Whistling woe in our Audi A6 Avant

We're midway through the long-term loan of our Audi A6 Avant and after a whopping 4,971 miles behind the wheel, someone has finally managed to prise the keys away from my death-grip grasp long enough to have a go themselves.

To say I've been hogging the Audi would be somewhat of an understatement – much like a toddler's comfort blanket, I've found the Avant's comfy white leather seats and heated steering wheel a reassuring friend in all manner of circumstances.