Consumer Reports has published its 2011 annual auto survey in which the main point of interest, as the report states, is a sharp decline in Ford’s so far “solid reliability record”: the Detroit carmaker dropped 10 places in the overall reliability ranks.

According to CR’s survey, which is based on responses from 1.3 million vehicles owners, Ford’s drop from 10th to 20th place among 28 carmakers can be attributed to two main factors. The first is that all three of Ford’s new models, i.e. the Explorer, Fiesta and Focus, scored below average in reliability in their first year on the market.

“We have often found that new or revamped models have more problems in their first year than in subsequent model years”, commented the senior director of Consumer Reports’ Automotive Test Center, David Champion. “Ford’s problems illustrate why we recommend to our subscribers to hold off buying a first-year model.”

The second factor that contributed to Ford’s decline is problems with new technologies, such as the MyfFord Touch infotainment system and the new PowerShift semi-automatic gearbox used in the Focus and Fiesta. The similar MyLincoln Touch system’s problems even affected Lincoln’s MKX, even though the brand was ranked above Ford. On the positive side, the Fusion Hybrid scored very well, and its other versions were above average.

Contrary to Ford, Chrysler has seen its reliability record improve significantly: Jeep is now the most reliable domestic brand in the U.S., having risen from 20th to 13th place. Dodge and Chrysler did not do badly either, moving up 12 and 3 places respectively.

Predictably, it is the Japanese that continue to dominate the reliability survey, securing the top nine positions of the scoreboard since of the 91 models that CR had sufficient data, 87 ranked average or better and 24 cars earned top marks. Scion (with two models ranked) led the pack, followed by Lexus, Acura, Mazda, Honda and Toyota.

Despite Chrysler’s improvement, the Detroit Big Three still haven’t caught up with their rivals, ranking not only below the Japanese but also the two Korean brands, Hyundai and Kia. GM’s Buick and Cadillac did worse than in 2010, with the LaCrosse, Enclave AWD and SRX scoring lower than last year and losing the “recommended” tag.

General Motors’ best result was the Chevrolet Volt that was the group’s most reliable car, even though the sample was barely larger than the 100-unit minimum required by the survey and the cars were owned for only a few months.

European carmakers were, as always, a mixed lot: the highest-ranking brand was Volvo, at 10th spot, while VW retained its 16th place, and both BMW and Mercedes-Benz improved, though their line-up reliability was inconsistent.

The biggest loser was Porsche: in 2010 it was second best but this year it is second worst, due to only two models being ranked one of which, the second-generation Cayenne SUV, suffered many reliability problems.

Not surprisingly, given its record of accomplishment and decades-old bad reputation, Jaguar finished dead last as its XF and XJ luxury sedans were the two least reliable models in the entire survey.

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