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The Porsche Boxster - the third most expensive car on the list and 36% less reliable than the original.
The Zafira is General Motors entrant in the listing - the B model is 40% more likely to break down than the A model.
Ford's long-standing, top-selling, gold-plated Fiesta nameplate was tarnished by the Mk V which is 55% more likely to break down than the Fiesta Mk IV
Audi still won awards for its post-2005 A4 - would it have won those awards if we'd known it was 30% more likely to break down than the pre-2005 A4?
It looks better, no doubt, but the Golf Mk V broke down more often than the Golf Mk IV.
BMW's top selling 3 Series went backwards in reliability in the changeover from the E46 to E90 Series.
Based on the figures, the third generation Jaguar XJ would have to be one of the biggest stinkers of all time - it was 60% more likely to break down than the previous model
The Jeep Grand Cherokee is a perennial top 10 finisher in Warranty Direct's "most unreliable" cars listing.
The E90 was the black sheep of the BMW 3 Series family, at least for reliability
France's sole entrant was the Espace from Renault. The fourth generation Espace was a blot on Renault's copybook.
The top 10 biggest lemons in history
The top five biggest lemons in history - to this point.
The CLK showed a significant decline in reliability in the transition from the original CLK model (which has a 28% failure rate) , and the subsequent and current model which has a likelihood of failure of 33% - roughly 18% less reliable.
A screenshot from the Reliability Index web site showing the marques with the poorest reliability
The most unreliable models - how can one of the most expensive makes also be the most unreliable?
When the likes of Jaguar, Porsche, Ford, GM, BMW, Mercedes, Audi, Volkswagen, Renault and Chrysler introduce a new model series, it is equally or more reliable than the model it replaces. Right? Wrong! New information has been released this week which indicates all of the above companies have replaced major models with less reliable models in the last decade - the worst three examples were 60%, 54% and 40% more likely to break down than their predecessor.
Read the full article: The stinkers list - 10 model series that were less reliable than the previous model
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