8 more reasons for Detroit to worry

Carrying new car inventory means floor plan expenses for both dealers and manufacturers and disappointment for customers as cars rot on the lot. The average domestic dealer was carrying 68 days supply on May 1. While you would expect import dealers to carry more inventory because of longer supply lines, they get by with far less. European and Japanese makers each clocked in with 49 days supply on the ground, as measured by Automotive News.

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