W211 economy vs W212

[tali]

212 has a very low drag co efficient. The newer engines will help as will the slippery body shell

If you look at the link i posted earlier 212 fares rather badly
Plenty of cars from 80s have low drag - does not make them super magic economical

 

[st4]

If you look at the link i posted earlier 212 fares rather badly
Plenty of cars from 80s have low drag - does not make them super magic economical

Should help. Less wind resistance, lets work needed to move the car along so unless there's an uneconomical engine lurking should do well