Friend from work owns a 99 civic 4dr ex. He asked what I was getting and i said mid 30s. He said last year he was getting about that and recently he checked his MPG and he is about low 20’s.
I asked if he did anything to the car and he didnt. He just replaced the spark plugs (about 4yrs old) and his MPG is the same. I told him to check tire pressure and his tires are fine.
Im stumped, you guys have any ideas.
I know it could be MANY things but what may be some quick little things to check before he takes it in.
2 things I can think of is a leak in the gas tank or he needs a new O2 sensor
Not that this is the main factor, but I always see lower MPG’s when driving in the winter. It could be a small contributor. Normally I see mid 30’s in my DX sedan. But lately it’s been closer to 30 due to underinflated tires and just going up and down some hills in snowy weather.
yea never thought to ask if he lets it warm up…i would hope he thought of that.
i could see some of these things playing a part in dropping the MPG a little but to drop it around 10MPG is alot.
How would he know if his MAF sensor is messed?
He also said his car has been taking longer to shift when cold. I guess when he is on the highway at 65mph the car will stay in its 2nd last gear for a few mintues then suddenly go into its last dropping the RPM’s
I asked if he calculated wrong and he said no. Its been like this a little while and a few tanks of gas
if you look the 99 5speed only gets around 22/29… so mid 20’s is prob right in the summer and lower in the winter. hes prob right on http://www.fueleconomy.gov/FEG/noframes/14872.shtml… so you looking at less for the AUTO
thanks llink78, thats a cool site. there right about the s2k. I get about 27mpg in it.
For the my 94 civic ex auto coupe they say about 30 but i remember getting 37 at one point, now mid 30s
I wonder if they are watering down the gas now a days :snky:hhhmmmmmmmmmmmmmmmm tighten the belt
I have been getting poor gas mileage with my Accord. maybe 24mpg on the highway. Should be getting closer to 30mpg. It has a 2.4L and has 134k on it. Doesn’t burn a drop of oil, runs great and shifts fine. I don’t know why it sucks gas.