The Google Search result for the business on the map above using the search phrase "auto repair" in one of the neighborhoods looks like the image below.
Thanks to SEO experts in the industry, we know what CTR each position in Google Search Results can create. For example, in the image above, Ryan's Servicecenter appears three times on this page, with a total CTR of 15.4% + 23.7% + 10.2% = 49.3%. That means half of all visitors are expected to click on one of Ryan's Servicecenter appearances on Google search.
Since the GBP, the website, and even business directories can feature businesses on Google search, it is easier to use CTR instead of ranking.
In short, all measures to maximize CTR are welcome as long as they are cost-effective.