The Mercedes-Benz S-Class W126 generation, produced from 1979 to 1985, stands as a testament to refined German engineering and luxurious appointments. Celebrated for its lasting build quality and comfortable drive, the 500 SE and SEL models continue to captivate drivers and collectors alike. While many of these vehicles grace New Zealand roads today, understanding what to look for in maintaining them is essential for preserving their legacy.
Common issues include rust (as mentioned above), malfunctioning electric windows and sunroof, worn suspension components (especially the self-leveling system on some models), and issues with the air conditioning system. Fuel injection systems can also become problematic with age, leading to poor running and high fuel consumption.
WOF failures commonly occur due to rust issues affecting structural integrity. Suspension components, particularly ball joints and bushings, should be inspected carefully. Brake lines are prone to corrosion and should be examined for leaks or damage. Ensure all lights are functioning correctly, as these are frequent WOF failure points.
The W126 S-Class, particularly the 500 SE and SEL variants, are renowned for their exceptional build quality and refined driving experience, powered by a robust V8 engine. Unfortunately, age can bring about a few adversities. Common issues include rust around wheel arches and sills, malfunctioning electric windows, and air conditioning system faults. Regular engine maintenance is critical; these vehicles respond poorly to delayed service.
Key components, particularly the cooling system, should be closely monitored. At approximately 150,000km, the water pump, thermostat, and radiator hoses require inspection to ensure optimal performance. If you're looking to keep your classic S-Class in top condition, consider our Cooling service pack for safe and efficient upkeep.
Additionally, frequently checked parts include brake systems. Regular front and rear brake servicing can prevent common braking issues associated with vehicle age. Our Front Brake Service and Rear Brake Service packages ensure you stay safe on the road while enjoying that soft, cushioned ride crucial to the S-Class experience. Fuel efficiency can also dwindle with older fuel injection systems; regular servicing and maintenance can mitigate these potential highs in consumption. Find more on fuel filtration in our Filtration category.