A campervan is on fire at the Shell petrol station in Fontwell.
Three fire engines are in attendance, along with Sussex Police.
A spokesman for West Sussex Fire and Rescue Service said crews received multiple calls to the fire at 9.30am this morning.
He said: "We received multiple calls from people this morning saying that a campervan was on fire on the forecourt of the petrol garage in Fontwell.
"Calls were also reporting that the fire had spread to the garage forecourt. Crews who were on the seen confirmed that was the case and that the campervan and forecourt was on fire.
"Three fire engines are currently in attendance. Four breathing apparatus are in use, a compressed air foam system and one jet."
The spokesman confirmed there were no reports of any injuries.
He said it was not yet known how the fire started.
Sussex Police has been approached for a comment.