I have a 1.4 COD S-Tronic and have been mainly using the Gearbox in auto "D" mode the past few weeks as I ran the car in. In the past couple of days, I've used the "S" mode at times and as expected it changes up at higher revs and significantly changes the car's performance. However, what I find strange is when I've accelerated to around 70mph and then continue to drive at that speed the gearbox stays in 5th rather than changing to 7th gear as I would have expected, obviously affecting economy. Anyone else have this experience?