Vandals poured brake fluid on two cars in a late night attack.
The yobs struck at about 12.30am at Rylands Road, Ashford, last Thursday.
South Kent Police spokesman Rosy Alexander said: “A dog walker witnessed two people pouring the substance over two cars.
"We have not had reports of any other similar incidents in the area. Investigations are continuing.”
Firefighters were called to hose down the cars to ensure the safety of children using a nearby play park and nursery.