Engine Turbo-charger problems of the 1996 SAAB 9000

1996 SAAB 9000 aero rear-ended an izuzu rodeo. Damage to the rodeo was almost unnoticeable. SAAB engine however erupted into flames and was a total loss. A factory certified technician less than 30 days prior to fire had serviced SAAB. Response from SAAB customer service - the issue did not concern SAAB and was between my insurance company and me. Was told by SAAB that insurance company would subrogate the claim if they thought it was worthwhile. Insurance company (metlife) commented that loss was not large enough to pursue subrogation. Observed no concern that a problem could exist and ran into complete denial of any responsibility. Concern is how and why it could have happened and under similar circumstances will others be in danger of a like hazard. Incident is well document via digital photographs along with extensive detail from conversations with SAAB.