QuestionI've had my 1998 v70 for about two weeks now. The first week I
used up the gas in the tank that the dealer put in and I noticed
that I got around 22 to 23 mpg. Then the check engine light
came on and I took it back to the dealer. They said that it had to
do with the barometric sensor so they replaced it with a new
one. Then I refueled with mid-level octane grade fuel and
noticed that I am currenlty getting 13 to 15 mpg from mostly
city driving (New York City/Brooklyn). I've taken it to an
independent shop and they've told me that everything checks
out very well for the car (77k miles on it). My question is this: Is
there a chance that the new barometric sensor has anything to
do with the mpg change? Or could it REALLY be the difference
between driving a little more highway during the first week?
Or is there anything that I should check? Could the spark plugs
have gone bad? If so could they affect mpg so quickly?
Answerhi city driving you get about 13-17 mpg and highway about 22-28 mpg barometric sensor was bad but they go bad at times it will not change you fuel economy so much ,your fuel milege economy on v70 is
normal ,you were readin the trip computer right for milege efficency?
you can't trust the trip computer on dash 100% best when you have full tank than reset the milege on trip computer and messure how many miles you get to empty the tank than divide milege by fuel gallons and you get mpg
