An 18-year-old who is accused of driving a car that hit and injured a crowd of Newcastle Knights fans has been served with eight more charges.

P-plater Indika Bambrick Samarasinghe allegedly injured 10 people during the incident on October 3, including a five-year-old girl.

Thousands of fans had lined the streets to wave the Newcastle Knights off to their first NRL grand final in 25 years.

The new charges include dangerous driving occasioning grievous bodily harm, negligent driving occasioning grievous bodily harm, and six counts of causing bodily harm by misconduct using a motor vehicle.

This brings the total number of charges to 17.