I managed 32 mpg in mines and that was keeping with traffic. I think mines had hte 4 cylinder 2.4 engine. I sent off the brain box from the cruse control to get it rebuilt so had that working too. I was a member of benzworld, and purchased parts from the benz bin. Interestingly enough having the local dealer service it was economical too, it just took a few days for them to get any parts for it.
Rooster, since it was a stick shift, I just let the clutch out and stopped the engine that way.