High performance S8 gets twin turbo V8 with 520PS. Plus version has 605PS. Remains relaxing and comfortable when driven gently.

I bought my new daily driver - a 2015 S65 AMG, the most powerful sedan ever made by Mercedes-Benz. It has a 621 horsepower ...

I thought I was getting a dream car, but instead, the dealership sold me a complete disaster—a broken, ugly Mercedes S65 AMG.