Green’s Dictionary of Slang

(US) submitted to an arson attack, burned out.

1977		J. Olsen Secret of Fire Five 67: ‘Suicide?’ I says without thinking. ‘No,’ the housewatchman says. ‘Torched.’.
1989		M. Dibdin Tryst 37: Heartless conmen, abandoned pets, ravished grannies and torched tramps.
1995		J. Stahl Permanent Midnight 319: I sold the torched Olds to the mechanic.
2001		(con. 1964–8) J. Ellroy Cold Six Thousand 170: Pete’s car was trashed/totaled/torched. No windshield. No hubcaps. No tires. No wheels.