Of course it's a regional dialect. What else could it be?

I show you some examples: English: Do you want a beer? Italian: Vuoi una birra? (In this case “vuoi”, the letter v is followed by the vowel "u" so you read the word as "wuoi") English: I play the violin Italian: Suono il violino. (In this case you read the word as “vi”)

Hi John. Your question does make sense but definitely it's a bit vague anyway: you didn't quote any context as for to set your question into. Luckily I know some southern dialects so I guess you're referring to the Neapolitan pronounce -- given that a dialect actually influences the pronounce of a standard language. Neapolitan is spread accross the greatest part of south Italy as a group of dialects, and in any case was a standard (> bureaucracy) language before national unity. Moreover, the typical southern pronounce was a "fact" even during Latin ages, so that, for example, coins made from south Italy might have been written according to the pronounce. That overall means that it's a very strong cultural factor. Some peculiar aspects include stressing on a consonant which results doubled (Siberia > Sibberia) and stressing on a diphtong so that we hear much more one of the two vowels (cieco "blind" > cI.Eco); and in your case *vuole "wants" > vU.Ole. Now these things deserve a quite complex study: why does it happen? which quantity of syllable is necessary to produce- and which position is affected, etc etc which is Linguistics (you may find some, starting from Wikipedia, I'm sure). So, the transformation *vuole > WU.Ole, which seems you are very sensitive to, is likely to be referred to a Neapolitan accent.

I would pronounce "wuole" and "vuole" in the same way tbh, do u have any example to hear on forvo or somewhere?