a little | a little bit | a bit
What is right and why?

May I keep your car...
...(for?) a little longer?
...(for?) a bit linger?
...(for?) a little bit linger?

Is the word "for" necessary here, or wrong?

Question

a little | a little bit | a bit
What is right and why?

May I keep your car...
...(for?) a little longer?
...(for?) a bit linger?
...(for?) a little bit linger?

Is the word "for" necessary here, or wrong?

Answer

I think you have misspelled 'longer' as 'linger'.
The 'for' is optional. I would use it, possibly in American English it would be less common.
All sound fine to me. Both the 'bit' variants are a little ;) informal - but that is OK in the context given. 'A little bit' is obviously minimising the intended time more than 'a bit'.