The 1986 Mercedes-Benz SL-Class, part of the R107 generation, is a quintessential German luxury roadster. Produced from 1971 to 1989, this model year falls within the latter half of its successful run, featuring iconic body styles like the two-door convertible with an optional hardtop. Key trims typically included the 300SL and 560SL. Known for its robust build, timeless design, and comfortable ride, the R107 SL remains popular for its blend of performance and luxury, making it a desirable classic.
The Good
The 1986 SL excels in refined performance and legendary Mercedes-Benz reliability. Its comfortable, luxurious interior and elegant, enduring design appeal to emotional desires, while its solid engineering and potential for long-term value satisfy practical considerations.
The Bad
Common issues for the 1986 SL include potential rust, especially around wheel wells and sills. Electrical gremlins, aging rubber components (hoses, seals), and the complexity of some systems can lead to costly repairs if not maintained.
1986 Mercedes-Benz SL-Class: Quick Overview
- Engine Options:
For the 1986 model year, the primary engine options for the Mercedes-Benz SL-Class (R107) were:- 3.0L Inline-6 (M103): Found in models like the 300SL.
- Horsepower: Approximately 188 hp
- Torque: Approximately 195 lb-ft - 5.0L V8 (M116): Found in models like the 420SL.
- Horsepower: Approximately 188 hp (US spec)
- Torque: Approximately 220 lb-ft (US spec) - 5.6L V8 (M117): Found in models like the 560SL.
- Horsepower: Approximately 227 hp (US spec)
- Torque: Approximately 284 lb-ft (US spec)
- 3.0L Inline-6 (M103): Found in models like the 300SL.
- Fuel Economy:
Fuel economy varied significantly based on engine and driving conditions, but generally, expect around 14-17 MPG city and 17-22 MPG highway for the inline-6, and slightly lower for the V8 engines. These figures are estimates for the era. - 0-60 Times:
Approximate 0-60 mph times were:- 300SL: Around 8.5-9.5 seconds
- 420SL: Around 8.0-9.0 seconds
- 560SL: Around 7.0-8.0 seconds
- Towing Capacity:
Towing capacity was not a primary design consideration for the SL-Class, and official figures are rarely published or recommended. It is generally not suited for significant towing. - Trim-Level Features (Common):
The 1986 SL-Class, regardless of trim, offered a high level of luxury and refinement for its time. Key features often included:- Power-adjustable seats with memory
- Automatic climate control
- Leather upholstery
- Power windows and locks
- Cruise control
- Premium sound system
- Anti-lock Braking System (ABS)
- Optional hardtop with defroster
- Limited-slip differential (often on higher trims)
- Burl wood interior trim
- Power steering and brakes
1986 Mercedes-Benz SL-Class Specifications
Vehicle Information
| Year | 1986 |
| Make | Mercedes-Benz |
| Model | SL-Class |
| Trim | - |
| Style | Convertible |
| Type | Convertible |
| Category | Compact Car |
Manufacturing Details
| Made In | Germany |
| Manufacturing City | SINDELFINGEN |
Dimensions
| Doors | 2-Door |
| Curb Weight | - |
| Gross Vehicle Weight Rating | - |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 5.6L V8 |
| Engine Size | 5.6L |
| Engine Cylinders | 8 |
| Transmission | 4-Speed Automatic |
| Transmission Type | Automatic |
| Transmission Speeds | 4-Speed |
| Drivetrain | Rear-Wheel Drive |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
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What Problems Does the 1986 Mercedes-Benz SL-Class Have?
The 1986 Mercedes-Benz SL-Class, part of the R107 generation, is generally known for its robust build and long-term durability. However, like any vehicle of this age, certain issues are frequently reported by owners. One of the most common concerns is rust, particularly in areas prone to moisture such as the front and rear fenders, rocker panels, and the trunk floor. Thorough inspection is crucial for any prospective buyer. Electrical systems, while relatively simple by modern standards, can develop gremlins over time. This can manifest as non-functioning gauges, intermittent power windows, or issues with the climate control system. The aging of rubber and plastic components is also a significant factor; cooling system hoses, vacuum lines, fuel lines, and suspension bushings can degrade, leading to leaks, performance issues, or a harsh ride if not replaced. The fuel distributor on fuel-injected models can also be a source of expensive repairs if it fails. The automatic transmission, while typically robust, can exhibit harsh shifting or failure if maintenance has been neglected. Some specific recalls might have occurred over the vehicle's long life, but they would be for components that would have been addressed years ago. For the 1986 model year, specific issues are not typically isolated by year within the R107's long production run. The majority of problems are related to age and wear and tear rather than inherent design flaws of that particular year. Long-term reliability hinges heavily on consistent and proper maintenance. Cars that have been meticulously serviced, with regular fluid changes and component replacements, tend to be far more reliable than those that have been neglected. The complexity of the V8 engines, particularly the 5.6L in the 560SL, means that specialized knowledge and parts are often required for repairs, which can add to the ownership cost.
How long will the 1986 Mercedes-Benz SL-Class last?
With proper and consistent maintenance, the 1986 Mercedes-Benz SL-Class is capable of exceeding 200,000 miles and often reaching well over 300,000 miles. Many examples on the road today have significantly high mileage, a testament to their robust engineering. Long-term durability is a strong suit; the chassis is stout, and the engines are over-engineered. Weaknesses over time primarily revolve around the aging of rubber and plastic components, potential for rust if not protected, and the increasing scarcity and cost of specialized parts. Electrical components can also become a concern with age. However, with dedicated care and timely repairs, these vehicles can remain reliable companions for decades.
What Technology & Safety Features are Included?
The 1986 Mercedes-Benz SL-Class, while not boasting the digital interfaces of modern cars, offered a sophisticated suite of comfort, convenience, and safety features for its era. Built-in technology focused on driver comfort and ease of operation. Standard features often included automatic climate control, power-adjustable seats (sometimes with memory function), power windows, power locks, cruise control, and a premium sound system that was cutting-edge at the time. The dashboard featured clear, analog gauges for vital information. For entertainment, buyers could expect an AM/FM radio, often with a cassette player, and high-quality speakers.
In terms of driver-assistance features, the Anti-lock Braking System (ABS) was a significant safety innovation for 1986 and was generally standard on most SL models, providing enhanced stability during hard braking. Power steering and power brakes were also standard, contributing to a comfortable driving experience.
Safety was a priority for Mercedes-Benz. The SL-Class featured a reinforced passenger compartment, crumple zones, and often dual front airbags (though availability varied by market and model year, the 1986 model likely had them as standard or a common option). The integrated roll bar, which could automatically deploy in certain situations, was another key safety element of the convertible body style, adding structural rigidity. Optional features might have included heated seats or a limited-slip differential for enhanced traction.
Specific crash-test ratings from organizations like the NHTSA or IIHS for vehicles from the mid-1980s are not as readily available or as comprehensive as modern ratings. However, Mercedes-Benz vehicles of this period were generally regarded as exceptionally safe and well-built, with a strong emphasis on occupant protection through solid construction and advanced safety systems for their time.
In terms of driver-assistance features, the Anti-lock Braking System (ABS) was a significant safety innovation for 1986 and was generally standard on most SL models, providing enhanced stability during hard braking. Power steering and power brakes were also standard, contributing to a comfortable driving experience.
Safety was a priority for Mercedes-Benz. The SL-Class featured a reinforced passenger compartment, crumple zones, and often dual front airbags (though availability varied by market and model year, the 1986 model likely had them as standard or a common option). The integrated roll bar, which could automatically deploy in certain situations, was another key safety element of the convertible body style, adding structural rigidity. Optional features might have included heated seats or a limited-slip differential for enhanced traction.
Specific crash-test ratings from organizations like the NHTSA or IIHS for vehicles from the mid-1980s are not as readily available or as comprehensive as modern ratings. However, Mercedes-Benz vehicles of this period were generally regarded as exceptionally safe and well-built, with a strong emphasis on occupant protection through solid construction and advanced safety systems for their time.
What Colors Options are Available?
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1986 Mercedes-Benz SL-Class Prices and Market Value
When new, the 1986 Mercedes-Benz SL-Class was a premium luxury vehicle with a substantial price tag. Depending on the specific model (e.g., 300SL, 420SL, 560SL) and options, prices typically ranged from approximately $45,000 to over $60,000 USD, equivalent to well over $100,000 in today's money.
Currently, used market prices for the 1986 SL-Class vary widely based on condition, mileage, originality, and specific trim. Well-maintained examples in excellent condition can fetch anywhere from $10,000 to $30,000+, with the desirable 560SL models often commanding the highest prices. Poorly maintained or high-mileage examples might be found for under $5,000.
Depreciation on these vehicles has long since passed its steepest curve. They have largely entered the classic or enthusiast car market, where value is driven by desirability, rarity, and condition rather than typical automotive depreciation. Factors affecting resale value include thorough service history, originality of parts, absence of rust, low mileage, and the presence of desirable options like the hardtop. Well-documented maintenance is a significant plus.
Currently, used market prices for the 1986 SL-Class vary widely based on condition, mileage, originality, and specific trim. Well-maintained examples in excellent condition can fetch anywhere from $10,000 to $30,000+, with the desirable 560SL models often commanding the highest prices. Poorly maintained or high-mileage examples might be found for under $5,000.
Depreciation on these vehicles has long since passed its steepest curve. They have largely entered the classic or enthusiast car market, where value is driven by desirability, rarity, and condition rather than typical automotive depreciation. Factors affecting resale value include thorough service history, originality of parts, absence of rust, low mileage, and the presence of desirable options like the hardtop. Well-documented maintenance is a significant plus.
1986 Mercedes-Benz SL-Class Cost of Ownership
Owning a 1986 Mercedes-Benz SL-Class is generally considered costly rather than economical. Insurance premiums, especially for classic car policies, can be moderate if the vehicle is well-maintained and stored properly. Fuel economy, particularly for the V8 models, is subpar by modern standards, contributing to higher running costs. Maintenance and repair are where costs escalate; specialized parts can be expensive, and labor rates for qualified technicians familiar with these older German luxury cars are also significant. Routine maintenance is vital to prevent more costly issues down the line. Overall, expect to invest substantially in upkeep to keep this classic in excellent condition.
1986 Mercedes-Benz SL-Class Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
-
City Mileage
12 miles/gallon
Highway Mileage
16 miles/gallon
1986 Mercedes-Benz SL-Class Warranty
Basic
Original warranty
0 months / No data
Estimated remaining
Expired
Powertrain
Original warranty
0 months / No data
Estimated remaining
Expired
Rust
Original warranty
0 months / No data
Estimated remaining
Expired
1986 Mercedes-Benz SL-Class Insurance
Insurance for a 1986 Mercedes-Benz SL-Class is moderately priced, reflecting its status as a Convertible with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 1986 Mercedes-Benz SL-Class Compare to Other Convertible?
The 1986 Mercedes-Benz SL-Class (R107) competed in a luxury sports convertible segment with notable rivals such as the Porsche 944, BMW 6 Series Convertible (E24), and the Jaguar XJS Convertible.
Performance: While the SL offered competent performance, especially in 560SL guise, rivals like the Porsche 944 often provided sharper handling and a more engaging driving dynamic. The BMW 6 Series offered a potent straight-six or V12 engine in later years, while the XJS leaned towards comfortable cruising with its V12.
Features: Mercedes-Benz typically led in terms of build quality and interior refinement. The SL offered a robust and comfortable experience with excellent standard features like ABS and climate control. The Jaguar XJS often boasted more opulent interiors, while the BMW 6 Series provided a sportier, driver-focused cabin. The Porsche 944 was more minimalist and performance-oriented.
Reliability: The Mercedes-Benz R107 SL is renowned for its bulletproof mechanicals and long-term durability, often outlasting its contemporaries in terms of overall longevity. While electrical gremlins can appear with age, the core engineering is exceptionally robust. The Jaguar XJS, particularly with its V12, could be mechanically complex and more prone to issues. BMWs of this era were generally reliable but could be more expensive to repair than a comparable Mercedes. Porsches are known for their build quality, but maintenance can also be costly.
Price: At launch, the SL was positioned at the higher end of the luxury spectrum. Used prices for a 1986 SL-Class are competitive, often offering better value for a well-maintained example compared to a similarly aged Porsche or BMW, especially considering its enduring appeal.
Alternatives:
For a more engaging driving experience, a well-preserved Porsche 944 or an early BMW 3 Series Convertible (E30) could be considered. If outright luxury and a more classic grand tourer feel are desired, a Jaguar XJS Convertible might be appealing, though potentially with higher maintenance risks. However, for a blend of classic luxury, solid build quality, and proven long-term reliability, the 1986 Mercedes-Benz SL-Class remains a compelling choice and often a better value proposition than some rivals.
Performance: While the SL offered competent performance, especially in 560SL guise, rivals like the Porsche 944 often provided sharper handling and a more engaging driving dynamic. The BMW 6 Series offered a potent straight-six or V12 engine in later years, while the XJS leaned towards comfortable cruising with its V12.
Features: Mercedes-Benz typically led in terms of build quality and interior refinement. The SL offered a robust and comfortable experience with excellent standard features like ABS and climate control. The Jaguar XJS often boasted more opulent interiors, while the BMW 6 Series provided a sportier, driver-focused cabin. The Porsche 944 was more minimalist and performance-oriented.
Reliability: The Mercedes-Benz R107 SL is renowned for its bulletproof mechanicals and long-term durability, often outlasting its contemporaries in terms of overall longevity. While electrical gremlins can appear with age, the core engineering is exceptionally robust. The Jaguar XJS, particularly with its V12, could be mechanically complex and more prone to issues. BMWs of this era were generally reliable but could be more expensive to repair than a comparable Mercedes. Porsches are known for their build quality, but maintenance can also be costly.
Price: At launch, the SL was positioned at the higher end of the luxury spectrum. Used prices for a 1986 SL-Class are competitive, often offering better value for a well-maintained example compared to a similarly aged Porsche or BMW, especially considering its enduring appeal.
Alternatives:
For a more engaging driving experience, a well-preserved Porsche 944 or an early BMW 3 Series Convertible (E30) could be considered. If outright luxury and a more classic grand tourer feel are desired, a Jaguar XJS Convertible might be appealing, though potentially with higher maintenance risks. However, for a blend of classic luxury, solid build quality, and proven long-term reliability, the 1986 Mercedes-Benz SL-Class remains a compelling choice and often a better value proposition than some rivals.
Final Verdict: Is the 1986 Mercedes-Benz SL-Class a Good Convertible?
The 1986 Mercedes-Benz SL-Class is ideal for enthusiasts who appreciate classic automotive design, enduring quality, and a comfortable, refined driving experience. It's best suited for those who value a well-built cruiser over outright sports car performance.
It is definitely worth buying for individuals seeking a stylish and reliable classic convertible that holds its value well. Condition is paramount; prioritize examples with meticulous maintenance records and minimal rust. Opting for a used model is the only option. The 560SL trim is generally the most sought-after due to its more powerful engine and comprehensive features, making it a strong contender. However, a well-maintained 300SL or 420SL can also offer great value. Be prepared for higher ownership costs compared to modern vehicles, particularly in maintenance and repairs.
It is definitely worth buying for individuals seeking a stylish and reliable classic convertible that holds its value well. Condition is paramount; prioritize examples with meticulous maintenance records and minimal rust. Opting for a used model is the only option. The 560SL trim is generally the most sought-after due to its more powerful engine and comprehensive features, making it a strong contender. However, a well-maintained 300SL or 420SL can also offer great value. Be prepared for higher ownership costs compared to modern vehicles, particularly in maintenance and repairs.
Drew B
Drew is a seasoned automotive expert and contributor to VinCheck.info. With nearly 15 years of experience as a former Porsche technician, he brings a wealth of hands-on knowledge to his writing. Born in North Carolina, a region renowned for its deep-rooted NASCAR culture, Drew developed a passion for cars early in life, often building and working on vehicles from a young age. At VINCheck, Drew leverages his extensive technical background to provide in-depth analyses of various vehicles. His articles often focus on engine performance, reliability, and maintenance insights, offering readers practical information grounded in real-world experience. Some of his notable contributions include reviews on the Mazda CX-5's longevity and detailed examinations of engine options for models like the 2011 Toyota Camry and Tacoma