what to look for in a 300 TD? - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 08-17-2013, 05:47 AM Thread Starter
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what to look for in a 300 TD?

I am shopping for a early-mid 80s diesel. What should I watch out for? How can I test for it? Obviously rust is the biggest killer. I live in Vermont but am looking in the DC/Richmond region.
How essential is the turbo? I'm not a speed demon. Do you find it most useful on the highway overtaking other cars or getting off the line in town? If I can do without the turbo that is good because it is one less thing to repair.
Thanks for your thoughts.
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post #2 of 3 (permalink) Old 08-17-2013, 06:50 AM
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Avoid the model years 78-80/81. They have the dreaded Chrysler ACC servo system. Very expensive to fix, and if it fails, you have no climate control.

These model years are non-turbo as well, meaning that you would get a 79 HP diesel. If you're not in a hurry, that's fine, but they are really, really slow as far as acceleration.

Go with an 81 or later. Systems are more reliable and the turbocharged 617 engine is far better.

Inspect the rocker panels around the jack points. These are the weak spot when it comes to rust, and if they're rusty, there is far more that you can't see. It's a matter of structural integrity, so if these areas are rusty the car is questionable at best. Very expensive to repair, and one of those things that once it's opened up, you usually find more than you expected.


Last edited by LWB250; 08-17-2013 at 06:52 AM.
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post #3 of 3 (permalink) Old 08-18-2013, 07:56 AM
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For the W123 model there is a specialised subforum:

W123 E,CE,D,CD,TD,TE Class - Benzworld.org - Mercedes-Benz Discussion Forum
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