It should point to the left, economy side. It should only move to the red under load. Newer Benzes actually have a guage that reads in terms of MPG. Go to eBay and look at the pictures of dashboards. You will see that the economy gauge is calibrated in terms of MPG. Mine moves all the way to economy when stopped and not under load. Whether your gauge position is a sign of a major problem I can't tell.
1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"
Res non semper sunt quae esse videntur
Not in this weather!