Board Thread:General Discussion/@comment-86.31.115.168-20150821095235/@comment-4939977-20151020065614

The 4.2 is powered by an even-firing 4200 cc V8 turbo. The 5.2 is powered by an odd-firing 5200 cc V10 non-turbo to increase power.

If there was a 6.2, then the car would be more powerful due to its 6200 cc engine, yet it would handle like a giant go-kart, making it a piece of cake to drive (super fast on long straights and exits winding corners like they were nothing).