Translation:I want to drink a coffee.
In American English, we would not say "I want to drink a coffee" maybe a cup of coffee or just coffee
In the UK (or at least where I live), it is natural to say I want a coffee, but not I want to drink a coffee. (What else would you be doing with it? Throwing it on the wall, cleaning your monitor / tablet.. )
Just as the others said: no English speaker would say that.
i totally agree with the others on this.
I would like some coffee please