RS version of the XF does its thing on the Nürburgring with an Audi S7 hot on its heels.

Here's a set of spy pics of a Jaguar XFR-S mule doing some track testing on the Nürburgring, with some shots showing an Audi S7 hot on its heels.

This XFR-S, an RS version of the XF, is wearing the same wheels as the XKR-S cabrio we spied a few days back.

We expect the Jaguar XFR-S to debut late in 2012 or early 2013.

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