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Mercedes-Benz SLK-Class
#8 Best Luxury Convertibles of 2015

Used 2015 Mercedes-Benz SLK-Class

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2015
2014
Fuel Economy
22 - 26 combined mpg
Horsepower
201 - 415 hp
Engine
3 engines available
Engine Options
  • 4-Cyl, Turbo, 1.8 Liter
  • V6, 3.5 Liter
  • V8, 5.5 Liter
Cargo Volume
10.1 cu ft
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2015 Mercedes-Benz SLK-Class Review

Matt Degen

By Matt Degen

Updated December 23, 2019

Matt Degen is an author specializing in reviewing cars with the goal of helping you find the best one for your needs. Prior to joining Kelley Blue Book in 2012, he was a writer and editor for over a decade at The Orange County Register newspaper. There he covered automobiles, music and food -- all things Matt is passionate about. He holds degrees in Communications and Culinary Arts. When not evaluating vehicles, he is cooking on his YouTube channel.

Pros

If you want a premium roadster with a hardtop roof that protects against the elements and offers a supple ride that coddles on your daily commute, it’s hard to beat the 2015 Mercedes SLK. If you’re a fan of manual transmissions, the SLK250 is the only new Mercedes to offer one.

Cons

If you play basketball (or even first base) for a living, you probably need more stretch-out room than the SLK offers. In that case, the 4-seat Audi A5/S5 might appeal. If you seek a luxury roadster with razor-sharp handling, try the Porsche Boxster or BMW Z4.

What's New?

Now in the midst of its 3rd-generation design that made the SLK look and feel more like the ultra-luxurious SL, Mercedes’ entry-level roadster carries over unchanged for 2015.

Think of the 2015 Mercedes-Benz SLK as two cars in one: a fun-loving open-air roadster and a cozy, secure coupe. The dual personality comes courtesy of a hardtop roof that retracts with the touch of a button. As with its main competitor the BMW Z4, this ability to transform gives this small 2-seater a degree more practicality. Mercedes’ compact convertible touts a plusher ride compared to its more dynamic BMW rival yet still offers a good blend of power and handling. For drivers seeking performance above and beyond that found in the base turbocharged 4-cylinder SLK250 or V6-powered SLK350, there’s the top-line SLK55 AMG model that packs a 416-horsepower V8. Fundamental to all SLK luxury roadsters are the prestige and pampering inherent in Mercedes-Benz vehicles.

2015 Mercedes-Benz SLK-Class Pricing

2015 Mercedes-Benz SLK-Class pricing starts at $14,275 for the SLK-Class SLK 250 Roadster 2D, which had a starting MSRP of $47,645 when new. The range-topping 2015 SLK-Class SLK 55 AMG Roadster 2D starts at $28,816 today, originally priced from $72,585.

Original MSRP
KBB Fair Purchase Price (national avg.)
$47,645
$14,275
$58,575
$19,820
$72,585
$28,816

The Kelley Blue Book Fair Purchase Price for any individual used vehicle can vary greatly according to mileage, condition, location, and other factors. The prices here reflect what buyers are currently paying for used 2015 Mercedes-Benz SLK-Class models in typical condition when purchasing from a dealership. These prices are updated weekly.

Driving the Mercedes-Benz SLK-Class

Mercedes’ compact roadster comes in three distinct flavors thanks to its trio of engine choices, but all feel solid on the road, have taut and responsive steering, and still return a plush highway ride. Where they diverge is in the Department of Power. Even the SLK250 with its turbocharged 1.8-liter 4-cylinder is quick (0-60 mph arrives in 6.5 seconds), but Sport mode should be engaged to wring the most out of it. In Normal mode, that base engine is nagged by turbo lag. V6 models are noticeably quicker (0-60 mph in 5.4 seconds), while the V8-powered SLK AMG model blazes (0-60 mph in 4.5 seconds). The SLK still isn’t as naturally light on its feet as a Boxster or Z4, but it’s extremely satisfying to drive, especially with the top down and the tunes up.

Interior Comfort

The 2015 SLK roadster isn’t as pure a sports car as some of its competitors, but that’s a benefit in terms of everyday comfort and convenience. Whether outfitted in the leather-like MB-Tex or the real thing, the SLK’s seats are a pleasure to be in. Audio and climate controls are right where you want them and have a satisfying tactile quality that affirms you’re piloting a premium car. Even with the top up it’s easy to see the sky thanks to the standard panorama roof. As an upgrade, the innovative Magic Sky Control feature lets you adjust the level of tinting.

Exterior Styling

Given its hallmark feature of a power-operated retractable hardtop, the 2015 SLK-Class resembles either a sleek coupe or premium roadster. In either form, this 2-seat Mercedes shares character lines with its bigger, twice-the-price brother, the SL-Class roadster. At around 163 inches in length – about a half-foot longer than a Mazda MX-5 Miata – the SLK is compact and easy to park. Yet its long hood and low, wide stance give this tidy roadster a look of substance. Top-line SLK55 AMG versions up the performance aesthetics with tinted headlight housings, quad exhaust outlets and a small rear spoiler.

Favorite Features

RETRACTABLE HARDTOP
The SLK-Class brought retractable hardtops into the mainstream when the roadster debuted in 1998, and it’s still setting the pace. Such a setup delivers a delicious automotive duality: In less than 20 seconds, the SLK can transform from buttoned-down coupe to sun-seeking convertible.

AIRSCARF & AIR GUIDES
In a bid to make top-down motoring more pleasant in milder weather, Mercedes engineers have provided adjustable Air Guide draft deflectors on each rollbar and the Airscarf system, which delivers warm air to your neck from an outlet in the headrest.

Standard Features

With an entry price around $45,000, a base 2015 Mercedes-Benz SLK250 comes with a 6-speed manual transmission, 5.8-inch infotainment display, 8-speaker AM/FM/CD/HD Radio audio with a USB port and Bluetooth streaming, auto-dimming mirrors and power seats. In addition to a stronger V6 engine and standard automatic transmission, the SLK350 adds heated leather seats, the Airscarf heating system and harman/kardon sound system. The V8-powered SLK55 AMG features enhancements like larger brakes, upgraded 18-inch tires and performance-oriented transmission and suspension. Among all models’ safety features is Attention Assist, which monitors for driver drowsiness.

Factory Options

Many options are available to expand the 2015 Mercedes SLK’s comfort and enjoyment. Among them are a Multimedia Package with navigation, a 7-inch LCD screen and a 10-gig music bank, and the Driver Assistance Package offering blind-spot monitoring and Mercedes’ Distronic Plus cruise control with automatic braking. The Magic Sky Control roof is a trick feature that turns the panorama glass roof from transparent to tinted to block the sun’s rays during the day and let in the moon’s glow at night while the top is up. Mercedes-Benz’s Designo line offer ultra-high-end exterior paint, interior upholstery options and more.

Engine & Transmission

In base form, the SLK’s turbocharged 4-cylinder engine makes 201 horsepower and is mated to a 6-speed manual transmission or optional 7-speed automatic. Except for the aforementioned turbo lag, the engine should suffice for most drivers, though we must point out that the base powerplant in the BMW Z4 makes 240 horsepower. Moving up to the V6 in the SLK350 nets 302 horsepower, making it a capable performer. Speed freaks can get plenty of it in the top-line SLK55, which stuffs a 5.5-liter V8 under the hood that offers 415 horsepower. Those last two engines are exclusively mated to a 7-speed automatic transmission and feature an ECO start/stop to save a little fuel at stoplights. All SLK roadsters are rear-wheel drive and drink 91-octane gasoline.

1.8-liter turbocharged inline-4
201 horsepower @ 5,500 rpm
229 lb-ft of torque @ 2,000-4,300 rpm
EPA city/highway fuel economy: 22/32 mpg (manual), 23/33 mpg (automatic)

3.5-liter V6
302 horsepower @ 6,500 rpm
273 lb-ft of torque @ 3,500-5,250 rpm
EPA city/highway fuel economy: 21/29 mpg

5.5-liter V8
415 horsepower @ 6,800 rpm
398 lb-ft of torque @ 4,500 rpm
EPA city/highway fuel economy: 19/28 mpg


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2015 Mercedes-Benz SLK-Class
KBB.com Consumer Reviews

4.8
Consumer Rating
Based on 33 Consumer Reviews
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88%Recommend this vehicle
5
88%
5
88%
4
6%
4
6%
3
0%
3
0%
2
6%
2
6%
1
0%
1
0%
Value
4.5
Performance
4.7
Quality
4.7
Comfort
4.5
Reliability
4.9
Styling
4.9

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2015 Mercedes-Benz SLK-Class Styles

Style
Price
Combined Fuel Economy
Horsepower
Engine
Cargo Capacity
Torque
0-60
Top Speed
Curb Weight
SLK 250 Roadster 2D
$14,275
26 MPG
201 @ 5500 RPM
4-Cyl, Turbo, 1.8 Liter
10.1 cu ft
229 lb-ft
6.5 seconds
150 mph
3241 lbs
SLK 350 Roadster 2D
$19,820
23 MPG
302 @ 6500 RPM
V6, 3.5 Liter
10.1 cu ft
273 lb-ft
5.4 seconds
155 mph
3417 lbs
SLK 55 AMG Roadster 2D
$28,816
22 MPG
415 @ 6800 RPM
V8, 5.5 Liter
10.1 cu ft
398 lb-ft
4.5 seconds
155 mph
3583 lbs
See Full Specs for All 2015 Mercedes-Benz Slk-Class Styles
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2015 Mercedes-Benz SLK-Class Depreciation

A 2015 Mercedes-Benz SLK-Class has depreciated $8,436 or 40% in the last 3 years and has a current resale value of $12,254 and trade-in value of $10,277.

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2015 Mercedes-Benz SLK-Class
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2015 Mercedes-Benz Slk-Class Annual Depreciation

Year
Vehicle Depreciation*
Resale Value
Trade-In Value
2022
+ $2,560
$20,690
$19,682
2023
$3,084
$17,606
$16,127
2024
$3,538
$14,068
$12,243
Now
$1,814
$12,254
$10,277
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2-Year Forecasted Depreciation

*Depreciation for the last 12 months of the private party resale value.

2015 Mercedes-Benz Slk-Class Depreciation

Annual Depreciation is an estimation of what your vehicle's value might be over time based on an average of similar vehicles. Estimations are calculated by comparing Kelley Blue Book Private Party Values of vehicles similar to yours over time, as well as forecasts from Manheim Auction data comparing current and projected auction values against current Kelley Blue Book Private Party and Trade-In Values. This is not a guarantee of actual depreciation. Local weather conditions, market factors and driver performance will also impact your vehicle's actual depreciation.


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Specifications

Dimensions, Weights & Capacities

Curb Weight
3241 lbs.
Fuel Capacity
18.5 gallons
Front Head Room
38.0 inches
Front Leg Room
42.5 inches
Max Seating Capacity
2
Overall Length
162.8 inches
Front Shoulder Room
52.2 inches
Trunk or Cargo Capacity
10.1 cu.ft.
Turning Diameter
34.5 feet
Wheel Base
95.7 inches
Width with mirrors
79.0 inches

Exterior

Adaptive Headlights
Available
Alloy Wheels
Available
HID Headlights
Available
Moon Roof/Sun Roof
Available
Number of Doors
2 doors
Panorama Moon Roof
Available
Power Folding Exterior Mirrors
Available
Power Retractable Top
Available
Rear Spoiler
Available

Fuel Economy

City
23 mpg
Highway
33 mpg
Combined
26 mpg

Mechanical

Drivetrain
RWD
Transmission Type
Automatic
7 speed
Available
Recommended Fuel
Premium
Hill Start Assist
Available
Parking Assist System
Available

Performance

Horsepower
201 @ 5500 RPM
Torque
229 @ 2000 rpm
Engine
4-Cyl, Turbo, 1.8 Liter
0 to 60
6.5 seconds
Top Speed
150 mph

Warranty

Basic
4 years / 50000 miles
Powertrain
4 years / 50000 miles
Corrosion
4 years / 50000 miles

Comfort & Convenience

  • Remote Control Liftgate/Trunk Release
  • Integrated Garage Door Opener
  • Interior Ambient Lighting

Entertainment

  • iPod Connector
  • iPod Interface
  • MP3 Player
  • Premium Radio
  • Satellite Radio
  • Bluetooth Streaming Audio
  • CD Player

Interior

  • Leather-Wrapped Steering Wheel
  • Power Windows
  • Steering Wheel Controls
  • Tilt Steering Wheel
  • Tilt/Telescoping Steering Wheel

Seating

  • Leather Seats
  • Heated Seats
  • Dual Power Front Seats
  • Power Driver's Seat

Security

  • Alarm System

Technology

  • Bluetooth Wireless Technology
  • Cruise Control
  • Hands Free Phone
  • Navigation System
  • Remote Keyless Entry
  • Internet Access
  • Proximity Sensing Keyless Entry
  • Remote Engine Start
  • Smartphone Interface
  • USB Port
  • Voice Recognition System
  • Real-Time Traffic Information

2015 Mercedes-Benz SLK-Class Safety

2015 Mercedes-Benz SLK-Class Safety Technology

  • Child Door Locks: Not available
  • Child Seat Anchors
  • Driver Airbag
  • Passenger Airbag
  • Stability Control
  • Blind-Spot Alert
  • Collision Warning System with Auto Brake
  • Driver Attention Assist Monitor
  • Driver Knee Airbag
  • Emergency & Security Services
  • Front & Rear Parking Sensors
  • Front Head Curtain Airbag
  • Front Knee Airbag
  • Front Side Airbag
  • Lane Departure Warning System
  • Rear Parking Sensors

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See Details
Price
$14,275
$12,748
$13,203
$12,630
KBB.com Rating
3.8
4.8
3.5
4.2
Consumer Rating
4.8
4.7
4.3
4.7
Fuel Economy
City 23/Hwy 33/Comb 26 MPG
City 27/Hwy 34/Comb 30 MPG
City 24/Hwy 32/Comb 27 MPG
City 21/Hwy 29/Comb 24 MPG
Fuel Type
Gas
Gas
Gas
Gas
Seating Capacity2244
Basic Warranty
4 years or 50000 miles
3 years or 36000 miles
4 years or 50000 miles
4 years or 50000 miles
Horsepower
201 @ 5500 RPM
155 @ 6000 RPM
135 @ 5500 RPM
220 @ 4450 RPM
Engine
4-Cyl, Turbo, 1.8 Liter
4-Cyl, 2.0 Liter
4-Cyl, MultiAir, Turbo, 1.4 Liter
4-Cyl, Turbo, 2.0 Liter
Drivetrain
RWD
RWD
FWD
AWD

2015 Mercedes-Benz SLK-Class Rankings

FAQs

What is the MPG for a 2015 Mercedes-Benz SLK-Class?

2015 Mercedes-Benz SLK-Class city/highway fuel economy ratings range from 19/28 mpg to 23/33 mpg, depending on trim and equipment.

How much should a 2015 Mercedes-Benz SLK-Class cost?

Used 2015 Mercedes-Benz SLK-Class prices currently range from $14,275 for the SLK 250 Roadster 2D to $28,816 for the SLK 55 AMG Roadster 2D when purchasing from a dealership, depending on a range of factors like equipment, mileage, and condition.

What's the cheapest Mercedes-Benz SLK-Class?

The cheapest 2015 Mercedes-Benz SLK-Class is the SLK 250 Roadster 2D, with a Kelley Blue Book Fair Purchase Price of $14,275.

Is the 2015 Mercedes-Benz SLK-Class reliable?

The 2015 Mercedes-Benz SLK-Class is part of the 3rd-generation SLK-Class, which our owners give an above-average reliability rating of 4.9 out of 5.

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