2012 Consumer Reports' Worst Used Cars The Audi Q5 (V6) was included in Consumer Reports' survey of "much-worse-than-average" reliability for 2002-2011 models, meaning a higher problem rate than the average model but not necessarily "unreliable," based on a minimum of 100 responses od 1.3 million. The Q5's problems included engine cooling, body integrity and its audio system, the latter among the top complaints of the overall survey. Audi.com