Firefighters put out two suspected arson attacks on cars in different parts of the county on Saturday.
The first incident was behind the Bullnose Morris pub, in Ashmole Place, Blackbird Leys, at about 1am.
Five aerosol cans were found in the red Volkswagen Polo after the incident.
Firefighters from The Slade fire station tackled the blaze.
Another car fire in Upper Arncott village, near Bicester, was put out by firefighters from Bicester at 3am.
The car, on a driveway in Woodpiece Road, was seriously damaged.
Both incidents are being treated as suspected arson.
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