We monitor several hundred automotive GBPs through a Looker/Jepto connection, and focus monthly on GBP search queries for each of the departmental profiles. Yes, we advise separate GBPs for sales, service, body shop, parts, Quick Lane (for Ford dealers) and even used cars if you have a separate building and mailing address (I know that
@Greg Gifford may disagree, but we have them for several dealers, for several years, and their search queries rock!).
When optimized properly, the search queries for each GBP are differentiated, since we have zero overlapping categories. For sales, the queries will be branded, plus "Ford dealer near me", etc. For service, it could be tire-related search (agreed strongly
@JoyHawkins most dealers aren't optimized). However, over the last 18 months, the fixed operations (service, body shop, etc) search queries have been lower in volume, and less relevant to the categories, not sure what is causing this. It is as if the fixed ops GBPs are simply showing up less for relevant fixed ops queries.
For the Service Department GBP, there is also monthly work requiered to curate the suggested GBP "services" that Google will suggest. Best practice is to approve all services relating to fixed ops, and say no to any that would relate to sales, parts, body shop, etc. You want clean delineation on the departmental profiles.
When creating those departmental GBPs, Google will ghost them until you get at least 20 reviews and 20 owner photos. We track views and actions on GBPS, and that is the inflection point when the department GBP will start showing up.
As far as driving reviews to the various departmental GBPs, OEM approved vendors like Reputation.com and Podium can fork the transactions in the Dealer Management System (DMS), so that the sales transactions drive automated surveys for improving the sales GBP reviews, and the closed repair order (RO) customers are driven to the sales GBP. Reputation can fork an unlimited number of times for $100/month for dealers, so a no-brainer. Once a dealer implements this, an average single-point Ford store should drive double digit monthly reviews to both sales and service dept. GBPs, while parts and body shop will also trickle in (less transactions). Most dealers process 3-4X the number of ROs, as cars they sell, so eventually the Service GBP should receive most of the reviews. Yes, it can be hard to maintain 4.5 to 4.7 stars for service, but top operators do this consistently.
One last thing, the reason you see so many car dealerships with chauffeur service, is that category was originally named "Car service", and plenty of people got this wrong. Including Ford themselves, when they automatically set up thousands of Ford service GBPs for their dealers 5 years ago. We usually find this mistake with Ford dealers. Maybe someone tipped Google to be more descriptive with that category?
I hope this is helpful Joy, thank you for all of your great content, we share it regularly with our customers!
-George