MPG refers to "miles per gallon" so it means - how much miles can a car pass
with using only one gallon of gas.
about LPG - lpg is pretty safe and cheap to use and maintain, the only
problem is, building it in is pretty expensive, plus, it dries out your
motor after a couple of years, so it reduces (wild guess - 10%) of your
motor life span
Hmmm, can't say for the newer 7 series but my 1992 730 regularly returns
28-30 on the motorway (cruising at 70-75mph with the odd sprint above
that). Around town it's less frugal and averages about 18-20. If I'm
feeling enthusiastic I can get it down to 14, or so, maybe less if very
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