[metros11]

Personally I don't trust any of these digital auto calculators. The only true way to know what you're getting is to measure at the pump. Fill her up until the pump clicks, don't overfill, reset the trip ODO to zero. Go on your merry way. When it's time to fill up again, fill her till the pump clicks once, again (preferably the same pump as before). Then divide your mileage by the actual amount of fuel you just put in, there's your true MPG.

[Gunkk]

Fuel Buddy app.

http://www.fuelbuddy-app.com/


PS - best I got was the first drive home from N. Palm starting at 5mi on the odo: 26mpg. I've averaged about 15mpg since.

[TheReaper]

I get 24 mpg at 80 mph and I consider that acceptable.

[Evil-Bee-NH]

It's all about the type of driving your doing personally did you really buy the car to drive it like a prius or to have a good time?

[IMadeYouReadThis]

Originally Posted by Evil-Bee-NH

I can't guarantee the LGX suffers from this but i do know the 5th Gen 3.6 LLT and LFX that the LGX is based from did pull timing on regular fuel despite being advertised for it. I'm not saying you'll see any real gains on a butt dyno just inherently better for the longevity if things aren't being cut or retarded because of fuel.

+1 these little engines love the higher octane gas. That's all I run in mine and it pulls strong. You're absolutely right spend the extra few bucks

[Need4Camaro]

Originally Posted by Evil-Bee-NH

It's all about the type of driving your doing personally did you really buy the car to drive it like a prius or to have a good time?

I bought mine for a commuter car but on my 49 MPG pull I was averaging between 80 and 90 out on the flats.