Ideally, every dealership should be able to manage recon at a four-to five-day level, independent of volume. Some exceptional stores are able to operate in a three-day range by keeping service at a four-hour average and detail/photos to an eight-hour average. To consistently and verifiably deliver these metrics, there must be an accurate measurement of all vehicles as they complete each step all along their way to the from line.
The two most important factor in any effective recon system are ease of use and balancing the workflow, starting with Fixed-operations, where most of your recon cost take place. If you get this right, a three-to four-day average is within reach.