I am just over 50,000 Km and recently averaged 37 mpg Imperial on a 3 hour trip doing 105 to 119 Km/hr. Pretty good in my books.
As you get more miles on your GT the mpg should get even better. When I first got my 2WD SXT Plus new back in 2016, I was getting 17-18 mpg in city driving. After driving it for 5,000 miles or so, city mpg had improved to 19-20 and I also took several long cruises where it actually returned 32-33 mpg on the dash monitor. Keep in mind that this was driving on flat, Midwestern Illinois Interstate roads and if it were hilly or mountainous, I'm sure you could expect lower numbers. You may also like to hand calculate the mpg to confirm the dash reading is correct. I have done this a few times and it was very close to perfect. All in all these 3.6 equipped Challengers are excellent all around vehicles!Hi, I am not making Greta happy
With just 600 miles with GT AWD the board computer says European 13 L/100 km what is about 18 mpg. But my driving is far from long haul cruise, enjoying the acceleration at each corner.
Looking to rpm and transmission shifting seems to me that long-haul runs on steady moderate speed (say 130 km/h or 80 mph max) the 30+ mpg shall be achievable... Will let you know
Now that gas here in the US is creeping towards $3.50 a gallon I'm really loving the 3.6 V6 A8 transmission combination. I'd love to have a V8 Challenger, but mine is just about paid off now and only has 19,000 miles on it and it does 80-90% of what a V8 model would do overall. Not trading in anytime soon now that the World is trending to be so messed up and getting more strange everyday.