My Premier has 5 levels of how much it turns it up/down. The BMWs are built to ride so quiet, its pointless to have it. When I did use it, I had it on 1 or 2. I could see 4-5 working rather well for a convertible, but other than that, its annoying.
Some GM vehicles have a version called SCV...Speed Control Volume, it works pretty much in the same fashion as the Premiers, in that it has 3 steps and off.
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