One problem related to gas recirculation valve (egr valve) has been reported for the 2008 Subaru Impreza Sti. The most recently reported issues are listed below.
At 15,500 miles, my 2008 Subaru sti experienced a ringland failure on the #4 piston. This was verified via a compression/leakdown test. A longblock replacement was approved by Subaru of America. My main concern, without taking engine components off, this mild cracked ringland was almost un-detectable. There was very little degradation in performance, for running on 3. 5 of 4 cylinders. In addition, my mechanic also found fuel in the oil pan.
| Engine And Engine Cooling problems | |
| Engine problems | |
| Engine Burning Oil problems | |
| Gas Recirculation Valve (egr Valve) problems | |
| Engine Exhaust System problems |