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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 49 of 76

#474 of 745 Re: Elantra vs Ford Focus [dc_driver] by crankeee

May 01, 2012 (5:47 am)

Replying to: dc_driver (Apr 30, 2012 2:25 pm)
"Mixed" driving is the key. I would argue that the mix factor is the reason for the variation in MPG results on all cars - not manufacturing reasons. ALL highway miles results in EPA or better while all city miles results in missing the EPA estimate on the low side. It is the type of city driving - both the stop & go frequency and the driver that affects the city MPG to the negative - not the maechanics of the cars.
Another point is that larger engines are more forgiving than smaller engines when getting the mass moving from a dead stop. Larger engines in older car models often achieved better MPG than smaller engine in same model. Cars used to be engineered for overall driveability - now EPA rating is king.

#475 of 745 Re: Real World HWY MPG [ronnomad] by g2iowa

May 01, 2012 (7:37 am)

Replying to: ronnomad (Apr 30, 2012 12:25 pm)
Think too many people overestimate the amount of TIME they spend on highway and underestimate the amount of TIME they spend in city. City stop-and go traffic, esp. where you just sit at a stop sign or light, adds a lot of time but no miles and craters your MPG.
 
Think too many people underestimate their SPEED on highway, spending more time at higher speeds than they think. You won't get 40 MPG driving 70, 75, or higher MPHs. Max fuel economy is in the 50-65 mph range.
 
I have no difficulty seeing people driving a lot of MILES on highway getting 33-36 MPG due to (1) driving at higher speeds or (2) spending a decent minority amount of TIME idling at stops.
 
Anyone seriously looking at their specific car's FE needs to look at the computer's estimate of MPH and the elapsed time, both of which should be reset after each fill up.

#476 of 745 Re: Real World COMBINED MPG [maxx4me] by gman4911

May 01, 2012 (8:16 am)

Replying to: maxx4me (Apr 30, 2012 12:29 pm)
>>>Even though the 40 is more likely coming from the EPA and not Hyundai corporate
 
Actually, it was the other way around. Hyundai submitted the numbers to the EPA and they verified the numbers: linky

#477 of 745 Huyndai Mileage by disatisfiedone

May 04, 2012 (8:55 pm)

I drive a 2012 Elantra 60 miles a day all highway. After 2500 miles I am averaging 32mpg. Complaints to Huyndai USA gets me directions to see dealer, complaints to dealer get responses to write Huyndai (they call that a circular refrence right). Would not bother me if Huyndai would not continue to run ads on TV about 40mpg. Something about truth in advertising? Hate to be paranoid but how many of you getting 40mpg work for Huyndai? Taking mine back to see what I can get for it, oh did I forget to mention the oversensitive steering and just waiting to get pulled over for driving under the influence.

#478 of 745 Re: Huyndai Mileage [disatisfiedone] by gman4911

May 06, 2012 (1:37 am)

Replying to: disatisfiedone (May 04, 2012 8:55 pm)
What does your computer report for the avg MPH?

#479 of 745 Idling hurts a lot by indeed

May 06, 2012 (7:28 pm)

Getting an average of 8.5L/100km (27mpg) between my break-in period (first 1000 km). I drive conservatively, allowing it to shift before 2,200 rpm regularly, and rather let the gear slow down the car instead of breaking it. Only went on highway twice and recorded 6L/100km (39mpg) going at 110 - 120km/h (70m/h - 75m/h) on Canada's 407 for total of 70km (45 miles)
  
The car idling hurts a lot, and it depends on how often breaking/stopping. The dashboard display has it raised 0.1 L/100km every one or two minutes when I was stuck in traffic.
  
However, Canada has it registered as 6.9L/100km for city (34mpg) and 4.9L/100km for highway (48mpg), so I am still looking forward for better gas consumption.
http://www.hyundaicanada.com/pages/showroom/showroom.aspx?model=elantra

#480 of 745 Re: Avg MPH & Huyndai Mileage [gman4911] by g2iowa

May 07, 2012 (7:06 am)

Replying to: gman4911 (May 06, 2012 1:37 am)
Yes, knowing average MPH is absolutely critical when evaluating reported MPG figures per tank. My most recent 2 fill ups (both with regular non-ethanol) show the dramatic impact of not spending so much time in city stop-and-go traffic:
 
- Avg MPH= 35 and achieved 35.45 MPG. Drove 231.4 miles and used 6.528 gals.
 
- Avg MPH= 24 and achieved 29.46 MPG. Drove 258.5 miles and used 8.776 gals.
 
So a 46% increase in avg MPH or an 11 MPH average increase leads to an increase in FE of 20.3% or 5.99 MPG!
 
Computer FE estimate continues to read about 7-9% too high. Computer estimated first tank at 38.4 MPG (got 35.45) and second tank at 32.3 MPG (got 29.46).

#481 of 745 Re: Avg MPH & Huyndai Mileage [g2iowa] by crankeee

May 07, 2012 (12:17 pm)

Replying to: g2iowa (May 07, 2012 7:06 am)
Great analysis! The 6-speed trans is not in highest gear until vehicle speed reachs minimum speed. so when the vehicle speed is higher the trans is in a higher gear and the RPM's are lowest. Result = higher MPG. Not really intuitive but your results and MPH recor explains the results.
Thanks for the work and the thinking. Explains much of the confusion among drivers results.

#482 of 745 Re: Hyundai MPG [madmax512] by gman4911

May 07, 2012 (3:45 pm)

Replying to: madmax512 (Apr 26, 2012 8:30 pm)
>>>Steering is always wandering and needs small corrections constantly on long trips this actually becomes annoying.
 
There is a TSB which might address this issue: TSB 11-SS-001

#483 of 745 Results: EPA Random Test vs Manufacturer's Self Test by g2iowa

May 09, 2012 (6:47 am)

May 2012 issue of Roundel (BMWCCA) has an interesting article titled "EPA makes BMW downgrade 3 Series rating". Discusses how BMW's original self test of their 2012 3 Series 328i automatic gave them a 24/36 mpg rating which they passed to EPA. EPA randomly selects about 15% of the self-reported results and they retested the identical 328i. EPA achieved 23/33, figures that were about 4% and 8% lower. So now the EPA's result is the official one. (BMW's self-test result for the manual transmission 328i remains at 23/34 as it wasn't selected for an EPA retest.) Would be interesting to know if the EPA retested any results for the '12 Elantra.
 
The real world impact would be interesting to study, for buyers who saw the 2 different stickers. IF BMW is right and the EPA wrong, then buyers who see the lower 23/33 mpgs numbers will be pleased when they achieve better results. IF BMW is wrong and the EPA is right, then buyers who saw the original numbers will be miffed that their FE is lower than anticipated. Which group's relative happiness change would be higher? I suspect the ones who really, really wanted that 36 mpg figure and didn't get it.

Messages Page 49 of 76

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