Service screens at the council-owned car parks across Quay Road, Cross Street, Cowes and Moa Place, Freshwater were supposed to display the council website, but hackers changed several of them to show explicit images.
The Isle of Wight County Press first reported the incident, after being notified by its readers.
A council spokesman has made a statement on the issue:
“We are saddened to learn that a third-party web address displayed on our electric vehicle (EV) signage appears to have been hacked. A council officer will be visiting the EV signage today and tomorrow to ensure the third-party web address is covered up. The council would like to apologize to anyone that may have found the inappropriate web content, and for any inconvenience from charge points out of action.”