At least nine people were killed and 32 wounded on Tuesday when a car packed with explosives was detonated in a district just north of Baghdad, security and medical sources said.
There was no immediate claim of responsibility for the blast in Rashidiya, but Islamic State regularly carries out such bombings in the capital and other parts of Iraq, where it seized large swathes of territory in 2014.
Baghdad is on high alert for attacks after a blast in the central Karrada district on July 3 killed at least 292 people, making it one of the deadliest bombings in Iraq since US-led forces toppled Saddam Hussein 13 years ago.
Islamic State has turned increasingly to ad hoc attacks, which US and Iraqi officials have touted as proof that battlefield setbacks are weakening the militants. But critics say a global uptick in suicide attacks attributed to the group suggests it may adapt and survive.