In Addition to what psfred said- if it's a '92 it'll start in 1st. Both 103 & 104 powered cars I've driven are a bit rough shifting until warmed-up.
It should still have the 103 12v engine- check for head gasket leak! Take off the radiator cap and peer in- should be clear with no trace of oil. If there is walk away or take $1800 off the price.
The TE is a nice tank...

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1993 320TE M104
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past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
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"music and women I cannot but give way to, whatever my business" -Pepys