YOU SAID:

Im pretty certain that there was a car outside a few minutes ago.

INTO JAPANESE

数分前に外に車があったことを確信している。

BACK INTO ENGLISH

I'm sure there was a car outside just a few minutes ago.

INTO JAPANESE

ほんの数分前に車が外にあったと思います。

BACK INTO ENGLISH

I think the car was out just a few minutes ago.

INTO JAPANESE

ほんの数分前に車が出たと思います。

BACK INTO ENGLISH

I think the car just got out a few minutes ago.

INTO JAPANESE

ほんの数分前に車が降りたと思います。

BACK INTO ENGLISH

I think the car just got off a few minutes ago.

INTO JAPANESE

ほんの数分前に車が降りたばかりだと思います。

BACK INTO ENGLISH

I think the car just got off a few minutes ago.