Hyundai Genesis 3.8L V6 - Gas Mileage

[indfac]

Hi,

I am planning to buy a full size luxury/premium sedan in the next few months. And initially when i started doing my research i had never thought about buying a +55K Hyundai car (Canadian Price) , however the more review i read the more i am convinced that Hyundai Genisis gives the best bang for the buck . I have never driven a Hyundai before so i am little scared jumping from recognized Japanese or European brand to a south korean brand. Hyundai warranty is above par most of its competition so that calms my nerves a bit.

The first thing i wanna ask you guys is that the gas mileage on a Hyunda genisis compare to competition is extremely poor. Is there a reason behind this? . For example the Genisis gives a combines mileage of 12.2L/100km , Buick Lacrosse 10L /100km and 300C 8.9L/100km. Why is the gas mileage so poor on the genisis , all three of them have v6 engines with similar weights.

Any thoughts.

 

[italiabrain]

Weight is the primary issue. The Genesis, even in V6 form, is rather heavy. It also makes more HP. I wouldn't put either of the other two mentioned cars in the same class. The 300 is heavily deficient in luxury IMO, and the Lacrosse is FWD.

 

[Alwaysforward]

Welcome to the forum indfac... The added weight we all think is due to the extra safety features built into this car. You are correct when you say that the "Genesis gives the best bang for the buck". I hope to pull the trigger soon on one myself.

I have been following this car since the spy photos came out towards the end of last year. Hyundai has invested a lot of development money into its development of this new gen Genesis.

They have taken consumers suggestions as well as data from Think Tank discussions and put it all together in one nice package. Issues with the previous gen were addressed and improved upon in this version.

Upgraded seats with improved comfort. Improved sound deadening materials to make the cabin quieter. Retuned suspension system to improve the ride. The 8 speed transmission & engine was retuned to eliminate a hesitation at the accelerator.

Many other upgrades make up this new gen. In my opinion, the improvements justify the added fuel cost. If you know the added cost of fuel going in, and it meets your budget, go for it.

 

[Mark_888]

Hi,

I am planning to buy a full size luxury/premium sedan in the next few months. And initially when i started doing my research i had never thought about buying a +55K Hyundai car (Canadian Price) , however the more review i read the more i am convinced that Hyundai Genisis gives the best bang for the buck . I have never driven a Hyundai before so i am little scared jumping from recognized Japanese or European brand to a south korean brand. Hyundai warranty is above par most of its competition so that calms my nerves a bit.

The first thing i wanna ask you guys is that the gas mileage on a Hyunda genisis compare to competition is extremely poor. Is there a reason behind this? . For example the Genisis gives a combines mileage of 12.2L/100km , Buick Lacrosse 10L /100km and 300C 8.9L/100km. Why is the gas mileage so poor on the genisis , all three of them have v6 engines with similar weights.

Any thoughts.

The Hyundai Genesis Lambda 3.8 V6 actually gets very good mileage (are Canadians allowed to use that term if they measure it in L/km?) for a car it weight. However, Canadian models have the HTRAC AWD as standard equipment and for some reason Hyundai's AWD system is not very fuel efficient (although I assume it works quite well in terms of traction). The RWD versions sold in the US get about 3 MPG better than the AWD versions.

 

[ckon]

FWIW, on a 700 mile trip this week my 3.8 AWD consistently averaged over 28 mpg reported on the display. I don't know yet how accurate the computer is. I'll try to do some accurate checks on the way home. BTW, one surprising discovery was that checking speedo accuracy with a handheld GPS returned a PERFECTLY accurate speed reading. Whether that will help produce accurate MPG readings remains to be seen.

 

[indfac]

The curb weight of a Hyundai Genesis (2015 Genesis Sedan 3.8 Technology) is 1950kg and 300C Chyrstler is 1937kg. So what you guys are telling me is that the added luxury and technology decreases the mileage from 8.9L/100km to 12.2L/100km. That sounds like a drastic decrease.

 

[Mark_888]

The curb weight of a Hyundai Genesis (2015 Genesis Sedan 3.8 Technology) is 1950kg and 300C Chyrstler is 1937kg. So what you guys are telling me is that the added luxury and technology decreases the mileage from 8.9L/100km to 12.2L/100km. That sounds like a drastic decrease.

No, I told you the reason. It is the Hyundai AWD system, which is standard on all Canadian models of 2015 Genesis, and reduces mileage quite a bit. The RWD version available in the US gets much better gas mileage (check the Hyundai USA website for details).

 

[parpi]

The RWD 3.8 is rated at 10.7l/100km combined. 13.1city and 8.1 highway.

The AWD is an always on system where it's front rear bias is split 40:60 in normal mode and isn't the typical on demand awd with mostly fwd to save gas.

So your mileage will suffer. City 14.4L/100km, Highway 9.4L/100km, Combined 12.1L/100km

 

[LA Genesis]

Hyundai warranty is above par most of its competition so that calms my nerves a bit.

The Hyundai warranty is a good warranty but you need to be aware that most of the electronics on the car are covered for only 36,000 miles/3 years. Many of us have had numerous electronic issues involving the radio/AMP especially during the warranty period.

I'm looking at new cars and the Genesis is on my list despite the fact that my car has had more issues than any new car I have owned. The 2015 G is a beautiful car but I won't buy it if the voice recognition system is as awful as I have read here. Check out the system on the specific G you want to buy.

I would also like to add that I am very impressed with the low cost of maintaining a G. It is inexpensive to maintain compared to the Euro/Japanese luxury brands.

 

[rickfen]

I have a Canadian 2010 3.8. I have recorded every fillup etc.
The car has approx 80Km. With about 50% highway, 50% city (and a bit of a lead foot), my average is 10.8 litres per 100Km (only means something to us canucks). My lowest has been approx. 8.5 per 100 and a high of almost 16 per 100 (I like to "exercise" the car every now and then)
I've been very happy with the mileage relative to the power etc the car has. Good balance!

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[GypsyDRB]

FWIW, on a 700 mile trip this week my 3.8 AWD consistently averaged over 28 mpg reported on the display. I don't know yet how accurate the computer is. I'll try to do some accurate checks on the way home. BTW, one surprising discovery was that checking speedo accuracy with a handheld GPS returned a PERFECTLY accurate reading. Whether that will help produce accurate MPG readings remains to be seen.

Wow that is great! Very impressive and and something i was worried about. Can you share how many passengers you had and what mode you were driving in as well as approx. time spent in cruise control?

Thanks in advance

 

[ckon]

Wow that is great! Very impressive and and something i was worried about. Can you share how many passengers you had and what mode you were driving in as well as approx. time spent in cruise control?

Thanks in advance

Two passengers, a trunk load of photo eq and luggage, traveling through VA and WVA mountains and Ohio flats, with and without cruise, Sport and Normal mode. My only caution is that I haven't been able to actually calculate the mileage so far because the gas station where I recently filled up had it's pumps installed in an area that the car was on a pretty extreme slant with the left rear high. My calculation there was about 25.6 but I think the position allowed a greater amount of fill before shutoff resulting in a false low figure. I don't trust that number and will be double checking on the way home in a couple of days.

BTW, FWIW the car now has over 3000 miles and, IMO, is still flawless! This is the only car I can ever remember owning that I didn't discover some really stupid design in some system. I'm not saying that there aren't things that could be improved, but there's nothing that's important enough that it jumps to mind. I still consider it the most completely "properly" engineered car I've had.

Another PS: The 28 mpg figure was easy to achieve - it didn't require a hyper-mileage style of driving. Let's hope it turns out that the display is fairly accurate.

 

[DRS]

First gen V6 broken in MPG in driving like above would be over 31mpg. I hope yours needs more break in miles.

I got back from 765mi biz trip, and averaged 30.4 measured manually. Indicated was 29.6. This is typical. Speeds were 75-85mph. Mostly gentle hills, and flat of OH, KY, IL, IN. Light winds that were crossing or slight crossing headwind.


Tire pressures 39-36 cold. Premium, AC running. Did "clear the lungs" wide open on onramps at gas or food breaks.

About 70+ miles were heavy in town driving.

I have 5.0 TAU...

When I had rented gen one
GDI base V6 many times down south, trip mileage at 75-80mph was 34-35.8mpg measured. Made sure tires were inflated and used good gas.

On all the example above, I had two people.

I bet you should bump up to 31mpg once broken in. If not, they took one more backwards step.

 

[ckon]

I bet you should bump up to 31mpg once broken in. If not, they took one more backwards step.

I don't necessarily consider it backwards. TANSTAAFL. The piper has to be paid and with the additional weight and the AWD I'm very happy with 28 if it's actual. I did see numbers a touch over 30 but, as I said 28 was easily repeatable. It will be extra frosting on the cake if it improves as break-in proceeds.

 

[DRS]

You have AWD... Well, based on that design, you are doing well. I bet when it breaks in you will hit over 30mpg ok a similar trip.

 

[DRS]

I am sure it is a amazing car.

 

[italiabrain]

The curb weight of a Hyundai Genesis (2015 Genesis Sedan 3.8 Technology) is 1950kg and 300C Chyrstler is 1937kg. So what you guys are telling me is that the added luxury and technology decreases the mileage from 8.9L/100km to 12.2L/100km. That sounds like a drastic decrease.

Weights are always confusing because different sources report them differently, but I'm finding 1745kg and 10.5L/100km for the Chrysler with the 3.5 V6 from a Chrysler spec sheet. What exact version are you referring to? The 1937kg you listed is above the optioned up weight range for the 5.7L V8 on the Chrysler spec sheet.

 

[aljanaz]

Just got done doing 2500 mile trip, Tucson to Yellowstone to Bellingham Wa. In my new 2013 base Ginny 3.8, with now 20,000 miles. Got 31 highway at avg 78 mph, but only got 17 around town, both surprising.

 

[ckon]

FWIW, on a 700 mile trip this week my 3.8 AWD consistently averaged over 28 mpg reported on the display. I don't know yet how accurate the computer is. I'll try to do some accurate checks on the way home. BTW, one surprising discovery was that checking speedo accuracy with a handheld GPS returned a PERFECTLY accurate speed reading. Whether that will help produce accurate MPG readings remains to be seen.

We just got home from the second half of the trip and my car's computer was displaying 29.0 mpg. I filled it up and did a manual check and it turned out to be 27.5 actual - still very good but not what the computer was displaying. I'll be checking it a few more times in the coming weeks and will keep ya posted on what it's looking like.

 

[Ernie3647]

We just got home from the second half of the trip and my car's computer was displaying 29.0 mpg. I filled it up and did a manual check and it turned out to be 27.5 actual - still very good but not what the computer was displaying. I'll be checking it a few more times in the coming weeks and will keep ya posted on what it's looking like.

27.5 pretty damn good for an AWD 4500 pound car. What was your average speed?