When you have a good thing, why not add 2 cylinders and make it great. That's just what Audi as done with the R8 V10 5.2 FSI Quattro and those extra 2 cylinders only add 68 pounds to the R8's weight. The new engine puts out 525hp and 390. lb-ft of torque propelling it to 62mph in 3.9 seconds and a top speed of 196.35 mph. Base price is $146,000.

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