Part of the credit for the increase goes to the pickup truck and commercial van sectors, where sales jumped 10% and 19%, growth far in excess of the industry's 6% uptick.
U.S. SUV/Crossover Sales Rankings By Model - 2015 Year End
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But the 16% year-over-year improvement reported by SUVs and crossovers, equal to 850,000 extra sales compared with 2014, was the real engine powering the train forward. As a result of the huge uptick in SUV/CUV sales, the sector's share of the overall industry jumped from 32% in 2014 to 35% in 2015.
If passenger car volume slid a further 2% in 2016 and SUV/CUV sales once again jumped 16%, cars would be outselling utilities by fewer than 40,000 units per month over the next year. If the trend held one year longer, cars would be significantly less popular than SUVs and crossovers as soon as 2017.
Indeed, depending on which vehicles you tabulate with passenger cars and which vehicles you consider to be an SUV/crossover, it's possible that utility vehicles already outsold cars in the U.S. It's become a regular feature in the Canadian auto industry at the tail end of the year, as well.
As for the top of the ticket, SUVs and crossovers are led by the Honda CR-V, Toyota RAV4, Ford Escape, Nissan Rogue, and Chevrolet Equinox.
Those five vehicles collectively generate a full quarter of all SUV/crossover sales in America.
All five broke their own one-year-old sales records in calendar year 2015, combining to generate a 13%, 181,960-unit year-over-year increase to 1,532,330 U.S. sales last year.
Timothy Cain is the founder of GoodCarBadCar.net, which obsesses over the free and frequent publication of U.S. and Canadian auto sales figures. Follow on Twitter @goodcarbadcar and on Facebook.