Also, categories, one on how the sales was done, quotes were detailed or piece of paper, so that once you sign you see extra charges or not as you remember the offer. If one felt you didn't get the price you thought you were or services that was promised on sell of truck to you
Another category for service, dealer did the job right, went and check on other things, to be sure all is okay, up to date firmware, etc. Uconnect firmware up to date without asking. Perhaps during oil changes, they freely check for water in fuel filter, since your unit is on the hoist. Not to do that I would classify as being very cheap and a 1 star out of ten. 1 being very bad. Zero, total loser service.
Another category for Reliability, how many times you went to have vehicle served, the issues, covered under warranty, did they cheap out or added a bit extra service. What parts were replaced.
Another category for Total Failure, new engine or internal parts, transmission. FCA would carry the brunt of this report
The member login name would be attached to each review/rating, allow other members to ask further questions, details. Need to avoid spam or anti brand groups like samsung hires to falsify the results or restaurant reviews that are bought and paid for.
Once the dealer know that they are being reported on good and on bad by real people, they may start behaving as customer expect them to behave, honesty and complete good workmanship.