We haven’t heard of the Kluger jumping out of gear as a common problem, but it’s definitely one you need a mechanic to look at as there’s an obvious safety implication if you lose drive at a critical moment. The 'flaring' could simply be the behaviour that’s been programmed into the vehicle at the factory. The idea is that when you start to use large throttle inputs (say, when overtaking) the vehicle interprets that as you driving on a winding, uphill road. So, to keep the engine making lots of power, it holds on to a lower gear than seems normal. And that’s what you’re feeling when the revs stay high beyond your overtaking move. Try adjusting the car’s mode from Sport to Normal or even Economy, at which point the transmission should become a little less frenetic. The good news is that, if there’s something wrong, your car should still be covered by Toyota’s factory warranty (which was three-years/100,000km when your car was bought new) so make it Toyota’s problem. If you’re not happy with your dealer, talk to Toyota Australia’s customer service department.