my bandit

iTrader: (10)

ive never had this bad of gas mileage... i did exactly what you should to calculate the mpg and came up with 17?!? i did 70% highway (~65-70mph) and 30% city. what the hell is happening. none of my dash lights are coming on telling me something is wrong. the car just hit 134k miles. ive gotten 26mpg's straight highway going 75-80 before

blue98Z

iTrader: (29)

You probably just need a minor tune up. Clean the MAF, fuel filter, plugs and wires(depending on mileage of current ones), O2 sensors can also cost mpg's even if they're not tripping the SES light.

zracer323

iTrader: (12)

Agreed...start with the basic stuff before you start worrying

Adam2001WS6

iTrader: (1)

That was about what I was getting before I replaced the exhaust and got a tune.

Brandon35thSS

+1 on the tune up. my car (mods in sig) gets 20 mpg around town and thats not babying it.

SOMbitch

iTrader: (8)

Yeah look at the easy stuff first. Start with the MAF. A bad tank of gas can greatly affect MPG too. Try another station next tank....

my bandit

iTrader: (10)

i was running premium, the maf is clean. i just sprayed it last week after i polished the outside so nothing was hurt with that. im hoping i can get my headers on during thanksgiving so that will be the sparkplugs and o2 sensors along with a tune and havent checked the fuel filter

Z28_LT1

iTrader: (2)

How much are you getting per tank?

02 BLK WS6

iTrader: (11)

My car has gotten a best of 20mpg nothing but highway. Single digits in town.

gta3uzi

You don't count.

I get around 17-18 in town and will get 26mpg going to Pensacola, Florida with the girlfriend and all of our **** in the car. I'm 100% stock except for a BFH cat delete and I have the factory 3.23 gears.

I did do a small tune-up (plugs and filter) in the Spring. I also did the crankcase / vacuum line / gas tank seafoam treatment at work one day around that time and will occasionally dump a bottle of seafoam in (1oz per gallon of gas) when I fill it up.

I don't know if this helps or not, but there you have it.

my bandit

iTrader: (10)

i got ~245 on the tank and it was like 13-14 gallons i put in

sjsingle1

iTrader: (1)

i was getting 23 HWY.......but now my O2s have tripped a code and i am getting 20

Z28_LT1

iTrader: (2)

That's about on par with mine. Maybe mine needs a tune up too.

chapmansZ28

iTrader: (1)

well im the same i was getting 24 on the highway... but i put the LT's on and didnt extend the o2 sensors yet... my bust so now im getting about 20 on the highway and like 15 in town but thats just cause im lazy and havent put the car in the air and extended them yet

thunderstruck507

iTrader: (18)

how did you calculate? hopefully by filling up and topping off then recording mileage then filling back up and topping off

RS777

iTrader: (1)

Did you just spray your MAF before this issue arose? Maybe you damaged it or something? The car run good/smooth still? When stuff like this happens, its best to start at the last thing you did and work your way back (especially if it was fine before). Normally you'll figure it out pretty easily that way.

Joshiedoom

iTrader: (4)

If you drive the highway these things can get up to 26mpg through an a4. Which I am currently getting.

Do a full tuneup

WSsick

iTrader: (13)

On an absolutely full tank, run to E (mine will go a little past E), I got like 350 miles...so I even had maybe 20-30 miles left in it. I do a lot of highway driving, but I have gears too. I also beat on it a fair amount. When I bought the car and drove it home (bone stock with 3.42s at the time) I got 30mpg on the way home, all highway with some romping on it and a race or 2 with a cobra.

TooLateVTEC

iTrader: (2)

Check tire pressure.

A low tire/tires will kill MPG's like no other.

my bandit

iTrader: (10)

i filled it up until the pump stopped, i didnt add anymore to get it to become like an even dollar, ran it out, then did the same thing and took my mileage and divided it by the amount of gas for the second fill up