Fast & Furious 6 is the latest incarnation of the series, and you could say it's a reduction.
The good. The races and the fights. Lots of them.
The bad. The story is interesting only because it has a lot of action.
The ugly. Really bad dialogs, way too easy.
The result. If you like the previous chapters, you'll probably be interested in seeing it. The rest of the population better just watch one of the 5 others.