[NY2002ElantraGT]

yea i get like 380 miles out of a tank, but i drive like 80mph on a regular basis

 

[Silentwolf]

Interesting. I wonder if mine might be too tight cause more brake dust is appearing on the rear rims than on the front.

This may be a long shot, but it helped with my cars fuel economy (05 Elantra).

My rear brakes (disc type) wore out at 60,000 miles. This is the first car I have owned that used up the rear brakes before the front ones needed to be replaced. When I replaced the pads, I noted the parking brake was adjusted too tight.

Had to take the center console loose (six screws) and adjust the parking brake cable. It’s easy to do. If you have the right kind of wrench, you may be able to adjust the cables through the hole in the storage compartment at the rear of the console.

The nut you loosen up is against a bracket that connects the two rear parking brake cables to the front cable attached to the parking brake handle.

After loosening up the parking brakes, went up to 38 mpg from 33.

I drive 100 miles a day, with 80 being on the freeway, and 20 in town driving.

With my last tank of gas, went 500 miles before low fuel light came on (around 40 MPG, drove at 55 on the freeway all week)..

Good luck……

 

[BobMs_wht2k2]

I grab about 350 miles a tank and i drive about 75 miles a day 60 hwy 15 city sounds like i need to do some work to stretch my gas out.

The CVVT cars hae an unfair advantage on us.

 

[saturn]

I get 23.1mpg

note: manual trans, and I drive like I stole it

 

[quickfingerz]

This week: all city driving - 24.1 (Just moved to Sacramento)

When I had a 25 mile commute - 31.5 mpg

 

[fone]

I'm having 11 mpg nowadays, will bring it for "repairs" soon as I'm not sure what caused the problem. I have a check engine light on, but I'm sure its just the fuel tank pressure (light goes out when fuel is low)

 

[Elantra87]

i have a 01 and my gas mialage is the same way, i need a new o2 sensor and a oil change badly

 

[hyunelan2]

Alright. I was just getting ready to make a post, but since this one is on top, I'll add to it. I've been getting increasingly ****ty mileage, and at today's fillup was 23.4mpg. I do mostly city driving, short trips of 7 miles 4x a day - so that's expected that the car will not be warmed up and efficient. This time, I had about 75 miles of interstate driving too, so it should be better. I'm usually in the 26-28mpg range, but have been on a downward slide.

I've also been noticing that the car seemed a little "bogged down" occassionally, like it was slightly overfueled. The car has 64K on it (2002 GLS A/T), plugs and wires were replaced at 56K. Plugs are NGK Copper, wires NGK. Air filter is K&N drop-in panel, cleaned about 10K ago. I was thinking of getting a new set of plugs (better than NGKs bottom-end plug) and maybe throwing an OEM air filter on and seeing what happens. Any other things I'm not thinking of? My fuel filter could probably use replacing, but I'm not sure that would lead to poor mileage and what seems like minor-overfueling?

 

[mlumz]

i know a lot of people have said that a bad o2 sensor can lead to the low mpg and not throw a code. I've dropped mpg but gonna wait till after winter and see if it improves.

Basic list for mpg: driver lead foot, spark plugs/wires, fuel quality, 02 sensor, tires

 

[hyunelan2]

Basic list for mpg: driver lead foot, spark plugs/wires, fuel quality, 02 sensor, tires

In my case:

driver: fine
spark plugs: questionable, not very old though
wires: fine
fuel quality: have tried different stations and brands, no difference
O2 sensor, unknown - is there an easy way to check it without special tools?
tires: brand new

 

[BobMs_wht2k2]

He means "tires" as in proper inflation.

 

[hyunelan2]

So get this. I'm on my way home to lunch and I decide to mess with the fuel mileage - I have the tib multigagues so I can see current fuel consumption in L/100KM. I set the cruise on flat level ground, going 45mph. Consumption = about 9.5 L/100KM (24.75mpg). I turned off the defrost. Consumption = about 6.5 L/100KM (36.18mpg).

Now we all know that running the defrost runs through the AC system. AC lowers gas mileage, but by 12mpg!?!

I repeated this test several times, turning defrost on and off and watching the needle bounce between the 2 points steadily. This could explain why it seems as winter goes on, I get worse mileage - I've been using defrost more.

I know a lot of you will say just turn off the AC button, but it doesn't work like that on my particular car. When I turn the defrost on the AC button doesn't light up, and pushing does not change anything (engaging or disengaging of the clutch on the AC). My old HVAC did work like that, but this one (I put LEDs in a second unit from Ebay) does not.

Opinoins, thoughts, suggestions?

 

[BobMs_wht2k2]

Damn. . . . must suck to be you.

:abovelol: Sorry, I got nothing. You might check for southpaw's DIY's on EClub. He used to have a DIY on making the A/C a manual override thingy. I think my car is the only one in the US that came from Korea wtih the deactivation built in.

 

[7new.names]

my girl's car's got 42k miles and an auto.

lots of A/C usage due to summer heat. but after a full fill-up, it did only 118 miles when the guage is at the middle mark. are Elantra's fuel guage very accurate?

i just did the plugs, motor oil, reset computer...think the air filter was done last year.

what next....fuel filter? (where is it?) thanks.

Yeah, my 2018 is getting about 11 miles to the gallon! With gas at $5 a gallon, I need an answer!