I awarded 4 stars only because of the electrical wiring diagrams (which are very well done, being lifted from the Renault documents) and the last chapter about how to prepare for the MOT tests.
Don't get me wrong, the book has a lot of information but not necessarily the kind you would expect to find in a service manual you paid for. The phrase " ... is best left to a Renault dealer" appears FAR too many times throughout the book and there is absolutely NO information on OBD-II -- as if the book was written for the hardcore mechanic who absolutely hates anything electric. There is NO service information on the automatic gearbox other than "Renault knows best". There is no mention of properly locking the airbag computer before attempting ANY work around the airbag, which is basically inviting you to have an accident. The photographs are all black and white, with poor contrast (which is caused sub-par typography, I'm sure the original photographs were top-notch) and show dirty parts! Some of which are so covered in road grit and oily slime, you can't make them out from the background.
It's a fun read for a Renault afficionado, but has no place in a serious service setting -- be that DIY or a small workshop.