The Mercedes-Benz 560 SEC, a grand tourer from the golden era of German automotive engineering, remains a highly sought-after classic for enthusiasts and collectors alike. Combining powerful performance, luxurious appointments, and timeless styling, the 560 SEC (C126 chassis code) represents the pinnacle of the S-Class coupe lineage of its time. If you’re considering purchasing a Mercedes-Benz 560 SEC, this comprehensive guide will provide you with essential insights into what to look for, ensuring you make an informed decision and acquire a well-maintained example of this iconic vehicle.
Why the 560 SEC Remains a Desirable Classic
The allure of the Mercedes-Benz 560 SEC extends beyond its striking aesthetics. It’s a car that embodies several key qualities that contribute to its enduring appeal:
- Performance and Power: The heart of the 560 SEC is its potent 5.5-liter V8 engine (M117), delivering robust power and smooth acceleration. This engine provides ample performance for both relaxed cruising and spirited driving, making it a true grand tourer.
- Luxury and Refinement: The 560 SEC boasts a meticulously crafted interior, featuring high-quality materials such as rich wood trim, supple leather (depending on options), and comfortable seating. It was equipped with numerous luxury features as standard or optional, reflecting its status as a flagship coupe.
- Timeless Design: Bruno Sacco’s design for the C126 is widely regarded as a masterpiece of automotive styling. Its clean lines, elegant proportions, and pillarless coupe silhouette have aged gracefully, making it instantly recognizable and admired today.
- Solid Engineering and Durability: Mercedes-Benz vehicles of this era are renowned for their robust construction and engineering integrity. While age and mileage necessitate careful inspection, the 560 SEC is inherently a durable car when properly maintained.
- Investment Potential: Well-preserved Mercedes-Benz 560 SEC models have shown a tendency to appreciate in value, making them not only enjoyable to own but also potentially a sound investment for classic car enthusiasts.
Key Areas to Inspect When Buying a Mercedes-Benz 560 SEC
Purchasing a classic car like a Mercedes-Benz 560 SEC requires a thorough inspection to identify any potential issues and ensure you’re investing in a solid vehicle. Here are the critical areas to scrutinize:
1. Documentation and History
- Service Records: Meticulous service records are paramount. Look for evidence of regular maintenance, including oil changes, fluid flushes, and tune-ups. A well-documented history indicates a caring owner and proactive maintenance.
- CARFAX/VMI Report: Obtain a CARFAX report to check for accident history, title issues, and odometer discrepancies. Request a Vehicle Master Inquiry (VMI) from a Mercedes-Benz dealer, which can reveal warranty work and dealer-performed maintenance.
- Original Window Sticker: If possible, obtain a copy of the original window sticker. This document lists the original options and the delivering dealer, adding to the car’s provenance.
- Owner History: Ideally, seek a car with a limited number of owners, preferably maintained by enthusiasts who understood the importance of proper care.
2. Engine and Mechanicals
- Engine Condition: Start the engine and listen for any unusual noises, such as knocking or excessive ticking. Check for smooth idling and throttle response. Inspect for oil leaks around the valve covers, oil pan, and front crankshaft seal.
- Transmission: Ensure the automatic transmission shifts smoothly through all gears without hesitation or slipping. Check the transmission fluid condition and level.
- Cooling System: Inspect the radiator for leaks and damage, particularly around the plastic necks, a known weak point in original radiators. Check the coolant condition and look for signs of non-Mercedes coolant, which can damage the system. Examine hoses for cracks or swelling.
- Air Conditioning System: The air conditioning system is a common area of concern. Test the A/C thoroughly to ensure it blows cold air. Be prepared for potential repairs, as A/C work on these cars can be costly. Factor in a potential repair cost of around $2000 if the A/C is non-functional.
- Power Steering and Hydraulic Suspension (if equipped): Check for leaks in the power steering system and listen for whining noises from the pump. If the car has hydraulic rear suspension (self-leveling suspension), inspect for leaks and ensure it functions correctly. Hydraulic suspension fluid should be changed regularly (every 30,000 miles or so).
- Brakes: Check the condition of the brake rotors and pads. Test the brakes for responsiveness and ensure the ABS system (if equipped) is functioning correctly. Brake fluid flushes are crucial for maintaining brake system health.
- Exhaust System: Inspect the exhaust system for rust, leaks, and damage.
3. Body and Exterior
- Rust: Rust is the primary enemy of classic cars. Thoroughly inspect the body for rust, particularly in common areas such as:
- Lower door edges and rocker panels
- Wheel arches and fenders
- Around the windshield and rear window
- Trunk and hood edges (aluminum panels are less prone to rust but can corrode)
- Undercarriage and chassis rails
- Paint: Evaluate the paint condition. Check for consistent paint finish, overspray, or mismatched panels, which could indicate prior accident repairs.
- Body Panels and Alignment: Inspect panel gaps for consistency and alignment. Uneven gaps or misaligned panels can be a sign of accident damage.
- Glass and Trim: Check for cracks or damage to the windshield and other glass. Ensure all trim pieces are present and in good condition.
4. Interior and Electronics
- Interior Condition: Assess the overall condition of the interior. Check for wear and tear on the seats, carpets, and door panels. Sun damage can be prevalent, especially on dashboards and wood trim.
- Upholstery: Inspect the upholstery for rips, tears, or excessive wear. Velour seats were an option but are less common in the US market.
- Electronics: Test all electrical systems, including:
- Power windows and sunroof
- Power door locks and vacuum system (these can be problematic)
- Lighting (headlights, taillights, interior lights)
- Becker Radio: Factory Becker radios are known for being unreliable. Consider this a potential replacement item and not a major flaw.
- Electric rear window sunshade (if equipped): Test its operation.
- Lumbar support (if equipped): Test its operation.
- Airbags (if equipped): Dual airbags were introduced in later models (around 1989). Note that models with dual airbags may not have a glove box.
- Instruments and Gauges: Ensure all gauges are functioning correctly.
5. Options and Features
- Verify Options: Compare the car’s options to the original window sticker or VMI report to ensure it matches the advertised specifications.
- Desirable Options: Consider options that enhance the value and enjoyment of the 560 SEC, such as:
- Metallic paint
- Leather upholstery
- Rear electric sunshade
- Lumbar support
- Four-place rear seating (more common in sedans, but occasionally found in coupes)
- ABS (Anti-lock Braking System) – standard on later models
- ASR (Acceleration Skid Control) – introduced in 1991, some consider it unnecessary.
Mercedes-Benz 500 SEC vs. 560 SEC: Key Differences
Understanding the differences between the earlier 500 SEC and the later 560 SEC is crucial for making the right choice:
- Engine: The most significant difference is the engine. The 500 SEC (1981-1985 in the US market, earlier elsewhere) features a 5.0-liter V8, while the 560 SEC (1986-1991) is equipped with the larger and more powerful 5.5-liter V8. The 560 SEC offers noticeably better performance.
- Model Years: Generally, 1986-1991 models are US-spec 560 SECs. “Gray market” imports were less common after 1986. 1985 and earlier models in the US market are typically 500 SECs.
- Equipment: By 1986, the 560 SEC came with a high level of standard equipment. Later models (especially 1989 onwards) incorporated cosmetic interior changes and features like dual airbags.
Budgeting for Your Mercedes-Benz 560 SEC
The price range for a Mercedes-Benz 560 SEC can vary widely depending on condition, mileage, history, and options.
- Entry-Level: $10,000 – $15,000 might get you an earlier 500 SEC or a higher-mileage 560 SEC that may require some cosmetic or mechanical attention.
- Mid-Range: $15,000 – $30,000 will typically buy a well-maintained 560 SEC in good condition with reasonable mileage.
- Top-Tier: Exceptional, low-mileage, concours-condition 560 SEC examples can command prices of $30,000 and upwards, potentially reaching significantly higher for pristine, collector-grade cars. A near-new example with extremely low mileage could fetch prices exceeding $40,000 or even more.
Important Budget Considerations:
- Purchase Price: Factor in the initial purchase price of the car.
- Inspection Costs: Budget for a pre-purchase inspection by a qualified Mercedes-Benz mechanic.
- Deferred Maintenance: Anticipate some level of deferred maintenance, even on well-maintained cars.
- Ongoing Maintenance: Mercedes-Benz 560 SECs require regular and sometimes costly maintenance. Establish a budget for oil changes (every 3,500 miles is recommended for optimal engine health), fluid flushes, filter replacements, and other preventative maintenance tasks.
- Parts Costs: Parts for these cars can be more expensive than for contemporary vehicles, especially body panels like the aluminum hood and trunk.
- Repair Costs: Be prepared for potential repairs, especially for common issues like the A/C system, Becker radio, and vacuum system.
Location Matters: Finding Your 560 SEC
Geographic location can influence both the availability and condition of Mercedes-Benz 560 SECs.
- Southern California (Los Angeles Area): Southern California, particularly Los Angeles, is often considered a prime hunting ground for well-preserved 560 SECs. The favorable climate helps minimize rust, and the large market offers a wider selection and potentially more competitive prices. Many of the best examples are found in this region.
Maintenance Schedule for Longevity
To ensure the longevity and reliability of your Mercedes-Benz 560 SEC, adhere to a proactive maintenance schedule:
- Oil Changes: Every 3,500 miles, especially for city or dusty driving conditions.
- Air and Fuel Filters: Approximately every 15,000 miles (two fuel filters).
- Automatic Transmission Fluid: Every 15,000 to 30,000 miles, depending on driving style.
- Brake Fluid Flush: Annually or every 12,000 miles.
- Rear Differential Fluid: Every 30,000 miles (use Mercedes-Benz limited-slip differential fluid for LSD-equipped models).
- Spark Plugs: Every 15,000 to 30,000 miles.
- Power Steering Fluid and Filter: Every 20,000 to 30,000 miles.
- Hydraulic Suspension Fluid (if equipped): Every 30,000 miles.
Conclusion: Embrace the Legacy of the Mercedes-Benz 560 SEC
The Mercedes-Benz 560 SEC is more than just a classic car; it’s a statement of refined taste and appreciation for automotive excellence. By conducting thorough research, performing a meticulous inspection, and adhering to a diligent maintenance schedule, you can confidently acquire and enjoy a well-preserved example of this iconic grand tourer. Owning a 560 SEC is an investment in driving pleasure and a connection to a distinguished era of Mercedes-Benz heritage.
