If you are wondering how this is possible you are not alone. As a reminder, this is the same RS7 that recently set the quickest and fastest platform record turning in a 10.0 @ 140 at the drag strip. It's damn fast.

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The AMG GT R is said to be tuned (whose tune?) and obviously is on stock turbos with the way it gets pulled. It is lighter and has a dual clutch transmission but just can not match the raw muscle of the RS7.

Upgrade the turbos on the M178 and game on.