[sdfischer]

Only a few hundred miles on our 2023 3.5 Sport Prestige but combined city/highway is about 16-17 mpg!! 90% in Comfort, just a bit in Eco or Sport. I have a light foot. My BMW with similar engine and power gets 24! Your experience? Hard to believe the CPU is controlling too rich but....
Thanks!

 

[SGilbert]

That's about right! I've tracked around 15,500 miles and average 17.4 mpg using Fuelly.com. (FWIW, I only use regular 87 octane)

 

[sdfischer]

That's about right! I've tracked around 15,500 miles and average 17.4 mpg using Fuelly.com. (FWIW, I only use regular 87 octane)

That's depressing. I've been feeding it 93 octane since no one carries 91. Are you having any knocking or performance issues? I can see 89 but 87 is a surprise.

 

[SGilbert]

That's depressing. I've been feeding it 93 octane since no one carries 91. Are you having any knocking or performance issues? I can see 89 but 87 is a surprise.

None whatsoever! Much discussion on all sorts of social media. You'll never get a definitive answer. My car, my choice. The GV80 just adjusts accordingly.

 

[veloprate]

I've been using 93 octane on my GV70 3.5T. I currently have 4417 miles on my car and I'm averaging 19.5 mpg with a combination of city and highway driving. I typically keep this in Eco mode unless I'm merging or wanting to pass someone. Then I will shift to either Sport or Sport+ mode. I rarely just drive in either of the Sport modes, though, unless I'm feeling bored. I love this car!

 

[sdfischer]

I've been using 93 octane on my GV70 3.5T. I currently have 4417 miles on my car and I'm averaging 19.5 mpg with a combination of city and highway driving. I typically keep this in Eco mode unless I'm merging or wanting to pass someone. Then I will shift to either Sport or Sport+ mode. I rarely just drive in either of the Sport modes, though, unless I'm feeling bored. I love this car!

Thanks! Good plan. I'll try Eco but it sure is gutless!

 

[veloprate]

Thanks! Good plan. I'll try Eco but it sure is gutless!

I knew going in that this was NOT an efficient engine. Sometimes you just have to balance fun vs efficient.

 

[SGilbert]

That's about right! I've tracked around 15,500 miles and average 17.4 mpg using Fuelly.com. (FWIW, I only use regular 87 octane)

I apologize! I just realized that this thread was for the GV70, not the GV80 that I have. That said, I would expect the GV70 to get better, possibly in the 19-20mpg range, than my heavier and larger GV80.
FWIW: I still stand by my 87 comment.