If you are into 'Bangernomics' or 'Emerging Classics', the excellent AA Car Test Report PDFs are useful. The AA seem to have taken them down. Here they are on the 'Wayback Machine' internet archive. Also contains Pdfs of Maestro and Montego tests.
https://web.archive.org/web/*/https:...s/AA_REPORTS/*
https://web.archive.org/web/*/https:...s/AA_REPORTS/*