by IanH » Sat Sep 02, 2017 8:18 pm
I think the starting point should be that yours will be OK, all RF's will have upgraded boxes.
From release in 2015 to about August or September 2016 there are a range of boxes (numbers listed in a worldwide TSB) that may shred second and third gear under circumstances that are hotly debated. Track or autocross type use seems to be an implicating factor, fitment of an LSD may be another, nothing is confirmed publicly.
Paul Roddison, the subject of the wrecked boxes above has shredded several now while racing, Mazda UK are saying that this breaches the terms of use of the car and will not replace his boxes, which is a slightly odd position seeing that racing and track day imagery have been used in the promotion of the car..
Mazda are speedily replacing those which fail and have not been used in competitive racing, what happens beyond the end of the 3 year warranty, which for some will be August 2018 is a cause of concern.