Common Subaru Fuel System Problems

  1. Denso Fuel Pump Failure

    The impellers inside of Denso branded fuel pumps may have been excessively exposed to a drying agent during manufacturing. This leads to them cracking, absorbing fuel, and deforming so badly that they stop sending fuel to the engine. Subaru…

    Continue reading article "Denso Fuel Pump Failure"
  2. What Are We Missing?

    We know there's more problems than this. Let us know which one you'd like to see us cover next.

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Where Fuel System Complaints Happen

Sometimes it helps just to tally up the complaints and see where the biggest stacks are. Use this information to learn about troublespots or to run for the hills.

Recent Fuel System News

There's a lot of news out there, but not all of it matters. We try to boil down it to the most important bits about things that actually help you with your car problem. Interested in getting these stories in an email? Signup for free email alerts over at CarComplaints.com.

  1. Are winterized fuels to blame for the stalling engines in 2017 Imprezas? If you ask Subaru, that's what they'll tell you.

    According to the automaker, while the car is stopped or moving slowly the winterized fuel begins to vaporize in the lines under higher ambient temperatures.

    When vapor builds up, the fuel pressure goes down which leads to rough idling, stalling, or even a problem starting the engine.…

    keep reading article "Lack of Fuel Pressure Causes Stalling in the 2017 Impreza"
  2. Subaru is recalling 3,200 brand new vehicles for a problem that could eventually lead to a fire.

    Subaru says proper tightening procedures weren't followed for the nuts that secure the propeller shaft to the rear differential. The automaker blames the problem on an improper use of the torque wrench.

    Looks like somebody in the Subaru factory is going back to "Torque Wrench 101." So how do some loose nuts lead to a fire? It's simple, really.…

    keep reading article "Gas Leaks Blamed on Torque Wrench Usage in Factory"