The assaulters shouted abusive words with Islamophobic content as they drove past the mosque and called people attending Friday prayers as terrorists, Al Jazeera reported citing sources.
When others started chasing, the attacker was seen clinging to the car's bonnet in an attempt to get away.
Following the attack at Christchurch in New Zealand, British police have beefed up security around mosques.
"London will always celebrate the diversity that some seek to destroy ... I want to reassure the Muslim communities in London," Khan said.
"I have been in touch with the Met Police. There will be highly visible policing around mosques today, as well as armed response officers, as Londoners go to pray," he added.
Law enforcement officials and political leaders condemned the terror attacks and assured the Muslim community that they would be protected while they continue to practice their faith freely, The New York Times reported.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)