Victims have taken to social media to express their anger, whilst asking residents in the same position to report it to police as soon as possible.
One resident told the Observer that her car was broken into last night but 'fortunately nothing had been taken' as she had no valuables in the car.
"There was a huge string of car break ins in Bracklesham Bay over night," she said.
"It seemed they went round the entire village."
On the Bracklesham community page, community officer Drew Allardice wrote: "I have had two more reports of vehicles broken into in Barton Way and Elm Close. Nothing taken. If you have been a victim, please report it to the police. Do it online. It's easier and quicker."
There have also been reports of break-ins at Sussex Grove, Legion Way, Tideway, Beech Avenue and Garden Avenue.
Sussex Police said it has received four reports of break-ins to vehicles in overnight on Sunday to Monday (February 17-18). The spokesman said: "The cars appear to have been targeted between 10pm and 7am and it is understood that in three of the four cases the vehicles had been left unlocked.
"A coat, money, driving licence and an iPod were stolen from three of the cars, but nothing from the fourth. "Anyone with information about any of the incidents is asked to report online or call 101 quoting serial 645 of 18/02."
Chichester Police had earlier warned people to be 'extra vigilant'.
A spokesman said: "Patrols will continue but please remain extra vigilant and report any incidents or suspicious activity. Please phone 999 if a crime in progress or 101 after an event."
Was your car broken into? Let reporter Sam Morton know by calling 01243 534166 or by commenting on our Facebook page.