Empires fall, cultures morph and fashions change, but throughout it all one thing remains true – the undeniable mechanical brilliance of mid ‘70s Mercedes Benzes. Mercs from this era seemed hewn from granite and over engineered to the point of parody, traits which enabled the company to further burnish its reputation for mechanical know-how. There’s a very good reason why decent examples now command a premium on the classic car market, and an even better reason why these cars remain so sought after in Africa, namely the fact that, this side of a Toyota Landcruiser, there’s little to match them in terms of honest to goodness reliability. 

Mechanical reliability doesn’t mean that mid ‘70s Mercedes models are immune from the passage of time and racking-up of miles however, certainly if this particular W116 S-Class is anything to go by. A life spent dealing with the inclement British weather (and over zealous application of road salt by countless different highways agencies) meant that, while still relatively solid, it had begun to rust and rust with gusto.

The condition the big Merc arrived at Retropower in; complete, running but time worn

The owner had a very set brief when it came to the Mercedes and our work on it; he wanted it to be pristine and standard, as good as when it was first built and sold well over 40 years ago. The reason? He plans on displaying the car within his house, inside a specially created glass viewing area, which is one way of declaring your devotion to Stuttgart’s finest cultural export. It’s also entirely fitting seeing as this car was originally bought new by the very same family back in 1973, meaning it has played a small but significant role in countless family holidays, jaunts and weekend breaks. It’s effectively a member of the family! 

Media blasted and ready to begin the extended bodywork and fabrication step

Getting the car to this lofty standard was no easy task, though it did begin in our customary manner – by stripping it down, then having the bare shell media blasted. This effectively gave us a blank canvass and the ideal starting point from which to begin the process of routing all traces of rot. There weren’t too many surprises in this respect, though it soon became clear that various areas had begun to show their age, the rust most pronounced around those areas and panels which had been repaired at an earlier point in time. The full list of areas requiring attention is on the large side, though key points included the inner wings, bulkhead, headlight ‘bowls,’ the bottom of the A-pillars, inner arches, rear three-quarters and sections of the chassis legs, all of which had seen better days.

The bad news was that key areas of the W116 had begun to show their age. The better news was that we were well placed to sort the issue, and the best news was the excellent parts supply from Mercedes themselves

Restoring a car back to its former, immaculate and standard condition is actually a trickier undertaking than you might first imagine, even with Mercedes’ excellent parts support for older models. That said, the fact that Mercedes continue to cater to cars like the W116 long after they’ve ceased production meant that we were able to acquire certain panels brand new, including the three-quarters, the front valance and the rear panel. Far harder were the alloy trims and brightwork, all of which either had to be sourced New Old Stock or restored back to factory condition – not the work of 10 minutes but obviously essential in terms of its overall appearance.

Fresh metal was added throughout – lots of it!

The engine, the M116 3.5l V8, was an intrinsic part of the S-Class ownership experience, a large, unstressed engine from a time before the mass market adoption of forced induction and when fuel injection (which it has) really did command massive pub bragging rights. There was no question of replacing it therefore, and we instead treated it to a careful strip down and rebuild, because sometimes, just occasionally, the manufacturer really does know best. 

The 3.5L V8 has been totally stripped and then rebuilt from the ground up

The paint is the exact same colour the W116 was painted with way back in 1973, a stunning shade called ‘Alpine Green,’ or as it has since come to be affectionately known, ‘Skinned Kermit Green.’ 

This being a restoration as opposed to a restomod, the vast majority of the S-Class’s running gear had to be retained, restored and re-fitted. This in turn meant the parts, from suspension uprights to hubs and wheels to transmission casings, also had to be media blasted and painted, then carefully checked before being bolted back onto the car. Doing this also enabled us to appreciate the lengths MB went to to make W116 feel suitably special at the time, including the temperature resistant paint applied to the inside of the block and the special tyres created for this, the very first S-Class, by Pirelli.

Reconditioned or replacement parts were used throughout the rebuild

All of this paled into significance compared to the struggle we had trying to restore the big Merc’s interior. You can read more about it on our dedicated blog, but suffice it to say that completing the task satisfactorily was quite a challenge. 

Restoring the W116’s interior was actually one of the trickiest parts of the whole restoration

Now in the final stages of assembly and with a projected completion date of later this year, the W116 S-Class has been among the most comprehensive straight-up restorations Retropower has ever undertake. Click through the images below to learn more about it.

Now painted and with both the interior and running gear in situ, the S-Class will soon be a complete car once again


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