Just wondering what Mercedes gasser made in the last forty years runs on regular. Maybe a 123 230CE does. Even my W111 requires premium. I'm sure technical types can change advance to deal with lower grade fuels, but I'm talking about stock settings.

That being said, I think diesel is artificially inflated relative the the other fuels. It always used to be cheaper, and I get angry when it is MORE than premium.

My 300E 5 speed does a little better on gas mileage than the 300D, and the fintail follows behind at a respectable 20mpg.
Don't even ask about the 4.5, it is mothballed.

Lietuviai, what mpg do you get with that little 4speed? Surely a rare car in the U.S.

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63 220S W111
76 300D W115
2013 VW JSW TDI M6

previously-
73 280 SEL 4.5
86 300E 5 speed
2010 VW Jetta TDI M6