Users' questions

What are the most common problems with Subaru WRX?

by Rhyley Bryan

What are the most common problems with Subaru WRX?

Below are a few of the most common problems with the Subaru WRX and WRX STI:

  • Engine internals.
  • Turbo failure.
  • Oil leaks.
  • Misfires.

How do I know if my differential is going bad?

Here are the most common bad differential symptoms to look out for:

  1. Your vehicle is quickly going through oil.
  2. Difficulty steering.
  3. A loud front differential noise, such as the grinding of gears, clunking, or a “howling” sound.
  4. Rear differential noises.
  5. Extensive and inexplicable wear and tear on your tires.

What goes wrong with WRX?

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.

What causes a bad center DIF on a Subaru WRX?

As im sure you know, the center Dif tries to split power to the rear/ front. Apparently when you have slippage and grip simultaneously in the rear and front this can cook the fluid quickly in the Dif causing it to fail. Apparently this was the cause of the problem, and the tech said symptoms matched.

What kind of engine does a Subaru WRX have?

A few known weak points include: These issues appear most common on the 2004+ EJ255, EJ257, and FA20 engines. There have even been some lawsuits regarding internal engine issues on these engines. However, all Subaru WRX and STI engines may run into these problems.

Are there any problems with the Subaru WRX STI?

Below are a few of the most common problems with the Subaru WRX and WRX STI: We’re calling these the most common problems for a reason. It doesn’t necessarily mean the problems are common and affect a large percentage of WRX’s. Rather, when issues do occur these are a few of the common areas.

What causes a Subaru WRX engine to misfire?

Spark plugs and ignition coils are without question two of the most common causes of WRX misfires. Leaking or faulty injectors may also cause misfires. Finally, newer direct injection (DI) Subaru engines can have misfires due to excess carbon build-up. Carbon build-up usually isn’t a problem on the WRX until close to 100,000 miles.

https://www.youtube.com/watch?v=cJBu9fUlKcg