Video: Fifth Gear Pits Mercedes C63 AMG Coupe against Audi RS5

The most powerful versions of premium coupes like the Mercedes-Benz C-Class and the Audi A5 are something like the Swiss Army knives of the automotive world. They can do just about anything aside from going off-road.

These cars can be used every day, making a home to office or school commute as comfortably as their more humble siblings, while they can also seat four or five people and have a decent boot, quality interiors, generous equipment, good looks and a prestigious badge.

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