Last post on Sep 14, 2013 at 9:55 AM
You are in the Hyundai Genesis
What is this discussion about?
Hyundai Genesis, Fuel Efficiency (MPG), Sedan
#15 of 24 Re: Break in changes in city mileage. [sooththetruth]
Jul 17, 2010 (3:47 pm)
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
#17 of 24 2009 3.8L Mileage @ 47,000 Miles
Jul 27, 2011 (10:49 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.
#19 of 24 Mileage???
Aug 18, 2013 (1:07 am)
Really? 22+ in town? 28+ on the highway? hhhmmmmmmmmmmm
#20 of 24 Re: Mileage??? [shagnat]
Aug 20, 2013 (1:25 pm)
Everytime I take a trip to Alabama to see my mom, I average about 28-29mpg for the 370 mile one way trip. I average around 26-27 going back and forth to work.
#21 of 24 real mieage vs trip computer calculation
Sep 13, 2013 (10:27 am)
I am a fanatic for record keeping of my car expenses, so I record each fill up, range and gallons used. Much to my dismay, I discovered that my actual mpg from fill up to fill up runs about 0.5 to 1 MPG less than what the trip computer says I achieved on that tank. I bought my 2011 Genesis Certified used with 17K on odometer and have record every tank so far( now 24K and the pattern is the same. I called Hyundai to see if my model qualified for the MPG overstatement settlement and they told me my model was too new. They said I could bring it to the dealer to have the trip computer calibrated and validate my claims. I hate to take my car to dealer for anything so I will wait until I HAVE to go for something else.
Anybody else validate this subtle exaggeration. I am getting 22-23 MPG but trip computer says I'm getting 23-24mpg.
#22 of 24 Re: real mieage vs trip computer calculation [megabrooke1]
Sep 13, 2013 (11:14 am)
If I remember correctly the "fine print" when I bought my Genesis new in 2009 says that this is a estimate.. +or- a certain percent .One mile per gallon on a 15 gal fill up may be acceptable to the manufacturer..... maybe not for me or you but it is 4them I suppose it can be put in the category of the lies they always tell us, for example a computer doesn't have the amount of storage it says on the specs. A 2GB thumb drive empty has way less than 2GB,build your house and buy a 2X4 and its really 1 1/2 by 3 1/2. For sure this doesn't make it fair or right but its just they way it is and the government allows this and a whole lot more BTW if this is your only problem it ain't that bad as far as cars go. If you enjoy your Genesis half as much as I have in the past 5 years your in good shape. My car has been almost free of problems except for a accelerator part when it was less than a year old and was fixed for free of course.
P.S. Please don't think I'm not taking your problem seriously, if we buy something it should work as advertised. Good luck.
#23 of 24 Re: real mieage vs trip computer calculation [miklo]
Sep 13, 2013 (4:25 pm)
You're right. Manufacturers are allowed to inflate (or deflate) numbers w/out regard of the effects to the consumer. Maybe we should all start paying "approximately" what a total would be.... say if the total is $98.59 we should pay "approximately" $94.14. After all we're being deceived (cheated) at every turn, so why can't we put it back on them....... lol
#24 of 24 Re: real mieage vs trip computer calculation [shagnat]
Sep 14, 2013 (9:55 am)
shagnat.... I like the way you think and I'm in complete agreement, the only problem is they get away with it and we go to jail. LOL