Background
As Bob Dylan opined in 1965 “times, they are a changing.” This was especially true in North America where just a few years later a law was passed making automobile manufacturers responsible for the safety of their products for the first time. This ushered in over a decade of quite draconian legislation in North America covering automotive safety, emissions and fuel economy.
The world’s automotive companies were watching with interest and trepidation, none more so than Mercedes Benz who were starting to consider a replacement for the W113 SL, nearly 50% of which sold in the USA. The new regulations put the writing on the wall for the W113 which wouldn’t stand a chance of passing impending safety or emissions legislation.
Given all this political heat and light in the most litigious country in the world, it was probably no surprise that the new R107 SL was as structurally safe as a contemporary Mercedes saloon. This was thanks to its thickened steel monocoque, boxed sills and a purposely designed reinforced transmission tunnel. Its A-pillars were a full 50% stronger than the Pagoda’s, the fuel tank moved above the rear axle, and crumple zones were created front and rear to protect its very rigid cockpit. Its robust construction earned it the nickname “Panzerwagen” during its pre-launch development.
These robust underpinnings probably also contributed to the R107’s longevity. Its architecture had essentially been future proofed enabling the R107 to be produced for over 18 years with over 237,000 ultimately rolling out of the Sindelfingen plant. This was roughly twice as long as the W113 was produced for and with nearly five times the amount being sold. Not bad for a “Panzerwagen!”







