How full the tank is at each gas stop has an effect too. Only robust
statistic is at the end of the year with twenty or so samples, and many
thousands of miles. bob
Brian Smith wrote:
>
> "Dave Thompson" <dthomp@hotmail.com> wrote in message
> news
1F9b.25215$kX.13813@twister.tampabay.rr.com. ..
> > I have 1000 miles on my civic
> > my first 2 tanks were about 25 mpg
> > then on my third I had 700 miles on it and i got
> > 30mpg now on my fourth tank 1000 miles it dropped back to 26mpg. all of my
> > driving is simular about half city half highway nothing really different
> on
> > any givin tank
> > is this normal? is my car not truly broke in yet and should I expect to
> see
> > this? when it shot up to 30 I thought the rest of my tanks should only get
> > better.
>
> There are a lot of variables involved. Was the weather the same (wind speed
> and direction, fair weather or rain)? Proper tire inflation needs to be
> maintained, as well. Just a couple of thoughts.
>
> --
> Brian
> www.accesswave.ca/~orion