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

[JonBear]

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

Thanks a lot Brian. I am going to be doing the fuel consumption test hyundai gave me and they want me to bring it in after 3 tries. ill see where that goes.

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.

wow zero ethanol. that seems to be a luxury here. very few places have it in California. 14 to be exact hahaha. I wonder how much of a difference it really makes. seems like your averages are slightly higher.

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

I find it odd some people tell me that I wont get as good mpg during the break in period but seems like there are also people reaching good reasonable numbers. I have yet to step on it and I want to have the confidence to do so hahahah

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.

Thanks for the tip Rey. I will try regular next time. I have been putting premium only till now so Im not sure if regular will affect it in any way. and 10k sure seems very far.

Sport mode?

VROOM VROOM!!~~~ in my dreams. I always find myself pressing the button for sport mode and instantly realize I should wait.

 

[thompithak3182]

hey jonbear... yeah. i got a zero ethanol gas station right down the street from my house. well, i dont think premium or zero ethanol matters. i have been getting 22 mpg average pretty much since i got the car. i could be wasting money as far as i know. it was made to run off of regular gas, so... i might just stick with regular top teir gas and save some money. yeah, straight hwy miles i have got 30mpg on a 97 mile trip. very happy i beat the 28mpg standard they have on it. my question would be if you are using top tier gas, is there a need to use fuel injector cleaer as required by the manual.

 

[Thegreygeek]

My 3.8 AWD is 20 days old. I have 1,506 miles on it and my average mpg is 24.9. that mpg is calculated by the amount of fuel I have put in it. I will admit that a wee bit over 1,000 of those miles were put on during my trip from Chicagoland to Alabama. In spite of the entire state of KY being in process of construction, at least on I-65 speeds ranged from 0 to 96 mph and I ended up averaging 28.4 mpg for that trip. So, yes I actually got better highway (interstate) mpg with my 2012 4.6. This 3.8 beats it at idle and in traffic so the overall avg is much better. I am happy. And yes once it gets broke in it should do better yet. My old 2012 4.6 did much better after about 20,000 miles, using Pennzoil 0w-20 did help a lot too.

 

[ferrethouse]

Prius vs M3

It's how you drive

http://www.bbcamerica.com/top-gear/videos/thirsty-prius/

 

[ameapm2000]

I own a 2015 AWD V6. Recently I had a road trip.
I maintained average of around 75 mph and mileage was 29.3mpg.

 

[ksoze]

Prius vs M3

It's how you drive

My recent 2011 M3 convertible never got above 14 MPG in mostly civil city driving. It usually hovered around 13.5 MPG on the computer and would get to 14 with increased highway driving. Never saw above 14 MPG.

 

[FlySwatter]

I keep my LCD Display set to the Trip Mode/Fuel Economy display so that I can keep a constant eye on the "Instant Fuel Economy" reading. I base my driving habits on keeping this reading as high as possible to maximize my fuel economy and find it a useful tool for doing so.

 

[quanva]

once i crossed over 1k miles my MPG really went up, during a 40 miles roundtrip i avg 35.2 going by the computer..my driving is very light, using the paddles to more up quicker thru the gears