IMR Inc. recently expanded its Installer Survey to include more source and parts category information. IMR's new data shows the level of satisfaction independent repair shops have with key attributes of their top suppliers.

This week, we look at data for shops that consider a WD to be their "first call." The number 1 is the attribute that shops say they are most satisfied with; the number 14 represents the attribute with which they are least satisfied.  As the chart shows, trust is at the top of the list of qualities shops look for in a WD supplier.

The WDs include: NAPA, CARQUEST, Uni-Select, Pronto, Parts Plus, WORLDPAC, Auto Value/Bumper to Bumper, Federated.

Next week, we look at the data for shops that consider retailers to be their first call.

For more information on IMR Inc. and its 2012 Repair Shop Syndicated Research, go to www.automotiveresearch.com.