The 2020 Mercedes-Benz SLC is a luxurious compact two-seat roadster, marking the final production year for this model, which was a refreshed version of the iconic SLK-Class (R172 generation, 2017-2020 as SLC). Its defining feature is a retractable hardtop convertible body style, offering both open-air thrills and coupe-like security. Key trims included the SLC 300 and the high-performance AMG SLC 43, with new pricing ranging from approximately $50,000 to $65,000. It stands out for its sophisticated Mercedes-Benz luxury, agile handling, and the engineering marvel of its vario-roof.
The Good
The 2020 SLC offers a compelling blend of emotional appeal and practical benefits. Emotionally, its sleek design, powerful AMG option, and the exhilaration of open-air driving with the retractable hardtop are highly attractive. Practically, Mercedes-Benz's renowned build quality suggests good reliability, the SLC 300 offers decent efficiency, and the hardtop provides better insulation and security than a soft-top convertible.
The Bad
Potential weaknesses for the 2020 SLC include its limited trunk space, especially with the roof down, and an infotainment system that feels somewhat dated compared to newer Mercedes models. Rear visibility is compromised with the roof up, and the ride can be stiff in AMG versions. Being a luxury convertible, ownership costs for maintenance and repairs are also higher.
2020 Mercedes-Benz SLC: Quick Overview
Here is a summary of key specifications for the 2020 Mercedes-Benz SLC:
- Engine Options:
- SLC 300: 2.0-liter turbocharged inline-4 cylinder engine.
- AMG SLC 43: 3.0-liter twin-turbocharged V6 engine.
- Horsepower:
- SLC 300: 241 hp.
- AMG SLC 43: 385 hp.
- Fuel Economy (EPA estimated MPG):
- SLC 300: Approximately 23 MPG city / 32 MPG highway.
- AMG SLC 43: Approximately 20 MPG city / 29 MPG highway.
- 0-60 mph Acceleration:
- SLC 300: Around 5.8 seconds.
- AMG SLC 43: Around 4.6 seconds.
- Towing Capacity: Not applicable; the SLC is not designed or rated for towing.
- Key Trim-Level Features:
- SLC 300 (Standard Features):
- 17-inch multi-spoke alloy wheels.
- LED daytime running lights and taillights.
- MB-Tex upholstery.
- 7-inch high-resolution display with Apple CarPlay® and Android Auto™ integration.
- Bluetooth® audio streaming and hands-free interface.
- ATTENTION ASSIST® (driver drowsiness monitor).
- Active Brake Assist (forward collision warning with automatic emergency braking).
- DYNAMISELECT drive mode selector.
- Power-folding hardtop.
- AMG SLC 43 (Adds/Upgrades over SLC 300):
- AMG-enhanced 3.0L V6 biturbo engine.
- AMG Sport Exhaust System.
- AMG Sport Suspension and high-performance braking system.
- 18-inch AMG multi-spoke alloy wheels.
- AMG body styling.
- Nappa leather upholstery with red stitching.
- AMG instrument cluster.
- LED High Performance headlamps.
- Analog clock in the dashboard.
- Common Optional Features Across Trims:
- AIRSCARF® neck-level heating system.
- COMAND® navigation with 7-inch color display.
- harman/kardon® Logic 7® Surround Sound System.
- KEYLESS-GO® (keyless entry and start).
- Blind Spot Assist and Lane Keeping Assist.
- PARKTRONIC® with Advanced Parking Assist.
- MAGIC SKY CONTROL® (electrochromic glass roof).
- Various design and appearance packages (e.g., Night Package, AMG Line).
2020 Mercedes-Benz SLC Specifications
Vehicle Information
| Year | 2020 |
| Make | Mercedes-Benz |
| Model | SLC |
| Trim | - |
| Style | - |
| Type | Convertible |
| Category | Compact Car |
Manufacturing Details
| Made In | Germany |
| Manufacturing City | BREMEN |
Dimensions
| Doors | 2-Door |
| Curb Weight | 1534.96 kg |
| Gross Vehicle Weight Rating | - |
| Overall Height | 130.3 cm |
| Overall Length | 413.51 cm |
| Overall Width | 181.61 cm |
| Wheelbase Length | 243.08 cm |
| Standard Seating | 2 |
Engine & Performance
| Engine | 2L I4 |
| Engine Size | 2L |
| Engine Cylinders | 4 |
| Transmission | 9-Speed Automatic |
| Transmission Type | Automatic |
| Transmission Speeds | 9-Speed |
| Drivetrain | Rear-Wheel Drive |
Additional Features
| Anti-Brake System | 4-Wheel ABS |
| Steering Type | Rack & Pinion |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | $50,945 USD |
| Invoice Price | - |
| Delivery Charges | $995 USD |
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What Problems Does the 2020 Mercedes-Benz SLC Have?
As the 2020 Mercedes-Benz SLC represents the final model year of the R172 generation (originally launched as the SLK), many of the initial kinks and design flaws typically found in a new generation have largely been ironed out. Consequently, the 2020 model generally benefits from a more refined and reliable platform compared to its earlier iterations.
That said, being a complex luxury vehicle, particularly a convertible with a sophisticated retractable hardtop, some potential areas for concern, though not necessarily "frequently reported problems" for this specific model year, can be extrapolated from similar vehicles or older SLK/SLC models:
Regarding recalls, the 2020 Mercedes-Benz SLC has had a very limited number due to its late-stage production run. For instance, specific recalls might have involved minor software updates or component inspections, common across various Mercedes models. Owners should always check the National Highway Traffic Safety Administration (NHTSA) website using their specific vehicle's VIN for the most accurate and up-to-date recall information.
In summary, the 2020 SLC is a relatively reliable vehicle, benefiting from years of refinement. Long-term reliability concerns will primarily revolve around the higher cost of parts and specialized labor for any repairs, typical of a premium German convertible, rather than inherent widespread design flaws.
That said, being a complex luxury vehicle, particularly a convertible with a sophisticated retractable hardtop, some potential areas for concern, though not necessarily "frequently reported problems" for this specific model year, can be extrapolated from similar vehicles or older SLK/SLC models:
- Retractable Hardtop Mechanism: While generally robust, the intricate system of motors, hydraulics, and sensors can be a point of failure over many years. Issues with roof operation, leaks from aging seals, or sensor malfunctions could arise with age. For a 2020 model, this is less likely to be a concern early on but is a potential long-term maintenance item.
- Electrical Gremlins: Like many modern luxury cars packed with electronics, minor electrical issues, such as flickering lights, malfunctioning sensors, or infotainment glitches, are always a possibility, though not widespread for the 2020 SLC.
- Infotainment System Age: While stable, the COMAND infotainment system in the 2020 SLC is an older generation compared to Mercedes' MBUX system. Users might find it less intuitive or slower than more modern interfaces, but actual "problems" are rare.
- Standard Mercedes-Benz Maintenance: Long-term reliability is closely tied to diligent maintenance. Neglecting scheduled services or using non-OEM parts can lead to premature wear of components, especially in the engine and transmission.
Regarding recalls, the 2020 Mercedes-Benz SLC has had a very limited number due to its late-stage production run. For instance, specific recalls might have involved minor software updates or component inspections, common across various Mercedes models. Owners should always check the National Highway Traffic Safety Administration (NHTSA) website using their specific vehicle's VIN for the most accurate and up-to-date recall information.
In summary, the 2020 SLC is a relatively reliable vehicle, benefiting from years of refinement. Long-term reliability concerns will primarily revolve around the higher cost of parts and specialized labor for any repairs, typical of a premium German convertible, rather than inherent widespread design flaws.
How long will the 2020 Mercedes-Benz SLC last?
With proper and consistent maintenance, a 2020 Mercedes-Benz SLC can realistically achieve 150,000 to 200,000 miles, providing 10 to 15 or more years of service. Mercedes-Benz vehicles are engineered for durability, and the SLC, being the final year of a mature platform, reflects this.
Long-term durability hinges on adhering to the manufacturer's service schedule, using genuine Mercedes-Benz parts, and addressing any issues promptly. Key maintenance includes regular oil changes, transmission fluid service, and brake fluid flushes. Weaknesses over time can include wear on suspension components like bushings and shock absorbers, potential for minor electrical gremlins as wiring ages, and eventual wear on the retractable hardtop's seals and hydraulic system. Interior materials, while luxurious, will show wear without proper care. Rust can also be a concern in regions exposed to road salt if underbody protection isn't maintained.
Long-term durability hinges on adhering to the manufacturer's service schedule, using genuine Mercedes-Benz parts, and addressing any issues promptly. Key maintenance includes regular oil changes, transmission fluid service, and brake fluid flushes. Weaknesses over time can include wear on suspension components like bushings and shock absorbers, potential for minor electrical gremlins as wiring ages, and eventual wear on the retractable hardtop's seals and hydraulic system. Interior materials, while luxurious, will show wear without proper care. Rust can also be a concern in regions exposed to road salt if underbody protection isn't maintained.
What Technology & Safety Features are Included?
The 2020 Mercedes-Benz SLC, while offering a luxurious and engaging driving experience, features technology that, by its final model year, was beginning to show its age compared to newer Mercedes models, yet it remained robust and functional.
Infotainment and Entertainment:
The core of the SLC's infotainment is a 7-inch high-resolution display, controlled by the COMAND® interface knob and buttons on the center console. Standard features include Bluetooth® audio streaming and hands-free calling, two USB ports, and an SD card reader. For 2020, Apple CarPlay® and Android Auto™ integration became standard, a welcome addition for smartphone users. An optional COMAND® navigation system was available, which also included an in-dash DVD/CD player. Audiophiles could opt for the impressive harman/kardon® Logic 7® Surround Sound System.
Driver-Assistance Features:
Standard driver-assistance features for the 2020 SLC included ATTENTION ASSIST®, which monitors driver behavior for signs of fatigue, and Active Brake Assist, a forward collision warning system with autonomous emergency braking capabilities. Optional driver aids significantly enhanced safety and convenience:
Safety Features:
The SLC's safety suite is comprehensive, reflecting Mercedes-Benz's commitment to occupant protection:
Other Noteworthy Tech & Optional Features:
Crash-Test Ratings:
Due to the specialized, low-volume nature of luxury sports cars like the SLC, neither the National Highway Traffic Safety Administration (NHTSA) nor the Insurance Institute for Highway Safety (IIHS) typically conduct full crash tests or provide specific ratings for these models in the U.S. Owners can rely on the vehicle's robust engineering and comprehensive suite of active and passive safety features inherent to the Mercedes-Benz brand.
Infotainment and Entertainment:
The core of the SLC's infotainment is a 7-inch high-resolution display, controlled by the COMAND® interface knob and buttons on the center console. Standard features include Bluetooth® audio streaming and hands-free calling, two USB ports, and an SD card reader. For 2020, Apple CarPlay® and Android Auto™ integration became standard, a welcome addition for smartphone users. An optional COMAND® navigation system was available, which also included an in-dash DVD/CD player. Audiophiles could opt for the impressive harman/kardon® Logic 7® Surround Sound System.
Driver-Assistance Features:
Standard driver-assistance features for the 2020 SLC included ATTENTION ASSIST®, which monitors driver behavior for signs of fatigue, and Active Brake Assist, a forward collision warning system with autonomous emergency braking capabilities. Optional driver aids significantly enhanced safety and convenience:
- Blind Spot Assist: Monitors blind spots and warns the driver of vehicles in adjacent lanes.
- Lane Keeping Assist: Alerts the driver if the vehicle drifts out of its lane without signaling.
- PARKTRONIC® with Advanced Parking Assist: Uses sensors to help with parallel and perpendicular parking maneuvers.
Safety Features:
The SLC's safety suite is comprehensive, reflecting Mercedes-Benz's commitment to occupant protection:
- Multiple airbags, including dual-stage front airbags, head/thorax side-impact airbags, and knee airbags.
- Antilock Braking System (ABS) and Electronic Stability Program (ESP®).
- PRE-SAFE® pre-collision system, which prepares the cabin for an impending accident by tightening seatbelts and adjusting the passenger seat.
- Pop-up roll bars behind the seats provide added protection in the event of a rollover.
- A rigid body structure designed to absorb crash forces effectively.
Other Noteworthy Tech & Optional Features:
- AIRSCARF®: A Mercedes-Benz innovation that delivers warm air to the neck and shoulders, extending the convertible season.
- MAGIC SKY CONTROL®: An electrochromic glass roof panel that can be switched from transparent to opaque at the touch of a button.
- KEYLESS-GO®: Allows for keyless entry and starting.
- Adaptive Highbeam Assist.
Crash-Test Ratings:
Due to the specialized, low-volume nature of luxury sports cars like the SLC, neither the National Highway Traffic Safety Administration (NHTSA) nor the Insurance Institute for Highway Safety (IIHS) typically conduct full crash tests or provide specific ratings for these models in the U.S. Owners can rely on the vehicle's robust engineering and comprehensive suite of active and passive safety features inherent to the Mercedes-Benz brand.
What Colors Options are Available?
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In the meantime, feel free to explore the other sections for more content.
In the meantime, feel free to explore the other sections for more content.
2020 Mercedes-Benz SLC Prices and Market Value
When new, the 2020 Mercedes-Benz SLC 300 had an MSRP starting around $50,000-$55,000, while the performance-oriented AMG SLC 43 began closer to $65,000-$70,000, before options. As of 2024, current used market prices for a 2020 SLC 300 typically range from $30,000-$40,000, and an AMG SLC 43 can command $40,000-$55,000, depending heavily on mileage, condition, and optional features.
Depreciation for luxury roadsters like the SLC is generally significant, often losing a substantial portion of their value in the first few years. However, the SLC, being the final model year of a long-running design, might experience a slightly slower depreciation curve than some high-volume luxury vehicles, particularly for well-maintained examples. Factors affecting resale value include the overall condition, mileage, complete service history, and desirable optional packages like AIRSCARF or the AMG Line. Its status as a discontinued model could also lead to a niche appreciation in the long term, though it will not appreciate like a rare classic in the short or medium term.
Depreciation for luxury roadsters like the SLC is generally significant, often losing a substantial portion of their value in the first few years. However, the SLC, being the final model year of a long-running design, might experience a slightly slower depreciation curve than some high-volume luxury vehicles, particularly for well-maintained examples. Factors affecting resale value include the overall condition, mileage, complete service history, and desirable optional packages like AIRSCARF or the AMG Line. Its status as a discontinued model could also lead to a niche appreciation in the long term, though it will not appreciate like a rare classic in the short or medium term.
2020 Mercedes-Benz SLC Cost of Ownership
Long-term ownership of the 2020 Mercedes-Benz SLC is definitively costly, not economical. Insurance premiums will be higher due to its luxury sports car classification and higher repair costs; AMG models will be even pricier. Fuel costs are also substantial, as both the SLC 300 and AMG SLC 43 require premium unleaded gasoline. Maintenance is expensive, with Mercedes-Benz dealerships charging premium rates for scheduled services (Service A/B can be several hundred dollars) and specialized labor. Repairs, when needed, involve high-priced genuine parts and specialized technicians. Buyers should budget generously for all aspects of ownership, as running a premium German convertible entails significant ongoing expenses beyond the initial purchase price.
2020 Mercedes-Benz SLC Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
60.19 liters
City Mileage
9.78 km/l
Highway Mileage
13.61 km/l
2020 Mercedes-Benz SLC Safety Rating
NHTSA
2020 Mercedes-Benz SLC Warranty
Basic
Original warranty
48 months / 50,000 miles
Estimated remaining
Expired
Powertrain
Original warranty
48 months / 50,000 miles
Estimated remaining
Expired
Rust
Original warranty
48 months / 50,000 miles
Estimated remaining
Expired
2020 Mercedes-Benz SLC Insurance
Insurance for a 2020 Mercedes-Benz SLC is moderately priced, reflecting its status as a Convertible with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2020 Mercedes-Benz SLC Compare to Other Convertible?
The 2020 Mercedes-Benz SLC operates in a competitive segment of compact luxury roadsters, facing off against strong rivals like the BMW Z4 (G29 generation), Porsche 718 Boxster, and the Audi TT Roadster. Here's how it stacks up:
Recommended Alternatives:
The SLC holds its own for those who appreciate the classic Mercedes-Benz luxury, the security and insulation of a retractable hardtop, and a proven, refined platform over cutting-edge infotainment.
- Performance:
The SLC 300 (241 hp) offers spirited acceleration and agile handling, comparable to the BMW Z4 30i (255 hp) and Audi TT Roadster. The AMG SLC 43 (385 hp) elevates performance significantly, competing with the Z4 M40i (382 hp) and the base Porsche 718 Boxster (300 hp) or Boxster S (350 hp). While the AMG SLC 43 delivers thrilling straight-line speed, the Porsche 718 Boxster generally offers superior, more communicative steering and overall sharper driving dynamics for track enthusiasts. The Z4, with its newer platform, feels more modern in its drive. - Features and Technology:
The SLC boasts a luxurious interior and features like the unique retractable hardtop and optional AIRSCARF, which are significant draws. However, its COMAND infotainment system, while functional and gaining Apple CarPlay/Android Auto for 2020, feels dated compared to the cutting-edge iDrive 7.0 in the 2020 BMW Z4 or Audi's virtual cockpit in the TT. The Z4 also offers a soft-top that operates faster. - Reliability:
All these German luxury brands generally offer good reliability, especially when maintained diligently. The SLC, being at the end of its generation, has had most major issues resolved. However, all these vehicles come with higher long-term maintenance and repair costs due to specialized parts and labor, so none are "economy" cars. - Price:
When new, the SLC was competitively priced. In the used market, the SLC can often be found for a slightly more accessible price than a comparably equipped Porsche 718 Boxster, which tends to hold its value more strongly. Used BMW Z4s (G29) are also competitive, often reflecting their newer technology.
Recommended Alternatives:
- BMW Z4 (G29): This is arguably the SLC's closest and strongest rival, offering a more contemporary design, a faster-operating soft-top, and a much more advanced infotainment system. It's a better choice if you prioritize modern tech and a refined driving experience.
- Porsche 718 Boxster: For the ultimate driving enthusiast who prioritizes razor-sharp handling, precise steering, and a more engaging driving experience, the Boxster is the superior choice, albeit at a higher price point.
- Audi TT Roadster: A stylish alternative with a fantastic interior and available Quattro AWD, but generally less potent engine options than the SLC 43 or Z4 M40i.
The SLC holds its own for those who appreciate the classic Mercedes-Benz luxury, the security and insulation of a retractable hardtop, and a proven, refined platform over cutting-edge infotainment.
Final Verdict: Is the 2020 Mercedes-Benz SLC a Good Convertible?
The 2020 Mercedes-Benz SLC is an ideal vehicle for buyers seeking a compact, luxurious two-seat roadster with the distinct advantage of a retractable hardtop, offering the best of both convertible freedom and coupe-like security. It appeals to those who appreciate Mercedes-Benz prestige, a comfortable ride with sporty undertones, and a classic roadster aesthetic, rather than cutting-edge technology or track-focused performance.
It is absolutely worth buying, but under specific conditions. Opting for a used 2020 model is the most sensible choice, as depreciation has already absorbed much of its initial value, offering excellent value for money. The SLC 300 trim is perfect for those desiring a balance of efficiency, comfort, and sufficient spirited driving. The AMG SLC 43 is for true performance enthusiasts willing to embrace higher ownership costs for significantly more power and a more aggressive driving experience. Avoid it if you prioritize the latest infotainment, extensive cargo space, or the absolute sharpest driving dynamics of rivals like the Porsche Boxster. Be prepared for premium ownership expenses characteristic of a luxury Mercedes-Benz convertible.
It is absolutely worth buying, but under specific conditions. Opting for a used 2020 model is the most sensible choice, as depreciation has already absorbed much of its initial value, offering excellent value for money. The SLC 300 trim is perfect for those desiring a balance of efficiency, comfort, and sufficient spirited driving. The AMG SLC 43 is for true performance enthusiasts willing to embrace higher ownership costs for significantly more power and a more aggressive driving experience. Avoid it if you prioritize the latest infotainment, extensive cargo space, or the absolute sharpest driving dynamics of rivals like the Porsche Boxster. Be prepared for premium ownership expenses characteristic of a luxury Mercedes-Benz convertible.
Simon A
Simon is a contributor to VinCheck, where he provides articles and reviews on various automotive topics. His work focuses on delivering accurate and up-to-date information about used cars, helping readers make informed decisions.