Top 10: Least reliable cars 1990-2009
Using its own statistics of frequency of problems and hard cash paid out for repairs, Warranty Direct has nominated the Most Reliable and Least Reliable cars built between 1990 and 2009.
In celebrating its 15th anniversary during 2012, Warranty Direct studied more than 200,000 live and historical policies spanning the decade and a half since it started recording reliability data with its unique Reliability Index in 1997, for cars dating back to 1990.
The Reliability Index has become an industry benchmark for used car reliability, using a complex formula to rank more than 450 individual models, taking into account factors such as how often the car breaks down, how much it costs to repair, plus average age and mileage. Click through the gallery below to see the least reliable cars, or click here to see the list of the most reliable.
Audi RS6
2005-2008
If you look at the most reliable cars you'll not that they're typically small and simple - the opposite of the cars at the least reliable end of the scale. Thanks to a combination of common failures and expensive repairs the 2005 RS6 is Warranty Direct's least reliable car of the past 20 years.

