Generally, these engines are well-regarded for their durability; however, specific years within the late 1990s and early 2000s warrant caution. This design means that if the engine is not broken in properly—such as avoiding high RPMs before the break-in period is complete—it can lead to premature bearing wear.
Submodel Engine Avoid For Reliability: Key Years and Failure Points
Model Year Range Engine Code Primary Risk to Avoid 2008-2014 EJ257 (Turbocharged) Wastegate failure and piston ring lands 2004-2009 EJ204/EJ205 (Turbocharged) Oil pump failures and head gasket issues 2015-2020 FB20 (Direct Injection) Carbon buildup on intake valves Direct Injection Complications. Because the cylinders are on their side, components like rod bearings and the oil pump are subjected to different gravitational forces.
Additionally, the tight packaging of the engine bay means that diagnosing issues often requires significant labor, making preventative maintenance the most cost-effective strategy. The primary concern centers around the timing belt system and head gasket integrity.
Submodel Engine Avoid For Reliability
The most common failure points in these engines involve the turbocharger wastegate actuator and the intercooler piping. 6-liter units in the original Impreza to the robust 2.
More About Subaru engines to avoid
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