In my experience 100% we get treated differently.
Wanted to test drive a Skoda a few months ago and didn’t receive a single call back after leaving my details 3 times and being promised a call.
Over the last 2 weeks I’ve contacted Cupra via the online form and left details by phone twice and no call back. Then decided not to mention I was a motability customer and just like that within 24 hours I have a test drive set up for next week.
Doubt it’s a coincidence.