No, that's incorrect. There are many English dialects (in the US, the UK, Australia, etc.) in which the final R is silent.Bueno, creo que en ingles en cualquier parte debe pronunciar la letra R al final de una palabra en ingles.
In some accents of British English this is true. In other British accents (e.g., those of Scotland, or Cornwall), this is not at all true.In British English, the final -r ( car, star) is not pronounced if there is no following word beginning with a vowel.