Are STI Motors reliable?
The WRX STI has had well-documented issues with its EJ25 2.5-liter turbocharged Boxer engine. There have been a number of lawsuits over premature engine failure due to a defect that allowed contaminated oil to carry “damaging metal debris through the engines,” according to court documents.
How long do built Subaru engines last?
They can last forever if you take care of them, even if you abuse it, expect it to go past what you’d expect. At 100k+ once the head gaskets (timing belt etc.) have been replaced and that mess has been fixed, the thing is basically good for another 100-200k.
How long does a built motor last?
Depends on what level of build your talking. I’ve seen several modestly built Rovers go well over 100,000 miles, but that may be in part due to the fact that the stock ones were so underbuilt. I’ve also seen overbuilt ones last less than 1000 miles. Chasing 300 HP in one is a recipe for problems.
How long do Subaru STI engines last?
While results will vary and the big variable is always how well the car has been maintained, what I can tell you is a Subaru is capable of going 300,000 miles. And if you are a regular maintenance type of owner you should expect to get that type of mileage out of it.
Will a built engine last longer?
A fully built motor, if built with the right parts and properly, should last as long as a stock motor if used under the same conditions as a stock motor. Of course, there will be several factors that can change longevity on a fully built motor. High compression or boosted applications.
What is a fully built motor?
See all 12 photos Historically, the term “fully built” has been used to describe the degree to which an engine’s been strengthened by way of stronger internal components, and according to Ron Bergenholtz of Bergenholtz Racing, typically consists of things like forged pistons and connecting rods, more durable head studs …
Are boxer engines reliable?
Due to the low, wide mount, the boxer engine can prove difficult to service. Even changing spark plugs can be a substantial job. However, boxer engines are known for their reliability, and should require less service than most other engine types.
What is high mileage for a Subaru STI?
Most Subaru models can be trusted to run, without major issue, for about 150,000 to 200,000 miles. That’s as long as owners perform routine maintenance and care of those vehicles.
