The allure of an 80s Mercedes Convertible is undeniable. These vehicles represent a blend of classic styling and open-top freedom, but like any car of this era, potential buyers need to be aware of common maintenance points. This guide, drawing from owner experiences, highlights key areas to inspect when considering an 80s Mercedes convertible.
One significant point to note, particularly for earlier models like the 380 SL up to 1984, is the timing chain. These models initially featured a single-row timing chain, which was later upgraded to a more durable double-row version. Retrofitting the double-row chain to older models is a considerable expense. Even with the updated double-row chain, regular maintenance of guides and tensioners is crucial, though less costly than the full conversion.
Suspension components are another area of focus. Due to their substantial weight and the passage of time, expect to address suspension wear. This often includes replacing shocks – Bilstein is a popular choice – subframe bushings, ball joints, and potentially springs. Neglecting these can significantly impact ride quality and handling.
For models from 1981 onwards, the Bosch CIS fuel injection system is standard. While robust, CIS systems are known for developing cold, warm, and hot start issues over time. Troubleshooting these problems can be complex and costly, often involving methodical diagnosis rather than simply throwing parts at the issue.
The climate control system in 80s Mercedes convertibles is notoriously intricate, often described as unnecessarily complicated. These systems are vacuum-operated, with actuators located in difficult-to-access areas behind the dashboard. Vacuum leaks and actuator failures are common, leading to issues like inconsistent heating or cooling. A frequent culprit for sudden heating problems is the monovalve, a relatively inexpensive and easily replaced component in the heating system.
Rust is a concern in older vehicles, and 80s Mercedes are no exception. Pay close attention to areas like headlight buckets and the lower sections of doors. Remember that visible rust is often just the tip of the iceberg; the adage “what you see times ten is what you’ll need to deal with” is a good rule of thumb for estimating the extent of rust repairs.
On a brighter note, the convertible top mechanism is generally well-designed and mechanically straightforward. Similarly, the hardtop is robust and well-engineered. A DIY winch system can be a helpful addition for hardtop removal and storage.
Interior condition can vary. Dash cracks are a known issue, with blue dashes seemingly being particularly prone to cracking. Radiators, especially those with plastic filler necks, are also potential weak points. Cracked plastic filler necks are difficult to repair reliably and necessitate radiator replacement. Finally, the Becker radios of this era are often considered a point of frustration for owners.
As with any vintage vehicle, the prior maintenance history is paramount. A well-maintained example will invariably be a better purchase. While not sports cars in the modern sense, 80s Mercedes convertibles offer a classic roadster experience, particularly the European market 500SL and manual transmission 280SL models, which are highly sought after. For collectors seeking even earlier models, the 113 chassis SLs (230SL, 250SL, and 280SL) from the 60s are highly desirable.
Ultimately, a pre-purchase inspection (PPI) by a qualified independent technician is invaluable. A thorough PPI should cover electrical, mechanical, and fuel systems, as well as a body inspection, providing peace of mind and highlighting any potential issues before purchase.
