You do not list your location, so I am assuming you live in the US. This car must be federalized and have letters of acceptance for this work from the EPA and the DOT. Do not buy a car without these papers.
The other item that strikes me is the 2.0 liter model's engine was not brought over here in any US Mercedes-Benz auto. This makes it a candidate for the nightmare stories you will find if you do a search on "grey market" on this site. If you are looking seriously at grey market vehicles, you should be choosy about the model you select, and avoid cars with transmissions, engines and body styles that were not imported in any US models. This is kind of wordy, but I would avoid a Euro 190 that did not have an engine that was either a 2.3 liter fuel injected 4 cylinder, or a 2.6 liter fuel injected 6 cylinder. I would take a 300E with either of these engines (likely called a 230E or 260E) since parts for these engines are probably available from the US 190E or the US 260E. I would personally avoid any car that must meet emissions testing by the local authorities that has a carburetor.
I hope this helps, but do some research on the site for grey market cars to get a good background on the problems you can encounter. I have been very meticulous about the cars I have imported (back in the mid 80's) and all were strong performers, lasting well over 150kmiles without any significant out of the ordinary maintenance. And all of that was supported by the US equivalent model engine and chassis (often not on the same car) parts inventory available at the local dealer.
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)