These are some of the latest shots of Jaguars hot new cat , THE XF-R, getting some testing time in the California Desert. Output of Jaguars new R - vehicle is expected to be around 500 horsepower from a 4.2 litre V-8. Is 500 horsepower enough though to sway buyers from its more powerful German competitors?. What would you choose an RS6 , M5, or a XF-R?
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