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Hyundai Elantra Real World MPG

295 messages,  Last post on Aug 14, 2008 at 3:30 AM

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What is this discussion about? Hyundai Elantra, Fuel Efficiency (MPG), Sedan


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#246 of 295
Re: 2007 elantra gls [bwaller78] by gary045
May 02, 2008 (3:39 pm)
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Replying to: bwaller78 (Feb 17, 2008 1:40 pm)

I found not all gas is created equal. On my 2,400 mile trip I got gas at a run down crummy station that didn't even have a bathroom that worked, they said.
 
Anyways, their gas gave me 31.4 mpg. It was the worst gas out of 6 fillups. All other fillups got me 37 to 39mpg at well kept travel stations.
 
My low fuel alarm comes on after using 12 gallons and 444 miles went by at 37mpg with 2 gal left in the tank.
#247 of 295
Re: 2007 elantra gls [gary045] by bhmr59
May 03, 2008 (3:14 pm)
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Replying to: gary045 (May 02, 2008 3:39 pm)

Could your lower MPG fill up haven been ethnol vs real gasoline at the other places. Unfortunately we have ethanol year round here (10%) and it does cost about 10% difference in MPG (10% difference is probably a coincidence) but it does cut MPG.
 
Remember following Katrina, there was a temporary lifting of the blending requirement. That was all about ethanol and designed to get more MPG where fuel deliveries were tight.
#248 of 295
Re: 2007 elantra gls [bhmr59] by gary045
May 06, 2008 (6:56 am)
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Replying to: bhmr59 (May 03, 2008 3:14 pm)

Yeah, there's no telling what kinda gas or where it came from. The station was in Mississippi in very poor shape with overflowing garbage cans and no credit cards only cash.
 
One more point on the 70 mph long trip my oil stayed on the full mark during the whole trip. Years ago I used to have to carry an extra qrt or 2 in the trunk for my chevys.
So that's a pleasant change to have a well built engine.
#249 of 295
08 SE 5spd, first month by mort4371
May 14, 2008 (4:23 am)
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So far, so good. Considering the engine is still likely a bit tight, I'm pleased. I drive about an equal thirds split of rural, 'mile-between-stopsigns' back roads, highway, and moving (non-gridlocked) city traffic. Average speeds on the trip computer are generally 34-35 mph when I fill up and reset.
 
After three fillups, 34.9 gal total, I have 1122 miles on the meter. Average of 32.16 mpg over my first thousand (plus a few) miles. A/C will likely knock it down a smidge this summer, but engine loosening up might help a bit. I'll report back in a few more months.
 
Also, for what it's worth, my trip computer seems to be pretty close in terms of indicated mileage versus what I'm actually getting. I've heard that some are not.
#250 of 295
Re: 08 SE 5spd, first month [mort4371] by bhmr59
May 14, 2008 (4:55 pm)
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Replying to: mort4371 (May 14, 2008 4:23 am)

Your milage calculation compared to the computer's calculation is pretty close because you are looking at over 1100 miles in you comparison. Shorter comparisons of 200 or 300 miles will show a greater difference due to rounding errors in # of gallons.
 
Like any analysis, the larger your sample (number of miles & gallons) the more accurate your calculations will be. Funny that so many people distrust their trip computer based on a test of a couple hundred miles. Think of the difference in the calculation if the fill-up is off by only 1/4 gallon for 200 miles. The computer measures the amount of gas used, not the amount of gas in the tank before or after each fill-up.
#251 of 295
poor mileage on 2008 elantra by hyundaihoney
May 15, 2008 (9:14 am)
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I have a new 2008 elantra. My highway mileage is about 32 mpg (not bad -- they advertise 33 mpg). But city is awful -- 19 mpg. Anyone else having the same problems? I'm bringing it into the dealer to have the computer checked. Any other suggestions? Thanks.
#252 of 295
Re: poor mileage on 2008 elantra [hyundaihoney] by fargond
May 15, 2008 (1:10 pm)
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Replying to: hyundaihoney (May 15, 2008 9:14 am)

What is your average MPH in the city? I have 90% city, 10% highway and am not quite halfway through my first tank (~140 miles so far in 2 weeks), and am at 26.1 MPG with an average speed of 22 MPH.
 
What are your city driving habits like?
 
Do you have multiple stops between your home and destination?
Do you glide to stops or keep on the accelerator until just before you are forced to brake?
Do you rev the engine above 2000 RPM after a stop or slowly gain speed?
Do you keep a constant speed when you are between stops or do you vary it significantly by changing pressure on the gas?
Do your idle your car after getting in or before getting out at source/destination?
Do you use a/c or drive with the windows open?
Have you checked the pressure in the tires?
 
All of these things add up to whether or not you can get the advertised MPG. A lot of variables but things to check/consider besides the computer/car itself.
#253 of 295
Re: poor mileage on 2008 elantra [hyundaihoney] by mort4371
May 15, 2008 (1:17 pm)
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Replying to: hyundaihoney (May 15, 2008 9:14 am)

How does it compare to other cars you've owned? Mileage like that could be coming from a problem with the car, but it could also be driving style. If other cars have previously disappointed you (compared to rated figures), it's likely the latter. If not, it may be the former. Can't hurt to get it checked.
 
Driving style and habits make an enormous difference in city/stop-n-go conditions. Hard starts, tailgating, hard braking...all make for ugly mileage. Accelerating reasonably, coasting where/when possible, and laying back a bit from the car in front of you, all make a ton of difference. Aggressive city driving just burns more gas and eats more brakes.
 
Also, though this certainly won't make enough difference to get you to a mileage you like from the number you quoted, you will eventually see a few % better mileage once the engine is well broken in and 'loosened up' a bit.
#254 of 295
Re: poor mileage on 2008 elantra [hyundaihoney] by bwaller78
May 15, 2008 (7:45 pm)
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Replying to: hyundaihoney (May 15, 2008 9:14 am)

I stay within the speed limits, do not tailgate, and coast to stop lights, and I seem to always get between 26.5-28.5 mpg, depending on how much hwy driving I do. The typical week I drive 200 miles, and have 1/2 left which is about 200 miles on 7 gallons on 90% city and 10% hwy. I just had my 6k mile oil change and had the brakes inspected just to make sure nothing was wearing abnormally and reported about 90% of the brake pads left, so coasting to lights does save your brakes, and gas
#255 of 295
Re: poor mileage on 2008 elantra [fargond] by hyundaihoney
May 16, 2008 (9:37 am)
Reply

Replying to: fargond (May 15, 2008 1:10 pm)

My average mph is 16. I live in a small town with multiple stops between home and destination. I glide to stops, don't rev the engine, keep speed the same, don't let car idle, rarely use ac. I will have the tire pressure checked. I have a really light foot and am VERY conscious of my gas useage. But I had a 1994 toyota that got the same mileage!!!

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