The incident happened in Oakfield Lane just after 8pm yesterday (June 14).
Officers and South East Coast Ambulance Service crews were called to the scene.
The teenager was found with minor injuries and taken to hospital for further treatment.
Road closures were put in place as the incident was dealt with but has since reopened.
A spokesperson for Kent Police said: “Just after 8pm on Wednesday 14 June 2023, Kent Police was called to a car colliding with a stationary vehicle in Oakfield Lane, Dartford.
“Officers attended alongside South East Coast Ambulance Service and a teenager was taken to a local hospital with minor injuries. The road was cleared by 10.20pm.”