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Hyundai Elantra Real World MPG 2012

745 messages,  Last post on May 18, 2013 at 10:29 AM

You are in the Hyundai Elantra Forum.

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

Messages Page 9 of 75

#77 of 745 Re: 2012 elantra gls base model with auto mpg update [backy] by 40_mpg_sucker

Dec 12, 2011 (3:56 pm)

Replying to: backy (Dec 09, 2011 8:33 am)
Hi I just had my 2012 checked for this. Not only is it off they know it and have a tolerance chart for it at 60 miles per hour the speedometer is +3.5 MPH
this also sets the odmeter off in the +direction witch recordes 63 miles when you only went 60 miles. This also eats up the warrenty faster.
So your MPG is about 1 to 2 less than you think.
Hyundai knows this and is ripping us off.

#78 of 745 Re: 2012 elantra gls base model with auto mpg update [40_mpg_sucker] by backy

Dec 12, 2011 (4:18 pm)

Replying to: 40_mpg_sucker (Dec 12, 2011 3:56 pm)
Did they say anything about adjusting the speedometer? If not, maybe you could take this "up the chain" to the service manager at the dealership, and then Hyundai Customer Service.

#79 of 745 Re: Odometer/Speedometer update [40_mpg_sucker] by g2iowa

Dec 13, 2011 (7:19 am)

Replying to: 40_mpg_sucker (Dec 12, 2011 3:56 pm)
Issues regarding speedometers and odometers have come up periodically. I don't believe the two readings are directly related. Remember reading an article a few years back in one of the major car magazines (think C&D) that looked into speedometer readings. They found most manufacturers' speedos read high. BMWs, MBs, especially. (I'm also a member of BMWCCA and they've reported that BMW speedos read fast but the odos are accurate). Makes sense from a liability standpoint. No one sues if your speedo says 63 and you're doing 60; but God help you if you're doing 63 and your speedo says 60. But they also found out that even though the speedos read high, the odos were accurate. Which also makes sense from a liability standpoint as you'd get sued if your odo reads fast, eating up warranty.

#80 of 745 Re: At 33 mpg during break-in period [g2iowa] by puffin1

Dec 13, 2011 (6:27 pm)

Replying to: g2iowa (Dec 05, 2011 6:58 am)
ya, I just had to get my snow blower fixed on account of how the ethenol is hurting 2 cyl engines. I bought some Stabil Ethynol killer and for every gallon I put in 2 oz. Snowblower cost $194.00 to fix.
 In my BMW I put some dry gas in and a whole bottle of Marine Stablelizer.
In the VW as I drive it in the winter I put some ethnol stabilizer and dry gas when I fill it.
 Now this Ethynol stuff is making me paranoid.I mix 1/2 tank in BMW w/mobile 93 and the other half with 89 to get 91 octane.
   Lastly, how come states out west get gas w/o ethnoland back east we are screwed?
 ty Puffin

#81 of 745 Re: 40mpg claim being investigated [aviboy97] by kagedude

Dec 17, 2011 (8:20 am)

Replying to: aviboy97 (Dec 05, 2011 9:28 am)
Has anyone taken a 150 plus highway trip using mainly cruise control within 60-70mph on an Elantra and calculating the mpg? I expect 40mpg with this test (because that is what the ad says) but curious how much higher it goes.
 
If it doesn't break 40mpg, Hyundai definitely should re-test the Elantras or take a page from Honda.
 
Following my driving criteria above, my old 2007 Honda Fit Sport was rated at 34mpg highway and I consistently got 37mpg or higher with 40mpg as the top within 37 fill ups.
 
My current 2010 Civic LX-S is rated at 36mpg highway and I got a suprising high of 42mpg a few times and 40mpg a few times within 49 fill ups. I follow the old fashioned methodology of dividing miles traveled with the gas pumped and resetting the trip counter after.
 
No bias against Hyundai but showing some tough love. I owned a 2002 Hyundai Accent GLS and currently have a 2001 Elantra and 2005 Elantra within our family (all original owners). I actually can't wait for the 2013 Elantra Touring. I was actually very disappointed with the Sonata not making the 35mpg claim as well so I ended up getting a Civic.

#82 of 745 Re: RPM's at 65 mph [majorben] by g2iowa

Dec 18, 2011 (7:07 am)

Replying to: majorben (Dec 09, 2011 8:35 am)
Just took a 250 mile highway trip in my '12 GLS AT. She turns over about 2050 RPMs at 65 mph.
 
Interestingly, when I compare just the needle on the speedo versus the trip computer MPH data, looks like my speedo actually runs 2 mph fast. So when needle is centered on 65 mph, the computer calculates I'm doing 67 mph. With needle at 65 mph looks like I'm doing about 2100 RPMs. When computer says I'm doing 65 mph, looks like I'm doing about 2050 RPMs. These are eyeball estimates of RPMs. Too bad the tach is calibrated only in 250 RPM increments.
 
From 55-70 mph, using computer and on level ground in 6th gear, it looked approx. like 55 mph was about 1750 RPMs, 60 mph=1900 RPMs, 65 mph=2050, and 70 mph was about 2250 RPMs. (I got these readings when the car had only about 900 total miles driven so far. Was a nice afternoon at about 48 deg F. A bit windy. Had tires at 33 psi and two adults total in car.)

#83 of 745 5th Fuelling, 1st post-break in: Highway Trip (34.34 mpg) by g2iowa

Dec 18, 2011 (7:15 am)

Went 321.3 miles on 9.357 gal of regular (non-ethanol) 87 oct unleaded for 34.34 mpg. [Used same station, pump, and gas as other tanks.]
 
This was about 250 interstate miles (mostly at around 65-70 mph) and about 70 city miles. So this is about a 78% hwy/22% city split. I used active ECO only about 45% of time (on return portion). Had 3 adults plus about 50 pounds luggage on way out and just 2 adults and no luggage on way back. Ended tank at 990 total miles on odo. So this was the first full tank after the 600 mile break in period. Started trip when it was about 25 deg F (outbound in morning) but ended it when about 45 deg F (in later afternoon).

#84 of 745 Re: 40mpg claim & Hondas [kagedude] by g2iowa

Dec 18, 2011 (7:32 am)

Replying to: kagedude (Dec 17, 2011 8:20 am)
My girlfriend has been only driving new Honds since 1990s, 3 Civics and 1 Fit. She drives about 110 miles each workday on ame highway route at about 60-65 mph. She had an '07 Fit Sport AT. She was disappointed in its highway mileage as it would only get about 33 mpg. Over time mileage declined and when traded it at about 130,000 miles she was getting about 31 mpg. So in Aug this year she traded it in and bought a '12 Civix EX AT. At first she was happy with mileage, getting about 40 mpg but now she is complaining that her mileage has fallen to around 32-34 mpg. (She told me she wondered if the Honda dealer messed with her car at the first oil change. I told her it was just cold winter air and winter fuel blends. She keeps her tires inflated religiously.) Her Civic is far nicer car than her Fit. The Fit engine labors horribly at 65-75 mph. Very, very high RPMs, unlike with her Civic. Which is why Civic EPA sticker highway mileage estimate is so much better than Fit.

#85 of 745 Re: Computer Reading vs Fuel Used [backy] by g2iowa

Dec 18, 2011 (7:48 am)

Replying to: backy (Dec 10, 2011 10:28 am)
My computer reading is still too high. Trip computer said I got 37.0 mpg, but when I fuelled up was 34.34 mpg. That 2.66 mpg reading off is about 7%. Computer has always been 2-3 mpg off each time. Usually high, but was low once.

#86 of 745 % error by stevens5882

Dec 18, 2011 (8:01 am)

Calculating with my own MPG after my last 2 fill ups I have gotten the following results;
 
1st fill up - 9.7 gallons, 336 miles driven, 34.64 MPG, the computer read 37.2 MPG (7% error)
 
most recent fill up - 10.44 gallons, 363 miles drive, 34.77 MPG, the computer read 38.2 MPG (9% error)
 
Both fill ups were at the same gas station, same pump. My commute is 77% highway, 23% city. The first fill up had a few days of heavy traffic and slow downs on the highway. Most recent fill up, traffic was always good. Always using ECO mode and using cruise control when possible. This is in the great Cleveland, OH area, temperatures have been fluctuation between low 30s and low 50s for the last couple of weeks.
 
To me, 7% and 9% error is pretty significant.

Messages Page 9 of 75

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