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Hyundai Genesis Real World MPG

18 messages,  Last post on Jul 27, 2011 at 11:49 AM

You are in the Hyundai Genesis Forum.

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

Messages Page 2 of 2

#9 of 18 Re: Break in changes in city mileage. [sooththetruth] by tjc78

Apr 30, 2010 (1:23 pm)

Replying to: sooththetruth (Apr 30, 2010 10:57 am)
Usually I have to baby a car to get the rated MPG, but as of now that doesn't seem necessary
 
There was a new MPG system put in place about two years ago that makes the teting much more like real world driving. It is much easier to beat the new EPA estimates than the old (somewhat) optimistic #s.
 
For example (from fueleconomy.gov) a 2006 Avalon was originally rated at 22/31 25 overall on the new ratings system its 20/28 23 combined.
 
Your MPG seems spot on in your Genesis. My 09 with a tick over 10K is averaging around 20 in all city or gridlock highway.

#10 of 18 Re: Break in changes in city mileage. [sooththetruth] by sooththetruth

May 09, 2010 (6:01 pm)

Replying to: sooththetruth (Apr 30, 2010 10:57 am)
Yeah, I'm replying to myself. Took a round trip ride in my V6 Genesis, 300 miles each way. Wow, there has been improvement with break in. Initial MPG was 23.5 at a cruise controlled 80 mph. That trip occurred with only 1000 miles on the odometer, and on flat land. More recent trip started with 3500 miles on odometer. On the first leg of the current trip, I averaged 26.5 mpg at 80 mph, and that is NOT the computer reading, but the calculated mpg. The computer read 27 mpg. By the way, there was an elevation increase of just over 1000 feet on the first leg. On the way home I took a different route with less highway driving, and more 2 lane roads, though a more direct route. The car did 27.5 mpg, with about 1/3 of the miles driven between 55 to 65 mph, and there were a few stops or slowdowns in some small towns. Of course there was more of a downhill benefit on the way home, though I don't dare estimate what that elevation change meant to the mpg measurement.
 
So average both ways was 27 mpg, right on the number, and that was doing 80 mph on open highways. I am starting to believe the hype about this car.
 
Since the car is actually larger than it first appears, I consider this mileage for a car this size, this powerful, rather remarkable.

#11 of 18 Re: Break in changes in city mileage. [sooththetruth] by miklo

May 10, 2010 (7:34 am)

Replying to: sooththetruth (Apr 30, 2010 10:57 am)
sooththetruth , I just came back from an out of town trip and in fact my gas mileage has improved since the car was new.I just turned 11,000 miles and on this trip doing 80mph I averaged 27.7 which surprised me cuz I do have a tendency to have a heavy foot.In town I'm usually at 22.5 and both the averages are better than when the car was new.To say I'm happy with this ride is an understatement,gas mileage aside I'm pleased with everything about the car,its just a car I really like and is fun to drive.I often get compliments about this car,I have removed all the "H" emblems and installed the wings emblems so the car doesnt say Hyundai anywhere.As a result ppl are often very surprised when I tell them that it is a Hyundai. Anyway enjoy your Genesis I sure do along with many others on this site.
Miklo

#12 of 18 Re: Break in changes in city mileage. [miklo] by sooththetruth

May 10, 2010 (9:42 am)

Replying to: miklo (May 10, 2010 7:34 am)
on this trip doing 80mph I averaged 27.7 which surprised me cuz I do have a tendency to have a heavy foot.In town I'm usually at 22.5 and both the averages are better than when the car was new
 
Miklo
 
I am pleased to hear I have more improvement to look forward to, but the 22.5 mpg in the city seems surreal to me, given the size of the car. I hope to one day post how right you are.
 
By the way, I am continuing to use regular gas, though I once did fill up with 93 octane, and I had no doubt I could feel the difference in performance. I would like to take a blinded test, though, so as to KNOW that I can tell the difference, or if my expectation led me to "feel" the difference.
 
Has anyone else made that "seat of your pants" comparison?
 
It would be a lot harder to drive your car to nearly empty, add one gallon of regular, do speed runs in two directions, then finish off the gallon as much as you dare, add a gallon of premium, and repeat the test at the same site.
 
Is that OCD, or what?
 
Erick

#13 of 18 Great Gas Mileage with New Filter by smookdog

Jul 03, 2010 (9:37 am)

Just returned from a trip from Las Vegas to Phoenix. Somewhat hilly and averaged about 70 MPH. Trip computer showed 32.7 MPG. Was averaging about 24.6 MPG combined in city and highway and commute to work is less than 1 mile so I stop minutes after I start which obviously affects the MPG. Changed the air filter to K & N and very happy with the MPG.

#14 of 18 Re: Great Gas Mileage with New Filter [smookdog] by miklo

Jul 04, 2010 (6:31 am)

Replying to: smookdog (Jul 03, 2010 9:37 am)
Very nice, I have made that trip from Tucson many times I noticed recently that I was getting 23.3 mpg in town which seems to keep improving the more miles I put on the car. (11,750 now) But 32.7 on that road is very nice, and I am assuming you had on the A.C. Good luck with your Genesis and enjoy.
MIKLO

#15 of 18 Re: Break in changes in city mileage. [sooththetruth] by gimmestdtranny

Jul 17, 2010 (4:47 pm)

Replying to: sooththetruth (May 10, 2010 9:42 am)
Here in Cda, the V6 is suppose to run on 87 octane. The V8 on premium.
There are few misconceptions greater than there is between reg and premium gas.
 
Here are the (rather simplistic but) basic facts.
 
- There is more BTU in regular gas. If your manual calls for regular, do NOT use hi test.
 
- Hi-test has less BTU (energy) in it. Hi-test is design to have a higher (read slower) flash point. i.e. it is meant to be burned in combustion chambers which have a high compression ratio. Fuel ignites easier the more it is compressed. That is why older cars that have carbon build up in the C chamber, (which raises the CR due to its basic volume sitting there) often don't ping and run on when owners switch to mid or hi-test. You see....it is the red hot carbon that ignites the gas when the ignition has already been turned off, and hence causes the dieseling or run-on. Because the regular gas has a lower flash point (quicker to burn). So that is why hi-test often eliminates ping and run-on.
 
- there are no more deterents or additives in hi-test than there is in regular.
 
- if your car is designed to run on regular, it will have more power, and run more efficient to boot. (no blind test required)
 
- upper class luxury vehicles (and some lesser ones) often use a detonation device that operates electronically. It can sense regular gas if an owner uses regualr gas in a car that requires premium. But this only fools the engine into thinking it has the proper grade gas. It makes adjustments to engine timing etc to do this. But owners of cars that require premium should switch back as soon as their next tank. Running hi-test in a car that requires regular, actually tends to strangulate the engines ability to perform as manufactured.
 
- because fewer owners purchase premium at the pumps, it is always older gas. Makes sense right? So again, use regular if your car is designed for it.
 
I am amazed at these MPG figures real world owners are getting, and I really enjoyed seeing some of the detailed write-ups here. Very impressive.
 
I am in the market for a Genesis I think. But I am sorta poor and need them to depreciate a little more before I can find one I can afford. Was the first year 2009? Did they have any issues? I sorta hate to buy first year of anything.
If anyone here (non-smokers only please) decides to sell their (V6 only) any year considered, Genesis because their needs change, send me a message here or PM. My notifier is turned on. thanks and enjoy your new rides everyone

#16 of 18 mileage after second fill up - 4.6 by harrybush00

Jan 06, 2011 (10:27 pm)

So far I've put on ~400 miles on the car. On the 2nd fill up, I got a 17.9 mpg average.
 
http://mygenesisblog.blogspot.com/

#17 of 18 2009 3.8L Mileage @ 47,000 Miles by lakerunner4h

Jul 27, 2011 (11:49 am)

I have recorded the $$ & amount of each fill up since I purchased my Genesis 3.8L in July, 2008. After slightly over 47K miles, I am averaging 24.7 mpg with approximately a 55 / 45 mix (highway / city miles). Highest mileage to date -- 31.0, lowest 17.7.

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