Is it me or just the way of the car. But my 03 TL type S seems to consume the hell out of gas like no tomorrow. There is no gas leaks or any mechanical problems of that nature. It feels like it only gets like 12 mpg. Now thats BULL S#!T.Does anyone have the same problem and if so did you do anything to fix it? Any suggestions will help.

 

Feels like it only gets??? Is that actual or havent you actually done the math? Is that all city or hwy? 87 or 91? when was last tuneup?

 

I haven't actually done the math. I'm probably exaggerating a little but i do know there is a significant difference in the fuel consumption then from when i first got the car.

 

winter fuel is a lot different then summer fuel man i run 330-350 km per tank a week!!! i got so pissed off, summer time i run 450-530 km its what they put in the gas in the winter to help the gas from freezing

 

I've been thinking the same thing....I only use Chevron 93 octane, seafoam when necessary, and keep up with maintenance. Still though, my mileage as of late has been horrendous.

 

Until you calculate the mileage (driving as you typically do, where you typically do), it's just a guess-

Have you checked the usual things, such as tuneup (mentioned), tire pressure/condition, air filter, etc.?

 

buddy i got the same problem, ive changed my spark plugs to iridium NGK , changed my air filter ..... and my fuel consumption didint change .... now i switched to sunoco ultra 94.. lemme see how that comes along....

if things dont get better im gonna clean the EGR valve.... looks like im running out of options to increase fuel consumption my self

 

I have the same problem so I changed plugs, air filter, ran a bottle of injector cleaner, nothing helped so I started driving super slow everywhere I go, it's time to trade my 03 in for something new

 

My 2002 TL-S still gets like between 23-24 mpg and I have 163K miles on the car. The dealer did adjust my engine valves one time and he said that would increase my mileage a bit.

 

i fill the the tank twice almost every week and a half. but i get about 340 miles. thats filled to the top and right before the gas light comes on.

 

Well guys, I cleaned my EGR port, entire IM, TB, etc...Ran a bottle of fuel injector cleaner, lubed up the throttle cables, etc on Wednesday night. It took a few hours to get everything done, I don't know if we were just working slow because it was the first time, or we just were very attentive to all the details.
Anyways, I drove a bunch since then, and my mileage seemed to improve a lot....But, when I fill up next, I will keep you posted with my lileage.

 

i use mymilemarker.com to track my mileage...

usually about 15-18 if doing mostly stop and go
took it on the highway regularly for a week (~17 miles hwy and ~5 miles stop and go each way) and got about 28-29...but there was a brief period of extended WOT in there

 

hey try some gumout with regane... works wonder's for me