I've been the original owner of a MB 300TE 4Matic wagon for a very long time...'92. The car cost me $63,000 new, so I paid the price of admission for the marque. Today's dollars that would be way over $100,000. W124 and W126 series were the hallmark of Mercedes engineering. Hailed as the 'over-engineered' series, they spared nothing in their manufacture. Other car companies followed/copied their new safety standards and innovations for over a decade after the series. Even today they are expensive to maintain & operate...especially the 4Matics. But the upside is that you can find one for next to nothing. Few drove on the hwy like those E and S class cars....that was the allure. They had real soul. The Lexus and Infinity cars were reversed engineered;the Japanese took the world's best luxury cars apart piece by piece and designed their cars around existing platform & innovations. They can be great cars to drive/own, but they have no soul.
On the downside to that great series...around '92 the Germans introduced a biodegradable upper, lower and ETA wiring harness. This has plagued these cars ever since. The wire insulation virtually disintegrates. My car would have had it, but the 4Matics retained the older engine harnesses and were dropped altogether from the series after '93. All the E class cars that had the bigger, more powerful M104 engine had faulty harnesses along with the V8 400E420 series and the 'muscle' sedan 500E500 cars from '92 on. They didn't produce a good harness again until '98. Other than being eco conscious, you have to wonder what they were thinking. In typical MB fashion they tired to get their customers to foot most of the repair bill. Never a company to acknowledge consumerism...unless you paid for it.
Since the W124, W126 series, MB has been on a steady slope of decline....especially with the affordable C class. The newer cars have an average of 46 onboard computers. They are not cars you can shade tree, their failure rate is high and the bean counters have made sure they don't have the longevity of the older series. Sad story for a once great car marque. The series after the W124, the W210, are OK cars, but nothing like the W124 build quality. They too are affordable now and are still decent cars in my opinion.
Kevin
[this post was last edited: 9/20/2016-11:39]