I just drove 1,200 miles from Albuquerque New Mexico to Los Angeles California thru El Paso Texas. All interstate driving ranging from 70 - 88 mph. First 300 miles or so was in normal and remaining was in ECO mode (I know, say it isn't so - haha), A/C was constantly on and I was babying her as if a break in. I consistently saw 26 - 29 mpg between fill ups. Granted most of those miles were pretty flat. Now that I'm in LA, city driving has dropped me to around 17 mpg.

I suspect I can reach that 33.6 figure on a downhill stretch drafting a Prius - grin

My 2 cents worth.

 

While in ECO Custom mode on cruise control, flat highway.

 

 

 

Right? It's not why I bought this car.

 

 

 

This thread is really only about seeing how much MPG it ''can'' achieve even if on the majority of my drives I average in the low-to-mid 20s. I still find it amazing that it achieves so much more cruising MPG than my Aston Martin Vantage could even if it was rated at ''only'' 420 HP.

 

 

V8? Impressive -- almost as much as that outside temp - 102 Degrees! Wow.

 

Note the time of day: 10am! The high in Phoenix was 109 yesterday. No wimps allowed here!

 

Either I'm enjoying the car too much or I'm doing something wrong.

 

I would say you're enjoying the vehicle as intended. I did what I did to see if I could get the mileage close to what others have achieved, so I drove about 100 miles (Tucson to Phoenix) in Eco mode with the cruise engaged. But I set my cruise to 83 mph. Surprisingly, I still got 31mpg. Normally, I'm guessing you and drive similarly and I'm probably getting similar results to yours.

 

I have managed 32mpg in Eco mode with AC blowing ice cold and tunes going drove from AZ to CA and back. I currently have about 10,000 miles on my LC. No garage queen here Ha! Ha!