The 2.0 - liter I - 4 engine features a twin - scroll, low - inertia turbocharger with an electronically actuated waste gate for exceptional responsiveness and performance, even while traversing over difficult terrain. (greencarcongress.com)
First off the turbo waste gate does rattle but only till the car warms up, then your good. (carsdesk.com)
The twin - scroll turbocharger itself features variable waste gate valve control. (cheersandgears.com)