1. Floorplan costs The more dealers you have, the slower the inventory turn. The slower the turn, the longer it takes to repay the debt. The longer it takes to repay the debt, the more money that’s required. By cutting dealers, the manufacturers cut GMAC’s capital requirements, which run into the billions.
2. Inventory Excess inventory ties up capital and increases the burden of the floor plan, due to the longer sales cycle. (Chrysler and GM have far higher days of inventory than Toyota, Honda, BMW, et al. All that metal sitting around wastes a lot of money delaying the conversion of assets to cash). If the automakers have fewer dealers to serve they should be able to produce fewer vehicles.
3. Resale value More dealers means more competition within the brand which means lower transaction prices.
4. Profit at the dealer level One would hope that you end up with better dealers if they can make more money (although that’s debatable).