I once drove an automatic M4. You have to rev the damn thing to 5000 RPM to get the gearbox to change up, or you'll be stuck in third on a 100kph class road, which means it is drinking fuel like crazy. And the gaps between the gears could contain two gears. Rev to 5000-5500, it changes up, and the revs drop down below 3000 and your torque just disappears.