Interesting in the previous (completely version of the site) that page used to get crawled fine, but it had more content (but exactly the same as the parent one).
I wonder whether I should accept some duplication, just bite the bullet and write lots of original content, maybe find a way to explain google (using microformats) that it's a page that aggregates reviews.
I still need to figure out whether is it more worthwhile focusing on long tail keywords that the engine page would allow (E.g. Audi A6 1.4 Bluemotion TDI reviews) or just merge it together with the parent one for a much more content rich (Audi A6 Reviews).