Motorists in Barnsley are being urged to step up their security following a spate of break-ins across the town.
Overnight on Monday into Tuesday, thieves broke into eight cars parked in Thurnscoe, Hoyland, Athersley, Ward Green, Darfield and Hemingfield.
Six of the eight cars had been left unlocked.
A sat nav, mini disc player, power tools, alloys and number plates were among the items stolen.
Chief Inspector Andy Hodgkinson, of South Yorkshire Police, appealed to motorists not to make life easy for criminals.
“New fobs mean drivers don’t physically have to put the key in the lock when they secure their vehicle.
“But we’d urge them to check that the vehicle is locked at night and then keep keys out of sight.”