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EJ25
- The EJ25 is the most problematic WRX engine of them all. Unfortunately, they are so unreliable and prone to premature failure that WRX and WRX STI owners brought a class-action lawsuit against Subaru. The lawsuit alleges that the EJ25 has faulty rod and crankshaft bearings prone to failure long before the reasonably expected lifespan of an engine.
www.vehiclehistory.com/articles/subaru-wrx-engine-is-it-reliable
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May 4, 2021 · AutoSnout.com. The first generation of WRX were serious performers, especially for the time. They had 237 horsepower and were pulling in 0-to-60 times around 5 seconds. Remember, this is like 1992. A C4 Corvette could only pull a 0-to-60 time of less than 6 seconds if it was a really good day.
This model is the first of the WRX line to deviate from the EJ-series engine. It uses the new 2.0-litre FA20F engine, which has direct injection and a twin-scroll turbocharger. On all previous WRXs, the turbocharger was located near the right-hand side of the firewall, close to the third cylinder.
Jan 28, 2024 · In truth, the issues you hear about, namely head gasket failure, are largely only an issue on the 2.5-liter EJ engine found in the WRX STI. The EJ20's thicker cylinder sleeves and superior...
- Braden Carlson
- Is A Subaru WRX Engine An interference engine?
- How Does A Subaru WRX Engine Work?
- How Long Do WRX Engines Last?
- How Should I Break in A Subaru WRX engine?
- Are WRX Engines Reliable?
An interference engine allows the pistons and valves to operate within the same space, improving fuel efficiency and power. However, if the timing is off or the timing belt breaks, the engine can be severely damaged. Subaru WRX enginesare all interference engines.
The Subaru WRX engine has a turbocharger to push more air into the cylinder, increasing the power from every stroke. The boxer engine pushes the pistons back and forth on a horizontal plane, reducing vibration and increasing performance and handling.
Though reliability ratings are low, the Subaru WRX engines seem to be the least of owners’ concerns in online reviews. Several reviewers mention good reliability and dependability, suggesting the engines tend to have a long life span overall.
To properly seat the rod bearings and piston rings in your engine and to prevent future oil leaks, your Subaru WRX engine should be driven 1,000 miles of variable rpm driving, but not exceeding 4,000 rpm.
Though the WRX delivers a lot of raw power, it doesn’t get very good reliability ratings, receiving only two out of five starsfrom Consumer Reports.
Jul 1, 2021 · The first WRX models to hit domestic soil had an EJ engine known as the EJ205, which was a 2.0L DOHC turbocharged engine that produced somewhere in the vicinity of 227 horsepower factory rated. This engine was very reminiscent of any other EJ platform that had come before it as far as how the block looked physically and how it went together.
May 21, 2021 · If you are looking for the most reliable Subaru WRX engine then there are really two options that would be good to look at. The first is the North American 2.5L turbo charged engine. This has fewer problems than the 2.5L motor that does not have a turbo.
Jun 10, 2021 · The most common problems that are reported about the Subaru WRX are generally engine problems. The engine's internal components have been known to fail. There are many documented cases of turbo failures on the engines which lead to a loss of boost.
