Quote:
Originally Posted by pwogaman
My last two tank fulls were 29.1 and 29.7, respectively. :-)
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Tank fills, are the only way to determine what your car's mpg is IMO.
My '06 E320 CDI's on-board computer registered; "40.1 mpg" on it's maiden voyage from San Antonio to Dallas, Texas. That's the good news. The bad news is that an RT (round trip) to the taco stand .75 miles each way from my home, yields 18 mpg in the car. The city driving is yielding 24 mpg. The moral of the mpg story is that any isolated mpg reading is just that - isolated. Real world, out-of-pocket costs to replenish your fuel tank(s), unfortunately, are not based on your best mpg reading(s). When some joker claims his '99 E300D yields; "43 mpg" here on-forum, I just laugh at it. My same car has never yielded over 32 mpg under any circumstances per tank fill-up. The car is not capable of; "43 mpg." End of story.