Sydney teen missing for more than a week

A western Sydney teenager has been missing for more than a week after he drove off in his dad's car.

Richard Ham, 17, was last seen leaving his Lidcombe home about 4pm on Saturday, February 21, police said.

His father's car was returned the next day, but Mr Ham hasn't shown up for work or been in contact with family, friends or co-workers.

He is described as being of Asian appearance, about 175cm tall with a muscular build and short hair.