When you rent cars in Sweden, the most cars have automatic as extra, and which they charge extra for, around 100sek/day. However some cars that are only available with automatic (as a standard) for example BMW X5 is anyway sold as a Manual car.

Anyone knows why they do this?.
Also, when renting STW or Sedan models and add automatic as extra its always "due to availibilty". When do i know if this is available? upon pick-up?

And last..
When I rent a car from Sixt, can i always be sure of getting a car from recent model year?