Here is very nice comparison test between the Audi RS4 and Mercedes CLK 63 AMG. Two very powerful and sporty convertibles that have left the Autobild testers with a very hard decision to make. Since both have their strengths and few weaknesses, they (testers) could not announce a winner and so decided on a tie. The CLK delivers a lot of torque and a precise automatic gearbox that offers a very comfortable ride and seats comfortably four people. Even though, the Audi is lacking some of the performance, it is still a very sporty car that longs for curves and fast acceleration; the RS4 is also more dynamic than the CLK.