On May 4 residents reported to Greenwich Police that their 2013 Audi S6 had been stolen.
It had been left unlocked in the driveway with the keys inside in the 200 block of Taconic Road.
In a separate incident on Lockwood lane on May 3, someone entered an unlocked car in the overnight hours and took a backpack and wallet.
Police remind residents not to leave valuables in cars and to lock them and take the keys inside.