The Nissan GT-R and Porsche 911 are both high-performance sports cars that are known for their speed, handling, and driving dynamics. However, the main differences between the Nissan GT-R and Porsche 911 is their design. The GT-R is a larger and heavier car, with a more aggressive and angular exterior design. The 911, on the other hand, is smaller and lighter, with a more classic and timeless design.
In terms of performance, both the Nissan GT-R and Porsche 911 are capable of impressive acceleration, speed, and handling. The GT-R is generally considered to be faster in a straight line, while the 911 is often praised for its more refined and precise handling.