The American auto industry nearly collapsed during the recession as car sales plummeted and companies struggled to stay afloat. Since then, U.S. car and light truck sales have steadily increased, reaching 1.6 million in May, up 11% from the year before.

Despite the general recovery, demand for some vehicles continues to underwhelm. According to figures from TrueCar, an auto industry information and technology platform, 15 models spent an average of at least 90 days on dealers’ lots before being sold. No car took longer to turn over than the Volvo S60, at an average of 155.5 days.

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Days to turn is useful metric for gauging inventory levels, Eric Lyman, vice president of industry insights at TrueCar, explained in an interview with 24/7 Wall St. “The clock starts when the car lands at the dealership,” Lyman said. This levels the playing field, he added, because production facilities for various carmakers are located at different points across the U.S. or even in foreign countries.

According to Lyman, several factors may contribute to rising inventory levels. Some of these are temporary factors, such as the switch to a new model year. Because TrueCar data for 2014 covers cars in their 2014 model years, it makes sense that turnover rates are lower for models such as the GM’s (NYSE: GM) GMC Yukon, Chevrolet Tahoe, and Cadillac Escalade, all of which have released newly overhauled 2015 models.

In other cases, Lyman added, “high inventory is going to be [due] to a disconnect between the sales goals of the manufacturer and the retail demand for those units.” In some instances, manufacturers overestimate demand for their brands and ship too many units to their dealers. This results in high inventory and turnover levels for the brands.

Many of the brands that take the longest to sell are unpopular with customers, Lyman explained. Both Mitsubishi and Scion have car models that take the most days to turn. Both were also two of the nation’s lowest rated car brands, according to J.D. Power’s 2013 Automotive Performance, Execution and Layout Study, which measures brands’ appeal with car buyers.

Cars from Cadillac, Ford’s (NYSE: F) Lincoln, Jaguar and Volvo, all of which ranked in the bottom half of premium brands, according to the study, also made the list. Only one of the cars with the highest days to turn, the Chevrolet Tahoe, was manufactured by one of the survey’s 10 highest rated non-premium brands.

Although there are differences in how brands are perceived, Lyman added that disparities in actual quality among various brands is often relatively small. Five of the 10 cars requiring the most days to sell were made by brands with above-average scores on J.D. Power’s 2013 Initial Quality Study. Leading these brands was GMC, maker of the Yukon, which trailed only Porsche for fewest problems per 100 cars, according to the Survey. Only three models belonged to brands with scores considerably below the industry average, although one of these, Scion, was the lowest-rated brand in J.D. Power’s survey.

Based on figures provided by TrueCar, 24/7 Wall St. reviewed the car models with the highest number of days to turn. TrueCar turnover and sales data for each model reference a particular model year — figures for 2013 apply to cars in their 2013 model year, while figures for 2014 count data for 2014 model year vehicles. TrueCar also provided sales data for each of these models. Manufacturer’s suggested retail price (MSRP) data are from manufacturer’s website, and refer to the newest model year. We also relied on information from J.D. Power and Consumer Reports surveys, and the American Customer Satisfaction Index (ACSI). Safety data are from the National Highway Traffic Safety Administration (NHTSA) and the Insurance Institute for Highway Safety (IIHS). Sales figures are from The Wall Street Journal,  as well as various company press releases.

These are the 10 cars Americans don’t want to buy.