|
I'd look less at Subaru vs Toyota measures and moreso of the fundamental design and the end product of that design. Arguing over who made what has always boiled down to juvenile semantic BS.
It's a boxer engine placed on a sports car that's naturally aspirated and RWD on a lightweight platform manufactured by Subaru, designed by both Toyota and Subaru. In general for the rest of the car, there's a parts list on this forum that shows like half the components being made by Toyota as well, but I can't seem to find that right now.
Based on the long term anecdotes of owners, the FA20s are miles better than the old EJs. However they generate a lot of heat, have had reported oil pressure weaknesses Within 1000 RPM of OEM redline. As stock they appear to have be slightly less able to be wrung out freely without concern than some other vehicles. Being a sports car however, subjects them to a lot of stresses that most other cars won't face. However for most to have lasted as long as they have now, alongside numerous FI applications suggests a generally feasible engine for both performance and regular usage. Throwing a rod appears to be the Achilles heel as a result of a weakness at a reduced oil pressure near redline combined with oil temps under sustained high RPM driving without adequate cooling measures.
It's worth noting that the FA20 design more or less made Subaru abandon the EJs in their lineup (to my knowledge) except for the STI.
Both transmission types are fairly reliable and similar in capacity for performance. The MT is a one off design strictly for this car, and appears to be less capable of holding additional power, but can be fixed? with the aftermarket. Both are currently lasting the duration of this car under stock to NA modded circumstances.
Pretty much everything else about the car has had no major, repeated points of failure. And that the manufacturing process has not resulted in any consistent issues as well.
My personal conclusion is that everything about the car will last as long as any old, well maintained car except for the engine which is slightly more fickle due to its inherent mechanical design. However, the issues discussed above only affect a small minority of drivers and are easily remedied with aftermarket oil cooling and or care of the engine.
|