The allure of an 80’s convertible Mercedes is undeniable. These vehicles represent a blend of classic Mercedes-Benz engineering with the open-air freedom of a convertible, embodying a unique era of automotive design. However, like any classic car, owning an 80’s convertible Mercedes comes with its own set of maintenance considerations and potential issues. For enthusiasts and prospective owners, understanding these aspects is crucial for a smooth and enjoyable ownership experience.
One of the critical points to consider, particularly with earlier models, is the timing chain. The 380SL, for example, initially featured a single-row timing chain, which was updated to a more robust double-row chain in later years, around 1984. Retrofitting an earlier model with the double-row chain is a significant undertaking, potentially costing around $3,000. While the double-row chain is more durable, it’s essential to remember that even these systems require regular maintenance. Components like guides and tensioners should be inspected and maintained to prevent future issues, although this maintenance is considerably less expensive than the initial upgrade.
Suspension components are another area that demands attention in 80’s convertible Mercedes models. These cars, built with substantial heft, naturally place stress on suspension parts over time. If the suspension hasn’t been recently overhauled, anticipate the need for replacement of shocks – Bilstein is often a favored choice – subframe bushings, ball joints, and springs. Neglecting these components can lead to a compromised ride quality and handling.
For models from 1981 onwards, the Bosch CIS fuel injection system is a common feature. While generally reliable, the CIS system can present challenges, often manifesting as cold, warm, or hot start problems. Troubleshooting issues related to idle, starting, and misfires in these systems can sometimes become costly and complex, with some owners investing considerable sums in chasing down elusive problems.
The climate control system in 80’s convertible Mercedes cars of this era is notoriously intricate. Many consider it an over-engineered system prone to developing faults over time. Its operation, heavily reliant on vacuum, can be unintuitive to diagnose and repair. Vacuum actuators, often located behind the dashboard, control various climate functions. While these actuators can be rebuilt affordably, accessing them and pinpointing the faulty component can be challenging. A sudden loss of heat, for instance, often points to the monovalve, a heating system component known for its failure rate. Fortunately, the monovalve is relatively inexpensive and straightforward to replace, once identified as the culprit.
Rust is an ever-present concern with older vehicles, and 80’s convertible Mercedes are no exception. While not known to be among the worst offenders, their age increases the likelihood of rust formation. Key areas to inspect include the headlight buckets and the lower sections of doors. Remember the adage: the visible rust is often just the tip of the iceberg, and the actual extent of corrosion could be ten times greater than what’s immediately apparent.
The convertible top mechanism in these 80’s convertible Mercedes is generally praised for its simple and robust mechanical design. Similarly, the hardtop, when equipped, is well-engineered and relatively easy to manage. A homemade winch system can be a practical solution for removing, storing, and reinstalling the hardtop.
Inside the cabin, dashboard cracks are a common cosmetic issue. Blue dashboards, in particular, seem to be more susceptible to cracking. Interior condition is crucial to the overall value and enjoyment of an 80’s convertible Mercedes.
Radiator issues, especially those related to plastic filler necks, are another point of concern. The plastic can become brittle with age and heat cycles, leading to cracks or breaks. Repairing a broken plastic filler neck is often impractical, necessitating radiator replacement, which can be a significant expense.
Lastly, the original Becker radios, while period-correct, are often considered a weak point in terms of audio quality and modern features. Many owners opt for aftermarket replacements for enhanced sound and connectivity.
Like any vintage vehicle, the condition and maintenance history of an 80’s convertible Mercedes significantly impact its reliability and ownership experience. A car that has been meticulously maintained by previous owners is far more likely to provide a positive and less troublesome ownership journey.
The appeal of an 80’s convertible Mercedes lies in its blend of classic styling and open-top cruising. While not designed for high-speed performance, these cars excel as comfortable and stylish cruisers, offering a distinct “old-world roadster feel.” Within the 80’s convertible Mercedes range, the European-specification 500SL and the Euro 280SL, especially with a manual transmission, are particularly sought after by collectors. For those seeking even more collectible models, the 113 chassis SLs, produced from 1963 to 1971 and including the 230SL, 250SL, and 280SL in the US market, represent an earlier generation of iconic Mercedes convertibles.
Regardless of the specific model, it is always advisable to conduct a Pre-Purchase Inspection (PPI) by a knowledgeable and independent Mercedes-Benz technician before acquiring any 80’s convertible Mercedes. A thorough PPI, encompassing electrical, mechanical, fuel systems, and bodywork checks, is a worthwhile investment that can reveal potential issues and provide valuable insights into the vehicle’s condition, ultimately contributing to a more informed purchase decision and preventing unexpected expenses down the line.
