Well, the English "V" is nearly identical to German "W"; the German "V" is nearly identical to English and German "F" and the English "W" doesn't quite exist in German. Someone had to point out to me as well that I was mispronouncing "water" as "vater" instead of "uuater" about ten years after I was somewhat fluent in the language. I never heard the difference before and native English speakers typically don't go around correcting the pronunciation of strangers….
