The latest episode of "Chris Harris on Cars" has brought together two of the most amazing cars currently available on the market in their segment: the new Audi RS4 and the Mercedes C63 AMG. As a bonus, two old models were also brought out to play: the original R5 version and the previous R7 generation.

This is a 17 minute long video, but trust us, it's worth every second! You will learn a lot of new things about both vehicles, and you will also will find out which is Harris' favorite car from the two.

As a reminder, the Audi RS4 is powered by a 4.2 liter V8 engine that delivers 450 HP and sprints from 0 to 60 mph in just 4.7 seconds. The Mercedes C63 AMG gets a 4.2 liter V8 engine with an extra 7 HP (total of 457 HP), and makes the 0-60 mph sprint in 4.3 seconds.

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