Fuel Economy

[Bamm1]

So the lighter 3.3T G70 gets worse city fuel economy than the larger Stinger GT (3.3T)?

G70 RWD 18/26/21
G70 AWD 18/25/20

Stinger RWD 19/25/21
Stinger AWD 19/25/21

For the 3.3T equipped models.: The much heavier G80 and G90 get the same fuel economy with AWD (17/24/20). Then the lighter AWD Stinger improves on that slightly (+2/+1/+1). Then in the even lighter G70, it gets worse (-1/+0/-1)....say what now.........not the same as the Stinger (like the G80 vs. G90) but worse...........

 

[g70]

The fuel economy is the one downer I have on the 3.3T.

 

[Bamm1]

The fuel economy is the one downer I have on the 3.3T.

It has the worst fuel economy in its class, sadly.

340i xDrive 21/31/25
AMG C43 20/27/23
S4 21/30/24
Q50 RS400 AWD 19/26/22

But the worst in class fuel economy should be a driver to price the G70 super aggressively. Price the top spec G70 AWD model in the low 50's and the money you saved vs. the top spec versions of the S3, C43, etc. can buy you a LOT of gas. Price it too close and the fuel economy can become a deal breaker.

 

[EdP]

So the lighter 3.3T G70 gets worse city fuel economy than the larger Stinger GT (3.3T)?

G70 RWD 18/26/21
G70 AWD 18/25/20

Stinger RWD 19/25/21
Stinger AWD 19/25/21

For the 3.3T equipped models.: The much heavier G80 and G90 get the same fuel economy with AWD (17/24/20). Then the lighter AWD Stinger improves on that slightly (+2/+1/+1). Then in the even lighter G70, it gets worse (-1/+0/-1)....say what now.........not the same as the Stinger (like the G80 vs. G90) but worse...........

It would only bother me if I was obsessed with statistics, but what is the real difference? They don't do fractions and I don't know how they do rounding, but if typical on the given day of testing, one car clocked 25.4 and the other, 25.6. On the city, it may have been 18.4 versus 18.5.

In real life conditions for your personal driving, how much will that cost you over 50,000 miles? If it is truly 1 mpg it is 77 gallons, bit if the actual difference due to rounding is 2/10 it is 15 gallons or about $40. Is that enough to sway your decision to buy Car A over Car B?

 

[BlancaGenny]

Price the top spec G70 AWD model in the low 50's...

That would be extremely competitive but I can't help to compare it with the Stinger (top trim is $52k). I'm imagining it'll be a few k's more. If Genesis puts it in the low $50k's, the Stinger will have some heavy competition.

 

[Roc 5.0]

Can't see why all the negatives about the lower mileage. Do the math over a 10,000 mile/ year of 1 or 2 mpg less with a great performing car.. If it's too much, consider a Prius.

 

[g70]

Can't see why all the negatives about the lower mileage. Do the math over a 10,000 mile/ year of 1 or 2 mpg less with a great performing car.. If it's too much, consider a Prius.

Because some of us have to live within a budget

 

[EdP]

Because some of us have to live within a budget

If 1 mpg is a make or break on a $45000 car, you should be looking at a Hyundai Accent.

 

[Roc 5.0]

Nothing wrong with living within a budget, but then again buy what you can afford is the best practice, or wait and buy used. Once you drive a new vehicle (est $50K!! or more) off the lot you lose 25% of its value. Years of any gas mileage difference. These cars make up for any slightly lower gas mileage by having 100K warranty on drive train repairs and 60K on overall repairs.. to me a much better deal than 1-2 mpgs of fuel. My opinion, particularly since it is no longer an inexpensive vehicle in the first place.

 

[GenesisYEG]

Every car I drive gets around 12 MPG lol

______________________________

Help support this site so it can continue supporting you!

 

[GV70GUY]

I average 20-21 with my G80 3.3T AWD and with winter fuel so I expect to see a 1-2 mpg improvement in the spring. So I would be surprise if the G70 being lighter can't do better than a G80.

 

[devellis]

Of course, rounding can work in either direction. A nominal 18 MPG vs. a nominal 19 MPG may actually be 18.4 vs. 18.6. But it might also be 17.6 vs. 19.4. You have no more basis for assuming the former than the latter. But having said that, I agree that the actual difference is probably pretty small and wouldn't be a determining factor for me.

Actually, if the lighter G70 has slightly worse mileage than the heavier Stinger, I'd be happy for the difference if it meant that the Genesis had a slightly hotter tune and slightly better performance. That doesn't seem unreasonable. Other than coefficient of drag/friction, there aren't too many other variables on cars so similar that would cause the lighter version to get poorer mileage. Of course, it could be down to the testing conditions or some other factor but a slightly more aggressive state of engine tune is also a possibility. They could easily do this and still report the same nominal horsepower. Can't fudge the EPA figures, though.

 

[dougjp]

Of course, rounding can work in either direction. A nominal 18 MPG vs. a nominal 19 MPG may actually be 18.4 vs. 18.6. But it might also be 17.6 vs. 19.4. You have no more basis for assuming the former than the latter. But having said that, I agree that the actual difference is probably pretty small and wouldn't be a determining factor for me.

Actually, if the lighter G70 has slightly worse mileage than the heavier Stinger, I'd be happy for the difference if it meant that the Genesis had a slightly hotter tune and slightly better performance. That doesn't seem unreasonable. Other than coefficient of drag/friction, there aren't too many other variables on cars so similar that would cause the lighter version to get poorer mileage. Of course, it could be down to the testing conditions or some other factor but a slightly more aggressive state of engine tune is also a possibility. They could easily do this and still report the same nominal horsepower. Can't fudge the EPA figures, though.

Is the gearing exactly the same? That could be the difference.

 

[devellis]

Is the gearing exactly the same? That could be the difference.

Yes, it could. But I think gearing that required more energy to carry a car a mile would also be gearing that made the car cover that mile faster. More parasitic differences that lowered mileage without increasing speed would be stuff like tires' rolling resistance.

 

[Bamm1]

My comparison to the Stinger wasn't really a "you should buy the Stinger for the fuel economy gain". It was more to illustrate that this engine is used in 4 applications for the Genesis brand and the lightest model did not end up with the best fuel economy. I agree it could be because of the transmission programming, engine tuning, etc. The G70 is likely geared more towards performance vs. the grand touring Stinger (at least in the US). So if/when the G70 ends up being faster than the Stinger, that 1 mpg deficit really doesn't matter.

But not trying to maximize fuel economy for this application of the engine might be troublesome when it comes to other competitors in the class. The long standing class benchmark, the current BMW 340i xDrive 8A, gets 25% better fuel economy overall. That is a huge difference to someone who just wants a compact sport sedan that drives nice for use as a daily driver. It might even matter for those not just trying to be frugal. Some people just don't want to fill up as often. Some might want want the "sport sedan" that is the greenest it can be.

For the performance minded folks, the current 340i xDrive goes 0-60 in 4.1s and does the 1/4 mile in 12.7 @ 108 mph. Will the G70 be faster than that? Maybe. But the M340i is coming to improve on those numbers. The '19 C43 now has 385 hp and a muti-plate clutch that replaced the torque converter in the 9A as well. Both will get better fuel economy AND probably be faster than the G70. Not to beat a dead horse, but Genesis best price the G70 substantially below those models to make it a compelling purchase.

 

[Mcc]

My comparison to the Stinger wasn't really a "you should buy the Stinger for the fuel economy gain". It was more to illustrate that this engine is used in 4 applications for the Genesis brand and the lightest model did not end up with the best fuel economy. I agree it could be because of the transmission programming, engine tuning, etc. The G70 is likely geared more towards performance vs. the grand touring Stinger (at least in the US). So if/when the G70 ends up being faster than the Stinger, that 1 mpg deficit really doesn't matter.

But not trying to maximize fuel economy for this application of the engine might be troublesome when it comes to other competitors in the class. The long standing class benchmark, the current BMW 340i xDrive 8A, gets 25% better fuel economy overall. That is a huge difference to someone who just wants a compact sport sedan that drives nice for use as a daily driver. It might even matter for those not just trying to be frugal. Some people just don't want to fill up as often. Some might want want the "sport sedan" that is the greenest it can be.

For the performance minded folks, the current 340i xDrive goes 0-60 in 4.1s and does the 1/4 mile in 12.7 @ 108 mph. Will the G70 be faster than that? Maybe. But the M340i is coming to improve on those numbers. The '19 C43 now has 385 hp and a muti-plate clutch that replaced the torque converter in the 9A as well. Both will get better fuel economy AND probably be faster than the G70. Not to beat a dead horse, but Genesis best price the G70 substantially below those models to make it a compelling purchase.

You forgot to mention the price comparison with the 340i xDrive for folks that seems to be price conscious, as you point out fuel economy folks are.

 

[Bamm1]

You forgot to mention the price comparison with the 340i xDrive for folks that seems to be price conscious, as you point out fuel economy folks are.

Not sure I follow. I did mention pricing in my last sentence.

The bigger the price difference, the less fuel economy and even performance matter. But, say you can step into a moderately optioned M340i with pricing similar to a fully loaded G70 but get better performance, fuel economy, higher resale value and better brand recognition (as that does matter to some) that will likely be a tough hill to climb.

 

[BlancaGenny]

For the performance minded folks, the current 340i xDrive goes 0-60 in 4.1s and does the 1/4 mile in 12.7 @ 108 mph. Will the G70 be faster than that?

Negative, ghostrider. The Stinger was underrated from the factory. Some guys over on that forum, which I'm a part of, see anywhere from 311-351whp. With the lowest figure, 311, and having a 17% powertrain lose (average), that gives you 372bhp. The 351 dyno gives the guy over 400bhp (This was claimed, I am not saying if this is true or not). It will be a mid 4sec to 60 sprint and clip the 1/2 in probably 13 flat. Car and Driver usually gets the better side of the tests and did the Stinger RWD 3.3 in 4.4 sec. It'll be close to the 340i xDrive and will probably trap a higher speed than it but a 12.7 is quick as h*ll. It will probably come down to the driver but AWD and automatics are pretty consistent even with different drivers at the wheel. Expect the 340i to have the majority and a few G70's beating the 340i. Edge will go to the 340i.

 

[Bamm1]

Negative, ghostrider. The Stinger was underrated from the factory. Some guys over on that forum, which I'm a part of, see anywhere from 311-351whp. With the lowest figure, 311, and having a 17% powertrain lose (average), that gives you 372bhp. The 351 dyno gives the guy over 400bhp (This was claimed, I am not saying if this is true or not). It will be a mid 4sec to 60 sprint and clip the 1/2 in probably 13 flat. Car and Driver usually gets the better side of the tests and did the Stinger RWD 3.3 in 4.4 sec. It'll be close to the 340i xDrive and will probably trap a higher speed than it but a 12.7 is quick as h*ll. It will probably come down to the driver but AWD and automatics are pretty consistent even with different drivers at the wheel. Expect the 340i to have the majority and a few G70's beating the 340i. Edge will go to the 340i.

Can't say I disagree with your assessment. The weight different between the Stinger and the G70 are only going to gain you a few tenths in the 1/4 mile at the most. There has been speculation about more aggressive tunes for the engine and transmission in the G70. That would also help if it turns out to be true.

As far as the dyno readings go, take them all with a grain of salt. Dyno readings can vary wildly based on dyno type, correction factors, weather, etc. For example, people refer to the Mustang dyno as the heart breaker and the Dynojet as the dream maker. Dynos are good tools to measure performance gains after modifications. Were the delta is the most important value. They however, are not a good tool to determine "crank" engine power. A dyno run is not equivalent to the SAE certification process.

Lastly, no dyno needed to report that the 340i being rated at 320 hp is laughable.

 

[Mcc]

Not sure I follow. I did mention pricing in my last sentence.

The bigger the price difference, the less fuel economy and even performance matter. But, say you can step into a moderately optioned M340i with pricing similar to a fully loaded G70 but get better performance, fuel economy, higher resale value and better brand recognition (as that does matter to some) that will likely be a tough hill to climb.

My apologies. Yes you did and I missed it. So what does a moderately optioned M340i go for msrp?