I would agree with Haasman. MB seats are usually considered very good but after many years and high mileage they will obviously suffer wear to padding and springs.

I find the seats (MB-Tex) in our '90 300TE to be extremely comfortable, even after 14 hour interstate journeys we often travel. The driver's seat does have the pneumatic orthopaedic option though which can be altered throughout the journey.

I find that getting the seat correctly adjusted is important. On the first long journey I travelled in my '90 190E Sportline, I initially found the seat uncomfortable. After continually fine tuning the adjustment, I found a position that was comfortable. Now after journeys of up to 8 or 10 hours in that car, I find the leather Sportline seat comfortable. With that car now showing 230,000km, I do notice the driver's seat has settled more than the passenger's seat. I have considered the possibility of switching the front seat cushions to even the wear. Does anyone know if that is possible on a W201 with manual seat adjustment (ie. without electric seat adjustment)? This is probably the topic for another thread.

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107.023: 350SLC, 3-speed auto, icon gold, parchment MBtex (sold 2012 after 29 years ownership).
107.026: 500SLC, 4-speed auto, thistle green, green velour.
124.090: 300TE, 4-speed auto, arctic white, cream-beige MBtex.
201.028: 190E 2.3 Sportline, 5-speed manual, arctic white, blue leather.
201.028: 190E 2.3, 4-speed auto, blue-black, grey MBtex.
201.034: 190E 2.3-16, 5-speed manual, blue-black, black leather.