Essentially when the film isn't featuring driving then it is pretty bad, even some of the driving sequences are absurd, such as vehicle to vehicle refuelling. The dialogue clunks along like the actors are hitting it with spanners. The leads are good but they are given nothing to work with. Imogen Poots and Aaron Paul have good chemistry, Dominic Cooper broods in his villainy, but it's mostly about cars and men looking grim as they steer them. Like dance-off movies the reasons why people have to race cars are very contrived, even when they are given a way to resolve their goals they choose to ignore it in favour of driving... very.. fast.
Despite this there is some interesting screencraft, the one time that the heroes are in genuine jeopardy is when they are being shot at in a scene that calls back to the end of Easy Rider.
The relationship between the male and female lead is curiously chaste until you realise that they are almost literally id and ego. Julia is Tobey only without the grief and remorse, they like the same things, they can do the same things, you're almost expecting a Fight Club resolution at the end.
There's some silly sexist behaviour and this is a script from before the Bechdel test so don't hope for much on that front.
However when it comes to cinematography for street racing this film does actually move things along.