14. Jaguar S-Type / XF
The Jaguar S-Type was produced between 2000 and 2009 when it was replaced by the Jaguar XF. Both vehicles have reliability issues, the XF more so than the S-Type. The vehicles require frequent repairs, some of them major. Autoblog reports that the XF requires and average 141 visits to the dealership per 100 cars each year, which is terrible compared to other models in its class that ranged from 33 to 97 trips on average. Small problems such as cheap interior plastics breaking to larger issues such as window regulators and rear axles failing are reported. Electrical problems are common, and the power steering system is another area of concern for these vehicles, with numerous failures reported by owners.