What is the difference between the Audi A8 L 55 TFSI and the A8 L 60 TFSI?

I am trying to decide between the Audi A8 L 55 TFSI and the A8 L 60 TFSI, but I can't seem to figure out the main differences between the two models. Can someone explain the key distinctions?

The main difference between the Audi A8 L 55 TFSI and the A8 L 60 TFSI is the engine size. The A8 L 55 TFSI has a 3.0-liter V6 engine, while the A8 L 60 TFSI has a 4.0-liter V8 engine. The larger engine size results in more power and acceleration.