Not sure if I understand the question but in Jan my car count was 178 and Feb was 179. My ARO Jan $159, Feb $238 (hired master tech and his apprentice and they do awesome inspections - reason for the jump in ARO)
Now March was when I increased Adwords budget and started campaigning like crazy bc of the new shop. Yelp ads I kept at $425 and I boosted Adwords from like $1000 to $2000-$2500, also spent $50 on a couple small Facebook campaigns. March car count was 261 with $229 ARO. March was also when my second shop became fully open. 55 out of 261 cars were from the new shop. March of LAST year my car count was 129 with $229 ARO
I broke a lot of records in March, total sales, GP and car count. Previously my record total sales for the month was low $40's. I was like $200 shy from $60k in March, and that's with nearly $10k sitting ($2400 head job just booked out today). Only thing that I have really seen work is Google. Yelp brought me a decent clutch job so far this month. Word of mouth is good too, got a $1,000 timing belt job coming Wed that is a referral.
What I noticed after opening a second location is that my first shop started ranking better on Google (could be my imagination....) but if I type in "auto repair durham nc," I am #6 on the list and the ones before me have been open for YEARS. It's just now been a full year for me. If you sort by ratings of 4+ stars, I am #3 on the list. I think having more than one locations gives a perception of less risk for the customer and they are more likely to try out your shop.