Used 2018 Mercedes-Benz SLC
2018 Mercedes-Benz SLC Review
By Matt Degen
Updated December 02, 2019
Pros
The 2018 Mercedes-Benz SLC300 is among the few remaining convertibles that tout a retractable hardtop for better insulation and security. It’s quick and nimble yet still comfortable. A more powerful version is available in the 2018 Mercedes-AMG SLC 43, reviewed separately.
Cons
If your idea of a convertible is a lithe and tossable play thing, you’ll probably prefer the sharper handling and purer emotional appeal of a Porsche 718 Boxster, Jaguar F-Type or the all-wheel-drive Audi TT.
What's New?
The 2018 Mercedes-Benz SLC carries over with minimal changes. Among the updates are standard logo projectors on the side mirrors, minor aesthetic updates to the Mercedes logo, and a “RedArt Edition.”
If you can’t decide between a fun and free-spirited convertible or a stylish, buttoned-down luxury coupe, you’ll get both in the 2018 Mercedes-Benz SLC. That’s because Mercedes’ small 2-seater has a hardtop roof that transforms this vehicle from one shape to another. That hardtop roof also distinguishes the SLC from rivals such as the Jaguar F-Type, Porsche 718 Boxster and Audi TT. Even the forthcoming, all-new BMW Z4 is shedding its former folding metal roof in favor of lighter fabric. In true Mercedes fashion, the SLC is sporty but still favors a more comfortable ride compared to its rivals — good news for those who want to loaf along the coast vs. carve the canyons. Starting under $50,000, the SLC is also a relative value in this segment.
2018 Mercedes-Benz SLC Pricing
2018 Mercedes-Benz SLC pricing starts at $23,400 for the SLC SLC 300 Roadster 2D, which had a starting MSRP of $49,395 when new. The range-topping 2018 SLC SLC 300 Roadster 2D starts at $23,400 today, originally priced from $49,395.
Original MSRP | KBB Fair Purchase Price (national avg.) | |||
|---|---|---|---|---|
$49,395 | $23,400 |
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 2018 Mercedes-Benz SLC models in typical condition when purchasing from a dealership. These prices are updated weekly.
Driving the Mercedes-Benz SLC
With a turbocharged 4-cylinder engine worth 241 ponies powering the rear wheels, Mercedes’ compact roadster gets up and moves swiftly. The SLC300’s 0-60-mph time is clocked at 5.8 seconds, which is still faster than most other cars on the road. The SLC doesn’t have the razor-sharp handling of a Porsche Boxster, but it has the edge in overall comfort. As an everyday driver, we think the SLC is more livable. Moreover, the SLC’s driving characteristics can be modified with the press of a button. Five drive modes, ranging from eco-minded to comfort-oriented to the aggressive Sport Plus, change characteristics such as steering feel, throttle mapping and shift points. Speaking of, the latest SLC uses a 9-speed automatic transmission. While we’re still on the fence about some of today’s 9-speeds, those used in Mercedes’ are among the smoothest we’ve experienced.
Interior Comfort
Mercedes-Benz is a luxury-car maker, so it’s no surprise that premium amenities are the biggest strength of the 2018 SLC. Whether covered in MB-Tex faux leather or real hides, the seats are comfortable, even though there’s not a lot of room for taller drivers. The audio and climate controls aren’t as svelte as those of fresher Mercedes models, but they are still easily accessed and simple to use, and we love the satisfying tactile quality of the knobs and switches. A supplemental rotary knob below the gear selector controls infotainment functions. The electronic gear selector itself is a small nub of a thing that can be awkward to use at first. With the top up, the trunk boasts a respectable 10.1 cubic feet of space. Keep in mind that it shrinks to 6.4 with the top down.
Exterior Styling
With the hardtop up, the 2018 SLC-Class looks a lot like a coupe, albeit a somewhat awkward one thanks to the cap-like way the roof sits over the passenger compartment. Still you’d be hard-pressed to tell it’s actually a convertible unless you see it with the top down, and then you’re in for more of a visual treat. Its long hood, short trunk and wide stance give the SLC that classic roadster look. That top retracts in only 20 seconds, too. At under 163 inches, the Mercedes SLC is tiny — just a bit bigger than a Mazda Miata — which makes it a cinch to maneuver around town and easy to park in small spaces.
Favorite Features
GLASS-PANEL ROOF
A secure, hardtop roof isn’t the only thing that separates the 2018 SLC’s roof from those of its rivals. The SLC comes with a glass panorama roof, which brings the outside in even with the roof up. Add the Magic Sky Control ($2,500), and you can instantly toggle the tint from clear to opaque.
AIRSCARF & AIR GUIDES
It’s fun to drive a convertible on a cold day, but not if you’re getting chilled. To keep you warm, the SLC-Class has adjustable Air Guide draft deflectors on each rollbar, and the Airscarf system to blow warm air on your neck from an outlet in the headrest.
Standard Features
The 2018 Mercedes-Benz SLC300 includes a nice roster of standard features including power-operated seats with memory function, power-adjustable steering wheel, HomeLink universal garage remote, 17-inch wheels and panorama roof. The infotainment system includes a 7-inch display, dual USB ports, Bluetooth connectivity, and 8-speaker AM/FM/CD audio system with HD Radio receiver. Apple CarPlay and Android Auto connectivity are available as part of an options package or bundled together for an extra $350. The SLC’s safety systems include a system that monitors for driver drowsiness, and another that can automatically apply the brakes if a collision appears imminent.
Factory Options
Beyond the Magic Sky Control roof, most other major options can be found bundled into packages. The recommendable Premium 1 Package, for example, includes the Airscarf neck-warmer, heated seats, blind-spot monitoring, and upgraded Harman/ Kardon audio system. The Premium 2 Package adds dual-zone climate control, LED headlights with adaptive high beams, navigation and a classy analog clock. With the Premium 3 Package come driver-assistance features like adaptive cruise control, lane-keeping assistance, and a system that helps you parallel park. An adjustable suspension is also available, as are AMG body styling features and 18- or 19-inch wheels.
Engine & Transmission
The Mercedes-Benz SLC300 is powered by a 2.0-liter turbocharged 4-cylinder that puts out 241 horsepower and 273 lb-ft of torque, sending it to the rear wheels through a 9-speed automatic transmission. This powertrain provides a good blend of power and efficiency. It is strong enough to propel the SLC to 60 mph in less than six seconds while returning up to 32 mpg on the highway. If you’re looking for a more powerful SLC, you’ll probably want to step up to the V6 in the Mercedes-AMG SLC43, reviewed separately. Keep in mind that the Mercedes drinks the pricier premium unleaded gasoline.
2.0-liter turbocharged inline-4
241 horsepower @ 5,500 rpm
273 lb-ft of torque @ 1,300-4,000 rpm
EPA city/highway fuel economy: 25/32 mpg
2018 Mercedes-Benz SLC
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2018 Mercedes-Benz SLC Values and Prices
Style | Trade-In Value | Private Party Value | Fair Purchase Price | ||
|---|---|---|---|---|---|
$14,400 | $21,600 | $23,400 |
Style | Trade-In Value | Private Party Value | Fair Purchase Price | ||
|---|---|---|---|---|---|
$32,100 | $36,800 | $39,800 | |||
$38,400 | $40,900 | $44,200 |
2018 Mercedes-Benz SLC Depreciation
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2018 Mercedes-Benz SLC Annual Depreciation
Year | Vehicle Depreciation* | Resale Value | Trade-In Value | ||
|---|---|---|---|---|---|
2023 | $10,953 | $24,432 | $21,631 | ||
2024 | $822 | $23,610 | $21,147 | ||
2025 | $6,271 | $17,339 | $14,576 | ||
Now | + $4,261 | $21,600 | $14,400 |
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2-Year Forecasted Depreciation
*Depreciation for the last 12 months of the private party resale value.
2018 Mercedes-Benz SLC 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 | 3296 lbs. | ||
|---|---|---|---|
Fuel Capacity | 15.9 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 | ||
Moon Roof/Sun Roof | Available | ||
Number of Doors | 2 doors | ||
Panorama Moon Roof | Available | ||
Power Folding Exterior Mirrors | Available | ||
Power Retractable Top | Available | ||
Privacy Glass | Available | ||
LED Headlights | Available | ||
Rear Spoiler | Available |
Fuel Economy
City | 25 mpg | ||
|---|---|---|---|
Highway | 32 mpg | ||
Combined | 27 mpg |
Mechanical
Drivetrain | RWD | ||
|---|---|---|---|
Transmission Type | Automatic | ||
9 speed | Available | ||
Recommended Fuel | Premium | ||
Hill Start Assist | Available | ||
Parking Assist System | Available |
Performance
Horsepower | 241 @ 5550 RPM | ||
|---|---|---|---|
Torque | 273 @ 1300 rpm | ||
Engine | 4-Cyl, Turbo, 2.0 Liter | ||
0 to 60 | 5.8 seconds | ||
Top Speed | 155 mph |
Warranty
Basic | 4 years / 50000 miles |
|---|
Comfort & Convenience
Entertainment
Interior
Seating
Security
Technology
2018 Mercedes-Benz SLC Safety
Safety Features & Technology
Compare to Similar Vehicles
![]() Used 2018 Mercedes-Benz SLC | ![]() Used 2018 Audi A5 | ![]() Used 2018 BMW 4 Series | ![]() Used 2020 Mercedes-Benz SLC | ||
|---|---|---|---|---|---|
| Price | $23,400 | $19,500 | $19,300 | $33,400 | |
| KBB.com Rating | 3.6 | 4.8 | 4.1 | 4.0 | |
| Consumer Rating | 4.7 | 4.0 | 4.7 | 4.7 | |
| Fuel Economy | City 25/Hwy 32/Comb 27 MPG | City 24/Hwy 34/Comb 27 MPG | City 24/Hwy 34/Comb 27 MPG | City 23/Hwy 32/Comb 27 MPG | |
| Fuel Type | Gas | N/A | N/A | Gas | |
| Seating Capacity | 2 | 4 | 4 | 2 | |
| Basic Warranty | 4 years or 50000 miles | 4 years or 50000 miles | 4 years or 50000 miles | 4 years or 50000 miles | |
| Horsepower | 241 @ 5550 RPM | 252 @ 5000 RPM | 248 @ 5200 RPM | 241 @ 5500 RPM | |
| Engine | 4-Cyl, Turbo, 2.0 Liter | 4-Cyl, Turbo, 2.0 Liter | 4-Cyl, SULEV, Turbo, 2.0 Liter | 4-Cyl, Turbo, 2.0 Liter | |
| Drivetrain | RWD | AWD | RWD | RWD |
2018 Mercedes-Benz SLC Rankings
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FAQs
What is the MPG for a 2018 Mercedes-Benz SLC?
The 2018 Mercedes-Benz SLC is rated to return city/highway fuel economy of 25/32 mpg.
How much should a 2018 Mercedes-Benz SLC cost?
Used 2018 Mercedes-Benz SLC prices currently range from $23,400 for the SLC 300 Roadster 2D to $23,400 for the SLC 300 Roadster 2D when purchasing from a dealership, depending on a range of factors like equipment, mileage, and condition.
What's the cheapest Mercedes-Benz SLC?
The cheapest 2018 Mercedes-Benz SLC is the SLC 300 Roadster 2D, with a Kelley Blue Book Fair Purchase Price of $23,400.
Is the 2018 Mercedes-Benz SLC reliable?
The 2018 Mercedes-Benz SLC is part of the 3rd-generation SLC, which our owners give an above-average reliability rating of 4.8 out of 5.






