That's part of the problem for anyone knowledgeable enough with dealing with these vehicles. At this point, flipping the converters and stating it would pass does not say that something else could be wrong to prevent it from passing. Currently, I am dealing with the dreaded check engine light with my 500 SEL (similar engine and vintage), and I am getting into things that I would have never thought possible to get things to the point where the light would turn off and there would be no error codes in the system.

This is worse since you will not be able to get registration without passing the tailpipe test. This is a grey market car, which makes predicticting issues worse. There are very, very few of these around. Even worse is California now requires all older cars to pass the 1996 requirements when replacing converters. You would run into problems using unmodified versions of the converters this car was federalized with in California. This could turn into a real can of worms.

If there was anyway of correcting this presale, I think you would have this car sold. It is a very desirable car. The 500 E was always one of my favorites, and the chance to own one that can compare to the Hammer would be great. If I was in the market, I would not want to risk the tailpipe issues. That would make me shy away from the car, even though everything else is right about the vehicle.

Hope you can sell it shortly.

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2010 Toyota matrix

'93 500 SEL
Well, I sold it. Just got to be too much to keep up with.
First time I haven't owned a MB since 1983.

'12 Volvo S80 T6
Needed something that wasn't as hard to deal with as my bad addiction

'18 Mazda Miata
No more boring cars for everyday transport!