I'd like to interject what I posted elsewhere this morning (keep in mind that the comparison involves a 2016 (not 2016.5) and a 2017 GT:
I do want to comment about how some folks have claimed that the 2017 is so much more expensive. Some have commented that there's a big price jump for the GT model from 2016 to 2017. That's true. With destination and without packages, my 2016 car cost $29,100. The comparable 2017 model is $30,335. That's over a $1,200 difference! Yet to get the 2016 comparably equipped to the 2017, you'd have to add the Tech and i-Active Sense packages for $3005 together. So, that car would come out to over $32,000! That 2016 car would have a CD player (Mazda: boo for removing it on the 2017 on NA models!), but it would lack features standard on the 2017 model. These include: the enhanced MID, auto brake hold, power tailgate (which is very smooth and quiet in operation), increased covered storage (I'm really glad that the USB ports are all covered.), rear USB ports for charging, adjustable angle on the rear seat, vastly improved refinement with the same or better driving dynamics (thanks in part to G-Vectoring control), rear AirCon vents, and previously unavailable i-Active Sense features (e.g., full range adaptive cruise control). So, when someone says that the 2017 is so much more expensive (at least in the US), it's a good idea to take that kind of claim with a grain of salt.