A private car; an automobile owned and used by an individual or family for personal use (not for commercial or official purposes).
彼は毎日自家用車で会社に通っている。
He commutes to work every day by his private car.
自家用車の維持費が思ったより高かった。
The cost of maintaining a private car was higher than I expected.
週末は自家用車で家族と遠出した。
On the weekend I went on a trip with my family in our private car.