The answer depends on your group size. For a same day Agra tour, a private cab works well for solo travelers and couples. But for groups of 8 or more, a tempo traveller is the more practical and comfortable choice.
The Delhi to Agra distance is around 230 km, so the round trip means 7 to 8 hours of driving on the Yamuna Expressway. In a tempo traveller, everyone travels together, which avoids the hassle of multiple cabs arriving separately. There is more space to rest, and one driver makes stops
