Complex sentence: It is powered by a 4.6 litre V8 engine built on the same architecture as the one used in the RS Spyder Le Mans Prototype racing car without any engine belts.
Split into simpler sentences: It is powered by a 4.6 litre V8 engine. The engine is built on the same architecture as the one used in the RS Spyder Le Mans Prototype racing car without any engine belts.