Hows your MPG?? mine is pretty bad....

[JonBear]

hahahaha I wish the keystone project would get approved. There have been so many back and forths about that.

 

[Phillig]

My 2015 3.8 AWD is averaging a steady 24 mpg over the first 3000 miles in mixed city and open road driving.

 

[ifli43]

5 day old 3.8 AWD longest run c45 miles each way and showing 22.6. Lot of idle in my drive working things out!!

 

[jonjon72]

It is true that there arent any fuel saving technology and I wonder why not. I am going to go ahead and use the "But the competition has it" card. hahaha

Agreed, this is one thing I wish they had included but not that huge a deterrent. Yet. I can see them with this tech added in a couple of years to be more competitive.

 

[DrNo]

I just completed a 900 mile trip and averaged slightly over 28 mpg. I remembered to use the ECO setting about half the trip. I had 2100 miles on the odometer at the end of the trip. I have a 3.8 AWD and ran at 73 mph.

ajn

 

[ckon]

I just completed a 900 mile trip and averaged slightly over 28 mpg. I remembered to use the ECO setting about half the trip. I had 2100 miles on the odometer at the end of the trip. I have a 3.8 AWD and ran at 73 mph.

ajn

Is that figure from the dash display or calculated manually? TIA.

 

[DRS]

Ok... Gen one 5.0... Solid 29-31mpg manually measured, steady state, at 79mph and under.. Duplicated many many times. Routine, unless strong headwind. I have had couple tanks on 65mph and under traveling on limited access back roads, and have hit 33.8 for the tank, measured manual.

Quick factoids: If one has wheels that are 9lbs heavier per wheel, and are 1-2" taller. It is like adding 450-490lbs weight to the car (source C&D, MotorWeek). And that is just about the different between my 5.0 with 18" verses R-Spec with 19". Hipster wheels add a bunch of rolling resistance to hurt mileage.

I have Michelins, use premium, tires at 40/38 cold, 5-20 synthetic oil, smooth driver which car has adapted itself to... I do not hypermile behind semis, minivans and SUV.

Car is broken in well, and mileage increases with miles.

The rental Gennys I have had, once a good injector cleaner was used, these base V6 on 17" would get over 35 on the freeway. 36.8 was highest. I had increase tire pressures to 40/38.

Love the Gen 2 5.0 ultimate. However, add in all the extra effective weight with the now larger and asymmetrical wheels/high rolling resistance tires, 400lbs+ added weight, lower flowing intake/exhaust, I bet the real world mileage is way down. Too bad.

Yes, we do. It need to "save gas" with this car. It is cool that it used to be at the top of real world mileage for its size and design compared to others. Not so much with the gen 2.

 

[DRS]

Oh, in winter cold, with 19" R-Spec wheels and Bilzzaks, mileage goes down solid 4mpg or so on the same roads (clear and dry)..

 

[waveman]

im in the process of doing so. I even purchased a notepad just for this.

In my experience with the 1st generation, the dash display overestimates mileage by one or two MPG consistently. However, it shouldn't read 12-14 if you're really getting closer to 20. So comparing the displayed MPG to your manual calculation will be important, as it may indicate that there's a problem with the system that calculates mileage for the dash display.

As well, even if much of your driving is stop-and-go, I wonder what the display shows in pure freeway driving at 55 MPH. That should be easy to test. Just take the car out when there's not too much traffic (maybe the 405 at 3 AM, LOL), reset the indicator, and see what it says after a few minutes of driving.

BTW, there are many smartphone apps that make it easy to track actual mileage.

 

[JonBear]

In my experience with the 1st generation, the dash display overestimates mileage by one or two MPG consistently. However, it shouldn't read 12-14 if you're really getting closer to 20. So comparing the displayed MPG to your manual calculation will be important, as it may indicate that there's a problem with the system that calculates mileage for the dash display.

As well, even if much of your driving is stop-and-go, I wonder what the display shows in pure freeway driving at 55 MPH. That should be easy to test. Just take the car out when there's not too much traffic (maybe the 405 at 3 AM, LOL), reset the indicator, and see what it says after a few minutes of driving.

BTW, there are many smartphone apps that make it easy to track actual mileage.

if what you say is true, seems like my car is getting even worse mileage. My mpg reader tells me im getting 13 mpg, if its 1 or 2 too high, LOL im getting 11 mpg? Im sure its theoretical. On my last tank, i was getting roughly 12 mpg. I got around 200 miles of a 16 gallon refill. I will continue my tracking to see if it improves even by one.

I just completed a 900 mile trip and averaged slightly over 28 mpg. I remembered to use the ECO setting about half the trip. I had 2100 miles on the odometer at the end of the trip. I have a 3.8 AWD and ran at 73 mph.

ajn

seems like even the AWD models are getting better mileage than me.

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[ferrethouse]

I'm at 1,200 kms in my 5.0 and am averaging 15.9 MPG so far. All city driving. I have an AWD 5.0 so I guess that's not too bad.

 

[ifli43]

3.8 AWD now with about 400 miles. Trip end summary after 45 mile run showed 27.8 mpg. Computer shows between 25 and 30+ on the road at 65 mph but proof will be on tank to tank calculation rather than the computer. Is your computation on fuel used? Is it very hilly?

 

[JonBear]

I'm at 1,200 kms in my 5.0 and am averaging 15.9 MPG so far. All city driving. I have an AWD 5.0 so I guess that's not too bad.

now im worried. I just passed the 600 mile, or 960 km, mark and im getting roughly 12mpg. now i really gotta go talk to the dealership about this.

3.8 AWD now with about 400 miles. Trip end summary after 45 mile run showed 27.8 mpg. Computer shows between 25 and 30+ on the road at 65 mph but proof will be on tank to tank calculation rather than the computer. Is your computation on fuel used? Is it very hilly?

well im basing of my reading from the avg mpg reader in the car. if i do the basic math i am roughly getting 11.7 mpg. i live in downtown los angeles, and my commutes are very short distance and not alot of red lights. I leave to work at 6:00 am so there is very little stop and go, same when I come back.

 

[Alwaysforward]

Have you done a manual calculation yet?

 

[GenesisCaptain]

One quick and helpful indicator in all of this is the average speed that the trip computer has for the current tank, when you fill up and do the MGP calculation. I have found in my car that the average speed is a very good indicator of what my MPG will be for that tank.

If I have a couple weeks of crappy traffic and no weekend driving, my average speed might be <25 MPH and my indicated MPG might be around 20 - 21 (always about 10% to 15% high in my 2012 3.8). There is an exponential curve with MPG. If my average MPH is 30, then my MPG might be around 23. Then, if my average MPH is around 40, MPG will be in the mid to high 20s.

Everyone who has low MPG and traffic commutes, post your average MPH from the trip computer at each tank.

 

[Brian1940king]

Just completed my milage experiment. I got 20.2. I'm a happy camper.

There are several variables affecting MPGs: Average speed, vehicle weight, use of A/C, driving style, ECO mode or not, idle time, trip distance, cruise control, air temperature, road condition, gasoline octane number, altitude and probably more.

Higher average speed implies non-city roads and longer trips. Longer trips gives the engine time to warm up, increasing efficiency.

You can save 60 lbs by only filling the tank half full (10 gal @ 6 lbs per gal.), not worth the inconvience.

I drive a 2015 3.8 AWD Signature Package with 3k mi. AWD adds 157 lbs to RWD.

I put on 340 mi, with moderate A/C, average trip 8-10 miles one way. I must confess, I forgot to check the average speed, but I suspect it was around 25 MPH. Tried to use ECO mode and cruise control as much as possible. I was alone 85% of the time.

Started with a full tank of regular gas (87 octane).

I got 20.2 MPG (calculated). The car's computer said 20.6, pretty close.

The end.

Brian

 

[thompithak3182]

it depends on how you drive. i watch my mpg meter. i dont gas it at a dead stop, i cruise as much as i can. with city and a tiny tiny bit of hwy miles i get average 22 mpg with top tier premium gas...also used zero ethanol gas regular and i get about the same 22mpg. im still testing with zero ethanol, havent tried premium zero ethanol yet but will soon. with straight hwy miles i can get up to 30mpg. i also have a 3.8 genny hope this helps.

 

[Seattle Genesis]

I'm getting 27 - 31 mpg so far but I'm driving very conservative until the break in period is up. Then all bets are off. I'll probably get around 10 mpg. Lol

 

[Rey]

I have had 4 Genesis. Don't own a '15 yet, but based on my experiences:
1. Gas mileage in city driving varies so much as not to be very useful for comparison purposes. Instead, I keep track of fuel tank range noted after every fill.
2. Hyundai motors are very tight. They loosen up with mileage, and need at least 10K miles to hit their stride. Except for the 5.0 (which had a serious blowby problem), Hyundais do not "use" oil. Just did a 7K road trip, and maybe used a cup of oil.
3. All Hyundai motors thrive on regular gas better than on premium. Regular has more btu/gal and it shows. There will be no detonation. Any detonation will be detected by the ECU and adjusted. Sometimes I do back-to-back comparisons between regular and premium while on road trips just to confirm this view. Always, always I have gotten measurable better mileage with regular. This was so even on a '05 Corvette Z06 motor.
4. Tire pressure is important. My experience is that 38 psi. is a good compromise level for ride, mileage and tire life.
5. Low rolling resistance tires are the real deal. I've had Bridgestones and Michelins - both "work". My '13 Genesis came with Michelins. About ten years ago I did a back-to-back comparison on an Infiniti Q45 I then owned. Mounting Michelin low rolling resistance tires seemed to net almost 1 mpg.

 

[ferrethouse]

now im worried. I just passed the 600 mile, or 960 km, mark and im getting roughly 12mpg. now i really gotta go talk to the dealership about this.

Sport mode?