Slow June sales led the supply of U.S. vehicles to swell to 67 days July 1, up from 63 days one month earlier. About 60 days is considered ideal.
The traditional Big 3, although holding steady at a 79-day supply, continue to report the most inventory.
General Motors, the Chrysler group and Ford Motor Co. had a combined 2.6 million units in inventory July 1.
GM managed to trim supplies to 73 days, down from 84 days June 1. Significant drops in the Impala and Cobalt led to a 54-day supply in GM cars, down from 73 days June 1. GM light trucks fell from their 93-day supply perch to 88 days.
The Chrysler group posted a 91-day supply, up from 77 days a month earlier. Sharp increases in the Chrysler 300 supply, which rose from 78 to 133 days, helped Chrysler group car supplies swell to 69 days, from 48 days June 1.
Ford Motor also saw an increase in inventory, posting an 81-day supply, up from 73 days June 1. Ford's light trucks climbed to a 96-day supply.
The three largest import automakers also saw increases in their vehicle supplies.
American Honda Motor Co.'s vehicles increased to a 47-day supply, up from 38 days one month earlier.
Toyota Motor Sales U.S.A.'s supply rose to 33 days, up from 29 days a month earlier.
Nissan North America, sparked by a 101-day supply of its Titan pickup, had a truck supply of 82 days and total supply of 68 days.
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