poor gas mileage
 

I purchased an Elantra in October 2005. The car is great except for one inconvenience. The amount of gas I get has been quite poor. I am only getting 19MPG as an average while driving. My question is if I am just doing to much start and stopping or is this a true indication of the mileage.

Or could it possibly be I am using the lowest octane rating.

RE: poor gas mileage
 

Hai ... i also just a used elantra A/T 1997.
It seems that the car is poor in gas consumption.
My car take only 1 : 6to7 (KMH : L) gas.

Or any one have the clue how to get more efficient gas conpsumtion?

RE: poor gas mileage
 

You could always check your air filter and make sure that its not dirty because that could cause poor gas milage

RE: poor gas mileage
 

i did already do the check on my air filter. It's just fine. But still doesnt have any changes on the fuel consumption.

Some of my friends suggest me to do machine porting and polishing. Any one help me please what is that? and will that do some changes on the MPG (fuel consumption)?

Thanks ...

RE: poor gas mileage
 

I'm really suprised at reading your low mileage. I thought the smaller Hyundai cars would get better mileage than that. My Azera is getting almost 25 mpg in the city, and on the local highways, 36.4 mpg [that suprised me!] The sticker said much lower. I found that keeping extra weight in the car reduced my mileage somewhat. Do you have a lot of things in your trunk? Do you have your tires properly inflated? I actually keep my tires at 31 instead of the 30 they are recommended to be at ... but still ... you folks should be getting better mileage. I would almost contact Hyundai America and question them. Jeeze ... it needs to do better for you!

RE: poor gas mileage
 

I use 87 octane from the cheapo stations [like gas is cheap anywhere?]. I don't see where the low octane is the problem ...

RE: poor gas mileage
 

The outgoing generation of Elantra has a relatively old design (introduced in 2001) and the mileage isn't quite up to some of the newer models. The Azera and Sonata get about the same mileage as the Elantra.

My AT 2005 Elantra is rated at 24/32 mpg. In about 12,000 miles, I've gotten a max of 35.0 mpg and a min of 22.4, for an average of 26.5. On a recent 1800 mile trip to pick my son up from college I averaged 32.2 for the trip, and for half of it the car was loaded like this:

http://i42.photobucket.com/albums/e3...kie/Loaded.jpg

RE: poor gas mileage
 

I'm not trying to rub it in your face or anything but i've gone through 4-5 tanks in my used 2004 since I recently bought it and the worst i've gotten on a tank was 32.5 mpg.

RE: poor gas mileage
 

Have you asked your dealer to check the vehicle for you. If you have a problem in the vehicle gas mileage will drop.When I have a customer complain about fuel consumption I do the basics.Check tire pressure,air filter,when was the last time they changed their plugs.How about the fuel filter? I also look at the pcm for any codes and check the long term fuel trims.If long term fuel trim is out of spec then you have a problem. And last yes the octane does help on gas mileage. That is another discussion in itself.As for that guy trying to sell that additive.HAHHH I dont think so.

RE: poor gas mileage
 

Pleasechange your o2 sensor

RE: poor gas mileage
 

my elantra is a 99 with 230,000 miles and i average 32 mpg but on a trip straight highway is 37 with a/c on and windows up.
how many miles are on your car? what condition are the tires,spark plugs and air filter in?i keep my tire pressure at 34psi and change my plugsevery 15000 and i change the wires every 60000 along with the timing belt. if your timing belthas not been changed that may explain some of the mileage loss (but very little i might add) but to be honest it is moslty due to driving habits if everything else is ok. ive worked in several dealerships and lately that has been one of the biggest complaints. ive heard most of these when i worked with honda they boast high mpg but have had people with hybrid civic 4dr only get 34 reather than posted 48 and it alway came down to driving habits. the best way for me to explain how the hybrids needed to be driven is to drive like there is an egg on both pedals and dont press hard enough to break it. gas milage is also affected be how hard you brake as well as accelerate. i also use Lucas oil stabilant in my engine and for me i do see an increase in mileage when i am using it and i also use the cruise as much as i can. my wife told me as i was driving one day that i do not hold a steady speed. i had no clue i did that! so now i use the cruise, i would have someone ride with you and see if they notice any thing that you may be doing and dont realize it. that is also affecting your gas mileage. that way you will know for sure. i hope this helps

RE: poor gas mileage
 

That's great mileage! What kind of driving? Mixed? City? Highway?

RE: poor gas mileage
 

my mileage is from about 60% highway and 40% city my wife uses the car for work sometimes delivering pizza and the mileage stays at 32mpg unless she does a lot of city driving it drops to 28 or 29mpg i check it on every tank fill and the car as 230,000 miles on it currently the car is down now due to a leaking head gasket (the first gasket needing replaced on the engine) other than that this car has been driven everyday since i bought it new

RE: poor gas mileage
 

Is that from the trip computer or have you calculated it based on amount of fuel pumped versus miles driven?

RE: poor gas mileage
 

my fuel mileage is baised off of miles driven and gallons pumped i use the tenth mile and tenth gallon numbers becasue i want an accurate number to go by like 330.3 miles and 10.4 gallons would be 31.75 mpg and that is an average tank fill up gallon and mileage number that was actually my last fill up

RE: poor gas mileage
 

Wow. That's outstanding.

RE: poor gas mileage (2006 Auto GT)
 

my 2006 automatic GT yields terrible city mileage (according to computer).... it used to be around 18/19 MPG city and now, at about 4000 miles, its down to 15-16. I've gotten 30 MPG on long highway drives, going 60+ for hours, but when it comes to city / suburban driving (some in Manhattan NY and some in the boroughs which involve a little less idle time and 3-5 miles of highway speed now and then) - mileage craps out. This is true even if I do not ride the gas and avoid breaking...i.e. do all reasonable to maximize momentum, etc... and without AC/Heater, no extra weight either. My tires are a little low (i.e. the spec 32psi) but I can not believe it should be this bad. I use premium gas, because 87 feels a little less powerful off the start. Car runs fine and already had 2 oil changes (at 1K and at 3K). I just do not believe people get 26+ city with an automatic from this car... anyone with an '06 care to weigh in? Advice appreciated. Thank you!

PS - hello to some familiar names from the GT forum (w. Mitch) ... I know that one was down, so I am seeking help here
I have not posted there for about a year (i.e. after I got used to my new ride, stopped posting/reading)... but now that gas $$ is tight, I am starting to get bummed about this and want to figure out if its just us (me and my GT) or everyone else too that have crappy city MPG. Thanks!

RE: poor gas mileage (2006 Auto GT)
 

You would be surprised how much increasing your tire pressure helps. I bought a set of GT rims for my GLS; they happened to have 225/50R15 tires on them (over an inch wider than the stock 195s). My mileage plummeted- from nearly 30 mpg to less than 25 mpg overall. I started overinflating the tires a little (up to 37 psi) and my mileage is getting higher again- 27+ on my last tank, although that involved a little more freeway than usual.

But it could be all the stop and go traffic is killing your mileage too.

RE: poor gas mileage (2006 Auto GT)
 

I have an 05 GT that has over 46,500 miles, live in a city thats got more hills than you can shake a stick at, and I still get right at 30mpg in the city.

Regular maintenance, tire pressure, and driving habits are what I find make the difference. By the way, I use the lowest octane gas, as its the cheapest.

2001 Ellantra 2.0 5spd 33 -34 combined actual
 

Something is wrong. AT'a are a little more gas demanding compared to manuals but not as bad your saying.

Clean Air filter
Clean oil and filter
clean injectors
Max tire inflation
change out O2 sensor

Speed check (?)
I try to keep my rpms at 2500 or under 60 mph when in high gear and I drive 124 miles a day round trip mostly secondary roads some stops, some hills, mostly high gear driving.

If everything is fresh you should be doing much better and I'd be seeing a dealer. Possibly the catalytic converter (depends on the miles on it I'd think)

Go to pure-gas.org for addresses & a great zoomable map for the nearly 5000 stations selling 100% ethanol-free gasoline. Sounds like a lot, but ony about 10 in every 350 stations sell 100% ethanol-free gasoline. After switching to 100% pure gasoline, our 3 cars increased their mpg by 8%,7-8%, & 6%. The 3 engines are smoother, quieter & don't need shifting down as much, while ascending hills. You may pay more for it, but I get gas at an excellently priced 100% gas station at the 2100 block of Broadway, Everett, WA, which sells for only pennies more than the cheap Arco 10% ethanol gasoline.

45 mpg today in 2012 Sonata SE mix of urban and highway in Buffalo. Same last month mostly highway in Canada. Eco off (always slightly WORSE with ECO on !). I drive at speed limit when I can 55 in NY State and 60 in Canada.