Well it's just a "wait and see" thing. I'm fully aware that the BF1 sound is weak. But it wasn't possible to make it sound good within the limits of the current system. There is experimentation that needs to be done. And the nature of experimentation is that I don't know what the results will be, so I can't estimate how long it will be until there are some better sounds available for you.
All I can say is (as I've said at least twice already) there's more to be done. I am not deaf so I can hear as well as anyone else that the BF1 doesn't sound like a F1 car. I'd also like to point out that it will never really sound like an F1 car - as anyone who has heard one live will tell you... when I heard the first one go past in the grandstand of a F1 race, everyone I could see was instantly in a panic trying to get their earplugs in before the next car came past - and if they couldn't get the earplugs in, then they just had to cover their ears for the next car then try again with the earplugs before the third car. It's that painful (or at least it was at that time... I don't know if they are quieter nowadays).
Speakers and headphones just don't make that kind of noise. Now that is NOT an "excuse" for the current BF1 sound. There are ways to make it better and that's what the experimentation is about. Next question : "are all the other cars acceptable". No, of course they will be improved as well.
Sorry but all you can do is wait and see. I'll be experimenting and I'll be seeing what comes out as well - what and when that will be, I don't know.
I'm pleased to know from this poll that around 70% of people think they are an improvement. So they should be - they are done a much better way than in the old system. And that's encouraging. And it's nice to know that V is better than U in nearly all ways. So just stay calm a bit - the V sounds are better than they were in U - they're moving in the right direction so it's time for you to relax a bit - not get worried.