Just Test Drove 2 2015 Genesis 3.8 Sedans. Please give thoughts.

[Gen127]

I've had two 3.8 Genesis and they are quiet. The growl you heard may have been a hacked exhaust. It also may have been driven hard to make it growl. This may actually be the better of the two.

If one wants engine/exhaust growl, I'd suggest getting a mustang or Challenger (or a Harley!). There's something about modifying a luxury sedan into something of a "Look at me, Hear me roar down the street" vehicle that I find ironic, considering the efforts the manufacturer put into isolating the cabin.

 

[2for1]

Just went on a 2000 mile road trip. 2015 3.8 Tech rwd.
I was impressed with the gas mileage I was getting with my wife and I sharing the driving. 70+ most of the time
Getting 28.5 on the trip computer. Then on the last leg we filled up and my wife drove the last leg home.
About 250 miles. Looked at the trip computer again and was shocked. 31.5 mpg! She was doing 76 with cruise and mostly flat terrain except a stretch (20 miles) over the mountains in central VA.
Never verified it with a manual calculation.