That's a sound solution , I ve been adding to the footer. Possible get them to write review on google places reviews. Think need to change my approach. Cheers Takeshi

Yes in my view, if you also put reviews and customer experiences on these pages that should water down the chances of been duplicate content.  Also pet rel canonical on the pages.  I am pretty sure also Google realises that for some industry types a spade is a spade and millions of website will sell it. Its the ones which make standout with something different will make you rank better.

With the 404 errors can't the system archive the pages with the products which sell I am assuming that 1 page = 1 car or Car Product?  or the system create a 301 redirect automatically the product goes?  Auto sitemaps generation would also tell Google which pages your site has.

I hope this helps

Thanks Chris

Seems there is an issue with the web host.