The head gasket has a high failure rate due to cooling system problems. Subaru is aware of the problem and has extended the warranty to 8 years/100k miles on many vehicles.
Resources for the Repair and Maintenance of your 2004 Subaru Baja
2004 Subaru Baja
2004 Subaru Baja Problems
2004 Subaru Baja Recalls (Recent)
RepairPal Expert Overview:
On 26 vehicles, the engine oil control valve cover may not have been tightened properly, which could allow oil to leak. If leaking oil contacts hot engine components, a fire could result in the engine compartment. Dealers will inspect and retighten the oil-flow control valve cover bolts. The recall began October 8, 2004. The Subaru recall number is WWU-05.
2004 Subaru Baja Questions and Answers
During the shifting from 2nd to 3rd gear a quick noise (sounds like fanning a deck of cards). Only happens between those two gears, when car is automatic D mode, fairly consistently. Does not happe...
Does 2004 baja turbo have a tinimg belt or is a chain
Comments show that this head gasket problem is a known and recognized problem on 2004 Bajas. As such, system indicates warranty extension on "some models" with fewer than 100,000 miles an...
my first thought was a broken belt of some sort as they have been squealing lately
2004 Subaru Baja Reviews
Fun car. Plainer the better.fast enough -- Non- turbo here with a more than a few miles. So, I don't have to worry about premium gas and added maintenance cost. Very functional bed, easy to lower and lift most things and the bed extender with cargo hole will allow a person to get almost anything they want from LOWE'S. Groceries are a cinch. rugged interior with a lot of child safety features built in. AWD all time gas mileage isn't bad.