Shropshire Fire and Rescue Service was called to Ketley Vallens in the Ketley area of Telford shortly before 2am on Sunday to reports of a car fire. Police were also in attendance.
One fire appliance was mobilised from Wellington and crews used a thermal imaging camera and breathing apparatus to tackle the fire.
Now, fire crews have confirmed that the cause of the fire was "deliberate".
A spokesperson for Shropshire Fire and Rescue service said: "At 1.53am on Sunday, May 28, Wellington crews dealt with a car fire in Ketley Vallens Telford.
"The cause of the fire is deliberate. If you have any information contact Telford Cops on 101 or Crimestoppers UK on 0800555111."