This morning I broke my own record of 37.4 mpg by a big margin which I thought was not possible.
Here are some of the things I have observed about 2.5NA
1. Sweet speed is mid 30s, after that rule try keeping it under 65
2. I accelerated during downhill runs and bled speed during uphill climbs - obvious
3. Slower acceleration can really help a lot - there was some debate about accelerating fast which is kind of true to get out of lower gears but once you are at 5th gear or above - accelerate slowly.
4. The more you coast - the more your dash mpg will be under reported. Of course your overall driving style matters but just the way CX5 calculates mpg - it does not credit you enough for coasting. I coast even during my drive and not just while coming to a stop. So the 29.3 you see could actually be 30.5 for me. This is ofcourse not a truly scientific observation. I still hate the overall range of CX5 at ~ 325 miles feck!
All of this does not matter much as my drive home would ruin everything as I loose my s*** and put pedal to the metal. All in all - I am very pleased with CX5 I got in 2016. I don't know about now - in 16 this was the alpha dog in its segment by a country mile.