What is the difference between an Audi R8 V8 and an Audi R8 V10?

I've noticed that there are two different versions of the Audi R8 with the V8 and V10 engines. Can someone explain the differences between these two models?

The main difference between the Audi R8 V8 and V10 is the engine size and power. The V8 has a 4.2-liter engine while the V10 has a 5.2-liter engine, giving it an increase in horsepower and torque. In terms of performance and driving experience, the V10 offers a more exhilarating and responsive ride.