"I want two cars" wasn't accepted.
edit: might be because I used a lower case 'i'. It worked second time round.
Did you report it? Lowercase letters will only be marked as a typo, but not wrong. There is a report for the sentence 'i what two cars', which might have been yours?
I cant say this with confidence, but i think 'want' is translated differently than 'am wanting'
that would be very uncommon for a gaelic verb.