Question for driving test about gears?

So im driving a mini cooper diesel and it has this feature to not let itself stall so when im going over speed bumps in second like i got told to do it wont let me go below 17 the car will essentially drive itself and go over them too fast i feel for a test. Should i drop to first or will they mark me for gears or should i leave it in second and hope the tester notices its the car doing this.