The sort of testing that might have once been conducted in the Northern Territory (no longer viable due to speed limits) takes full advantage of the local hot temperatures, kilometres of desert roadways and mountains with steep grades.
The X5's twin-turbo engine is shared with the X6. The 4.4-litre V8 is expected to have about 300kW and roughly 610Nm of torque.
The twin-turbo will be unveiled in the US later this year. As for availability in Australia, BMW has been contacted for comment.