The Mercedes Benz 560 Sec, a grand coupe from the golden era of German automotive engineering, remains a sought-after classic for enthusiasts worldwide. Its blend of powerful performance, luxurious appointments, and timeless design makes it a compelling choice for those seeking a distinguished and rewarding ownership experience. However, purchasing a used 560 SEC requires careful consideration and a thorough understanding of what to look for. This guide, crafted by an experienced Mercedes-Benz technician, will provide you with essential insights to navigate the market and secure a well-maintained example of this iconic vehicle.
Why the 560 SEC Remains a Timeless Classic
The allure of the 560 SEC extends beyond its prestigious three-pointed star. This C126 generation S-Class Coupe embodies an era of over-engineered automobiles, built to a standard rarely seen today. Its elegant lines, powerful V8 engine, and opulent interior create a driving experience that is both exhilarating and refined. Whether you appreciate its commanding presence on the road or its comfortable and luxurious cabin, the 560 SEC offers a unique blend of classic charm and modern usability that continues to captivate car enthusiasts.
Navigating the Used 560 SEC Market
Finding the right 560 SEC involves patience and diligence. The market offers a range of conditions and prices, and understanding how to approach your search is crucial.
Patience is Key
Don’t rush into a purchase. The beauty of the classic car market is that there’s usually a good selection available if you are willing to wait for the right one. Taking your time allows you to assess different cars, compare conditions, and ultimately make a more informed decision.
Budget Realistically
Price points for 560 SEC models vary widely based on year, mileage, condition, and documented history. While you might find seemingly affordable options, remember that these are cars of a certain age and may require maintenance or restoration work. It’s often wiser to invest more upfront in a better-maintained example to avoid potentially costly repairs down the line. Consider your budget not just for the purchase price, but also for ongoing maintenance and potential restoration to keep your 560 SEC in top condition.
Location Matters: The California Advantage
If you’re in the market for a well-preserved 560 SEC, Southern California, particularly Los Angeles, presents a significant advantage. The region’s dry climate minimizes rust, and the sheer volume of luxury cars originally sold there means a greater selection of well-maintained vehicles is available. This competitive market can also lead to more favorable pricing. Furthermore, Southern California boasts a concentration of skilled Mercedes-Benz mechanics and specialized repair shops, ensuring access to expert care for your classic coupe.
Crucial Checks Before You Buy
Before committing to a 560 SEC, a thorough inspection and review of its history are paramount.
Documentation is Your Friend
Request a Carfax report to check for accident history, title issues, and mileage discrepancies. Equally important is obtaining a Vehicle Master Inquiry (VMI) from a Mercedes-Benz dealer. The VMI provides a record of all maintenance and repairs performed at authorized dealerships, offering valuable insight into the car’s service history. For an extra layer of verification, consider contacting Mercedes-Benz USA with the VIN to request a copy of the original window sticker. This document confirms factory options and the original selling dealer, which can be cross-referenced with service records. Don’t hesitate to delve into any available service books and repair receipts; contacting previous mechanics or owners, if possible, can also yield valuable information about the car’s upkeep.
Pre-Purchase Inspection (PPI)
Even with comprehensive documentation, a pre-purchase inspection (PPI) by a qualified Mercedes-Benz mechanic is indispensable. A PPI goes beyond a visual check and involves a detailed examination of the car’s mechanical, electrical, and structural components. The mechanic can assess the engine, transmission, suspension, brakes, air conditioning, and other critical systems, identifying potential issues that may not be apparent during a casual inspection. A PPI provides you with a clear picture of the car’s condition and potential future maintenance needs, empowering you to negotiate effectively or make an informed decision to walk away.
Common 560 SEC Problem Areas to Inspect
While generally robust, certain areas of the 560 SEC are known to be more prone to issues due to age and wear. Paying close attention to these areas during your inspection can save you from unexpected expenses.
Air Conditioning System
The air conditioning system in the 560 SEC is a known weak point. If the AC is not functioning, factor in a potential repair cost of around $2000, as issues can range from simple fixes like a fuse to more complex problems requiring compressor or component replacement. Don’t be surprised to find AC problems, and consider a non-functional system as a point for negotiation.
Becker Radio
The original Becker radios, while aesthetically period-correct, are notorious for unreliability. Many owners opt to replace them with modern aftermarket units offering improved sound quality and features like CD players or Bluetooth connectivity. While not a critical mechanical issue, be aware of the Becker radio’s potential shortcomings.
Power Windows and Door Locks
The power windows and door lock system rely on a vacuum system, which can develop leaks over time, leading to slow or malfunctioning windows and door locks. Test all windows and door locks to ensure they operate smoothly and reliably. Vacuum system issues can be diagnosed and repaired, but it’s an area to be aware of.
Radiator and Coolant
The original radiators in early 560 SEC models had plastic necks that were prone to cracking, especially if non-Mercedes-Benz coolant was used. Ensure the coolant is the correct type (Mercedes-Benz approved) and inspect the radiator for any signs of leaks or damage, particularly around the neck area. Consider the radiator and coolant hoses as potential maintenance items, especially if they appear original or aged.
Essential Maintenance for Longevity
To ensure your 560 SEC remains a reliable and enjoyable classic, adhering to a proactive and comprehensive maintenance schedule is crucial.
Aggressive Maintenance Schedule
Adopt a more frequent maintenance schedule than perhaps outlined in the original owner’s manual, considering the car’s age. Key maintenance points include:
- Oil Changes: Every 3,500 miles, especially under dusty or city driving conditions.
- Air and Fuel Filters: Replace air filters and both fuel filters approximately every 15,000 miles.
- Automatic Transmission Fluid: Change transmission fluid every 15,000 to 30,000 miles, depending on driving style.
- Brake Fluid Flush: Annually or every 12,000 miles due to brake fluid’s hygroscopic nature.
- Rear Differential Fluid: Every 30,000 miles, using Mercedes-Benz limited-slip differential fluid for models equipped with limited-slip differentials.
- Spark Plugs: Replace spark plugs every 15,000 to 30,000 miles.
- Power Steering Fluid and Filter: Change power steering fluid and filter every 20,000 to 30,000 miles to prolong pump life.
- Hydraulic Rear Suspension Fluid (if equipped): Change fluid every 30,000 miles to prevent costly issues.
- Motor Mounts: Inspect motor mounts every 50,000 miles and replace as needed.
- Wheel Alignment: Check wheel alignment every 12,000 miles or as needed.
This proactive approach to maintenance will contribute significantly to the long-term reliability and enjoyment of your 560 SEC.
Bodywork Considerations
Be cautious of 560 SEC models requiring bodywork. Properly restoring body panels to factory standards, especially addressing rust, can be exceptionally expensive. Unless you are prepared for significant investment in professional bodywork, it’s generally advisable to seek out examples with original, well-preserved bodies and paint.
Model Year Variations and Options
While the core 560 SEC remained consistent from 1986 to 1991, minor changes and options were introduced over the years.
1985 (500 SEC) vs. 1986-1991 (560 SEC)
The most significant difference lies under the hood. The 1984-1985 500 SEC models feature a smaller, less powerful engine compared to the 560 SEC’s larger and more potent M117 5.6-liter V8. If performance is a priority, the 1986-1991 560 SEC is the preferred choice. However, 500 SEC models may represent a more budget-friendly entry point into C126 ownership.
Key Features & Options
By the late 1980s, the 560 SEC was generously equipped. Standard features typically included ABS and airbags. Dual airbags were introduced around 1989, identifiable by the absence of a glove box (the passenger airbag occupies this space). Optional extras included:
- Power Rear Sunshade: A desirable and rare option.
- Velour Upholstery: Less common in the US market, velour seats offered a unique alternative to leather.
- Metallic Paint: A popular aesthetic upgrade.
- Reinforced Seats and Lumbar Support: Enhanced seat comfort options.
- Traction Control (ASR): Available from 1991, though not universally considered essential by enthusiasts.
Ensure the car you are considering includes its original tool kit, first aid kit, spare tire, and jack, as these contribute to the completeness and value of a classic Mercedes-Benz.
Conclusion
Purchasing a Mercedes Benz 560 SEC is an investment in a truly exceptional automobile. By conducting thorough research, performing meticulous inspections, and prioritizing a well-maintained example, you can confidently enter the world of 560 SEC ownership. Embrace patience, be diligent in your evaluation, and you will be rewarded with a timeless classic that offers a unique blend of performance, luxury, and enduring style for years to come. Enjoy the journey of finding your perfect 560 SEC and the rewarding ownership experience that awaits.
