Benz SLK-Class a Good Sedan?

The 2015 Mercedes-Benz SLK-Class is ideal for buyers seeking a luxurious and stylish roadster with a retractable hardtop for year-round enjoyment. It's worth buying if you prioritize comfort, brand prestige, and the open-air driving experience. A used model offers significant value compared to buying new. The SLK350 provides a good balance of performance and features, while the SLK55 AMG is for those seeking serious power. Ensure a thorough pre-purchase inspection by a qualified mechanic, focusing on the retractable hardtop and potential oil leaks. Budget for higher-than-average maintenance costs.

2015 Mercedes-Benz SLK-Class Owner Reviews

4.70
Consumer Rating, Based on 14 Consumer Reviews
Overall rating
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Queen Mum on August 11, 2020

My 4th Mercedes and at 75 I feel fantastic wind bl

All is good but is low to the ground so watch out for pot holes hard top convertible feature I love!!easy to park and I get so many compliments

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Medicine Man on July 23, 2019

Low Price Low Miles SLK 250 -- 25k OBO

I absolutely love this vehicle. It's not suitable for long trips because it's a 2 seater but other than that it is amazing and fun to drive. Hard top down - letting the Cali wind blow.

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JohnBoy on January 17, 2019

Best car that we have ever owned.

This car has met and exceeded out expectations. Thank you Perry at Longs of Chattanooga for your friendship. We are anticipating a long relationship for the future.

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Erika on November 2, 2018

Crazy, Sexy, Cool!

Ultra responsive, sticks to the road! Most fun vehicle I have ever driven! The leather interior is super high quality. Feel like a million bucks in this baby!

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Tennisguy on May 28, 2018

Well done touring two seter from Mercedes

The SLK is what you would expect from Mercedes it is not a competitor for the Porsche Boxster but rather an alternative... This is not track / race car it is a sophisticated touring roadster. The low end torque is weak but by downshifting with the transmission paddles this can be overcome.. The interior is well appointed and the command center controls are easily mastered... easy to drive, great lines, and very economical... comes down to what you want from your automobile... gentile driving..SLK ... race performance Boxster

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SilverSurfer on April 16, 2018

Best acceleration ...

Great acceleration, best audio system, remote hard top convertible, nice styling, very reliable Great beach cruiser Great acceleration, best audio system, remote hard top convertible, nice styling, very reliable Great beach cruiser Great acceleration, best audio system, remote hard top convertible, nice styling, very reliable Great beach cruiser

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250slk driver on April 15, 2018

Great vehicle

It's a fun vehicle with a smooth ride, and well built. Only drawbacks are sluggish response from the four cylinder engine and road noise when traveling above 60 mph.

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Neil on February 14, 2018

The most classy car I have ever owned

I am so excited to own a Mecedes Benz! It is an aesthetically beautiful car, with just enough sportyness to make it a joy to drive. However, in the economy mode (which is the default mode) it lacks power because of the slow shifting. The sport mode eliminates this problem, but it has to be activated every time the car is started. You also take a pretty substantial hit in fuel economy (~20%) in the sport mode. The tech features are great, not overly done like some cars. I do wish it had blind-spot assist and a backup camera. The Harman Kardon sound system ROCKS! Overall I am very pleased with the car.

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JanieW on October 22, 2017

Luv my new toy!!

Lots of fun to drive! It?s my new woman cave!! Drove to the beach with the top down and the heat blasting. Striking in red with chrome accents!

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Hasbenz on October 19, 2017

Best overall value of any sport car I have owned.

Good looking, handles well, reasonably efficient on gasoline usage, very reliable relative to repair and upkeep, powerful, shift changes are smooth [automatic transmission].

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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.