ok CL i did some searching and couldnt find answers only debates lol
i have a 99 gs300 with stock motor
im gettin right about 15mpg which is problem 1.....i know thats bad for a 3.0l sedan
problem number 2....fuel light comes on and i run out of gas way too soon....like right under 1/4 tank
that happened beginning of the year though....i fill up before i get to 1/4
i put 15gallons last time and only had 221 miles
main concern is the milage
2nd concern is why gauge is acting like that
i remember readin long time ago about it not being the fuel pump but its a secondary jet or pump in the fuel line....but cant find that same thread again

thanks in advance

 

1. GS don't get that good of mpg. Could be better by your driving style.
2. The light suppose to come on around 1/4 to warn you. You can drive an extra 30-40miles before you need to fill.

I have a 430 and i'm getting 18.6 mpg with a light foot.

 

I'm getting around 22-23 mpg combined, city and highway. I wonder if the car is screaming for a tune-up?

 

lucky you man, i'm getting anywhere between 16-18 mpg in a 2000 gs300 stock with 186k. any advice on how to get the mpg more towards your range? aside from usual tune up tips and having a light foot?

 

wow thats what im trying to say....15mpg is not RIGHT....idc who says GS dont get good milage.....i would expect about 19-20.....not 15!
yea what advice do you have?
lite foot i get same milage.....i barely get on it actually=/

 

I was easily getting around 21-23 MPG in my stock GS for the longest time (mileage between 150K-190K), however!!! Now i get around 15-16, WTF?

 

im getting about 13-15mpg city driving in 430 (short trips) and 25-28mpg highway
im gona clean maf, TB, seafom, change spark plugs and fuel filter and see if it helps

 

wow please keep us posted on results chicov8

af1c331 exactly my point....its just not normal and gotta be a way to fix this but seems normal tune up doesnt do it.....your fuel gauge off as well?....mine runs out of gas before it gets to E....id guess a lil under a 1/4 tank

 

Dee... When did u have a tune up and what did that consist of? Cause honestly thats the first thing i'd do. How u drive is a factor but what ur driving is the biggest. Cant run a mile under 6 minutes with beer and hot links if u know what im saying. **** has to breathe right... The car has lungs bro urs seems lower than normal to say the least.

Thats like drivin a lifted truck chipped

 

What kind of driving do you do ? City/hwy ? I do half n half and I'm getting 20 + mpg on my 430. I know I read somewhere on here about gas gauges not reading right, I think it had to do with people replacing the fuel pumps and some how messing up the hanger assemblies can't exactly remember

 

right before i got in the office, i just checked to see the mpg lol im getting an astonishing 11.3!****!!!


YAY!!!

4.3 v8 hence i dont expect much "fuel economy" anyway lol.

 

01 GS3 w/ around 134k here, driven on the weekends mainly and sometimes during the week.

I usually cover around 500~550km on one tank (level to bottom of gauge), so about 11L/100km or 21~22mpg in your speak

 

I get 19-22 mpg on my gs430. 60% highway

 

~20 is the normal combined mpg if you drive freeway a lot. thats what i get boosting it here n there.

check your gas tank floater n see if its still good maybe?

 

Any updates on this?

I have a whole thread dedicated to this same problem!! All of the sudden my MPG is down a little more than 10%....

https://www.clublexus.com/forums/gs-...-pls-help.html