Let me get this straight, you went in for a coolant leak but all of a sudden suspension work was needed?
So you said the vehicle was driving normally before but different after the Christian Brothers work?
Were they up-selling the suspension job?
If it was driving normally I would have just had the leak fixed unless they had you by the balls because it had to be done to pass inspection or something if your state requires that crap. Don’t ask how I know, unlucky me.
I don’t know anything how Carmax care works, but the Christian Bros got paid. I don’t know how a car leak leads to suspension work. You don’t seem the type to get taken for a ride, but they really stuck it to you.
If the car was riding right, I would have been like hell no, just fix the leak WHICH they didn’t even do right.
Also on the other hand, I don’t know if you and your family are the type who drive over speed bumps as if they were not there. Some don't care about road conditions like the occasional pothole or hitting curbs until costly repair work is needed.
Personally I only had 1 oem shock leak but did change both in the 13 yrs of owning my Rogue. And the control arms to PASS inspection even though my Rogue drove normal. Another lady also needed hers changed too that day. Must have been quota month. Even if my control arms were bad, it was driving normally. I feel it should have drove funky or dangerously at the time.
Hence, my suspension is oem original. But I do accidentally run over curbs, potholes, or drive thru unpainted speed bumps.