[GJKH]

Originally Posted by jeff.decker

Just turned 10,000 miles in my 2018 Honda Civic Si
(1.5 liter 4 cyl turbo)
Averaging 43 MPG over that whole 10,000 stretch
driving like a granny, premium gas, mainly fwy commute
but includes about 2000 city street miles and a few canyon runs

Drove a 2009 Honda Si for 250,000 miles before this
and never got better than 38 MPG over a 10K stretch

excellent