I am filing a safety complaint regarding an Engine Control Module (ECM) failure in my 2017 Subaru Impreza and the handling of a prior recall repair. Dealership records show that a recall repair (WRE21 – ignition coil recall) was completed in June 2021. At that time, the dealership documented that the ECM calibration was up to date and functioning properly. However, I later experienced a check engine light and drivability concerns. Diagnostic records from February 2026 indicate: •Camshaft slow response codes •Persistent sensor issues •A technician recommendation to replace multiple components, including the ECM, stating that codes were “burned into the ECM” The dealership has since attempted to attribute the ECM failure to “engine sludge” and lack of maintenance. Concern with Dealership Explanation: This explanation is inconsistent and raises serious concerns: •Engine sludge is a mechanical lubrication issue and does not directly cause an ECM (electronic control module) to fail or become “burned.” •The ECM is an electronic unit, and failure typically results from electrical defects, internal faults, or manufacturing issues—not oil sludge. •The dealership has not provided technical evidence showing how sludge could damage or “burn” the ECM. •This appears to be an attempt to shift responsibility away from a potential defect or improperly completed recall repair. Safety Concern: The ECM is critical to safe vehicle operation. A failure can result in: •Engine malfunction or reduced power •Unpredictable vehicle behavior •Increased risk while driving If ECM failures are being misdiagnosed or incorrectly attributed to maintenance issues, this could allow serious safety defects to go unaddressed. Requested Action: I request that the federal safety agency: 1.Investigate whether ECM failures are being improperly attributed to maintenance issues such as engine sludge. 2.Review whether the recall repair (WRE21) was properly completed and whether it is related to thi
The worst 2017 Subaru Impreza problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Lights32
- Visibility25
- Electrical21
- Engine14
- Airbags11
- Brakes7
- Driver assistance5
- Fuel system5
- Transmission5
- Acceleration4
- Wheels4
- Body2
- Suspension2
- Steering1
Specific symptoms reported on the 2017 Subaru Impreza
Recalls 7
Exterior lighting: headlights
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2017-2019 Impreza vehicles. The left and right side reflex reflector and left side low beam reflector may inadequately reflect light. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
- Risk
- Reflectors that do not provide adequate illumination reduce the driver's ability to see and increase the risk of a crash.
- Remedy
- Dealers will replace the front headlamp assemblies, free of charge. Owner notification letters were mailed November 15, 2023. Owners may contact Subaru's customer service at 1‑844‑373‑6614. Subaru's number for this recall is WRG-22.
Recall number 22V624000 · Recall details
Electrical system: software
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2017-2019 Subaru Impreza and 2018-2019 Crosstrek vehicles. The Engine Control Module (ECM) may continue to power the ignition coil after the engine is shut off, causing a short circuit.
- Risk
- A short circuit in the ignition coils may cause a stall, increasing the risk of a crash.
- Remedy
- Subaru will notify owners, and dealers will update the ECM software, replace the ignition coils and, if necessary, the front exhaust pipe, free of charge. Owner notification letters were mailed beginning June 1, 2021. Owners can contact Subaru customer service at 1‑844‑373‑6614. Subaru's number for this recall is WRE-21. Note: This recall includes all vehicles previously repaired under Recall 19V743.
Recall number 21V264000 · Recall details
Electrical system: software
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2017-2019 Impreza and 2018-2019 Crosstrek vehicles. The Engine Control Module (ECM) may continue to power the ignition coil after the engine is shut off, which could result in a short circuit and blown fuse.
- Risk
- If a short circuit occurs while driving, the vehicle may stall, increasing the risk of a crash.
- Remedy
- Subaru will notify owners, and dealers will update the ECM software and inspect and replace the ignition coil, as necessary, free of charge. In addition, on vehicles with confirmed ignition coil damage and a certain stored diagnostic trouble code (DTC), Subaru will replace the front exhaust pipe, free of charge. The recall began December 4, 2019. Owners may contact Subaru customer service at 1‑844‑373‑6614. Subaru's number for this recall is WUQ-02.
Recall number 19V743000 · Recall details
Engine and engine cooling: exhaust system: emission control: crankcase (PCV)
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2017-2018 Impreza and 2018 Crosstrek vehicles equipped with an aluminum Positive Crankcase Ventilation (PCV) valve. The PCV valve may come apart, allowing the separated components to enter the engine, possibly resulting in a loss of power while driving.
- Risk
- An unexpected loss of power while driving can increase the risk of a crash.
- Remedy
- Subaru will notify owners, and dealers will inspect and, if necessary, replace the PCV valve, free of charge. If the PCV valve has separated and the components cannot be found, the engine will be replaced, free of charge. The recall began December 2, 2019. Owners may contact Subaru customer service at 1‑844‑373‑6614. Subaru's number for this recall is WUP-01.
Recall number 19V744000 · Recall details
Engine and engine cooling: exhaust system: emission control: crankcase (PCV)
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2017 Impreza vehicles equipped with an aluminum Positive Crankcase Ventilation (PCV) valve. The PCV valve may come apart, allowing the separated components to enter the engine, possibly resulting in a loss of power while driving.
- Risk
- An unexpected loss of power while driving can increase the risk of a crash.
- Remedy
- Subaru will notify owners, and dealers will replace the engine, free of charge. The recall began December 3, 2019. Owners may contact Subaru customer service at 1‑844‑373‑6614. Subaru's number for this recall is WUS-04.
Recall number 19V745000 · Recall details
Fuel system, gasoline: delivery: hoses, lines/piping, and fittings
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2017 Impreza vehicles. Winter fuels may vaporize prematurely in the fuel line, resulting in a reduction in fuel pressure, possibly causing the engine to stall.
- Risk
- An engine stall can increase the risk of a crash.
- Remedy
- Subaru will notify owners, and dealers will reprogram the engine control unit to turn the radiator cooling fan on at a lower temperature, free of charge. The recall began on April 20, 2017. Owners may contact Subaru customer service at 1‑800‑782‑2738. Subaru's number for this recall is WTP-75.
Recall number 17V216000 · Recall details
Back over prevention: camera system
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2017 Impreza vehicles. Due to a software problem, the rearview camera display may not work properly.
- Risk
- A rearview camera display that does not function as designed can reduce the driver's view of what is behind the car, increasing the risk of a crash.
- Remedy
- Subaru will notify owners, and dealers will update the infotainment software, free of charge. The recall began on March 27, 2017. Owners may contact Subaru customer service at 1‑800‑782‑2783. Subaru's number for the recall is WTN-74.
Recall number 17V132000 · Recall details
Technical service bulletins for the 2017 Subaru Impreza 580
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This bulletin the announces diagnostic procedures and availability of new Engine Control Module (ECM)...
- This is an update announcement regarding the TechShare & NorthStar Integration
- This announcement provides information on the connected services platform for Subaru EVs.
- This bulletin provides a step-by-step diagnostic procedure for resolving Remote Engine Start (RES)...
- This Service Information Bulletin has been developed to outline the steps for gathering basic but...
- This announcement provides information on DCM replacememts due to a parasitic draw.
- This announcement provides information on an outage affecting the Subaru Select Monitor 5 application.
- This Service Information Bulletin announces the availability of ThreeBond 1216J (SOA868V9640) designed for...
- This Service Information Bulletin announces the release of a new diagnostic assistance application for...
- This announcement provides information on a new software update for the Midtronics Dss and DCA machines.
2017 Subaru Impreza fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 2.0L 4‑cyl | AWD | 22-28 | 30-38 | 25-32 |
What 2017 Subaru Impreza owners say
Most recent owner complaints, unedited.
I noticed that visibility at night was poor. I was pulled over by the police and give a warning that my headlight was out and told to get it fixed. I thought it may be as simple as a bulb but was told the entire left headlamp assembly had to be replaced at a cost of more than $2,000. Just days later my Dealership send me a service notice which also stated that the left headlamp should be inspected. This was after I had already had it replaced at a local garage. The dealership confirmed that their was a recall but when I tried to get reimbursed by Subaru thru the safety recall WRG-22/the federal safety agency 22V624000 they said my vin# was excluded from the recall!(?)
[XXX] 2017 Subaru Impreza VIN [XXX] Cruze control error. Will it make brake lights fail if not repaired? go look in your database and see if Impreza has more than normal rear end collisions? What else is on bus that might be damaged by spike? Braking? Antilock? Lights? Why is this NOT a recall? INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
1. Any and all airbags failed to deploy. The car is currently parked in my garage and is available for inspection. The insurance company has declared the car a "total loss," and would like to tow it away as soon as possible. 2. The driver had a concussion and whiplash after their forehead hit the steering wheel. 3. No safety inspector has inspected the car yet. The insurance appraiser has inspected the car for the insurance company. 4. There were no warnings or dashboard lights indicating that the airbag had a problem and would fail to fully deploy.
Premature failure of wheel bearings. Both rear wheel bearings had to be replaced after only 54,192 miles. Technician indicated that replacements were upgraded "sealed" systems. At 73,712 miles the front driver's side wheel bearing was also replaced by the dealer after the same symptoms of excessive noise and poor mileage occurred. Concern is that high resistance in the failing bearings creates a lot of heat and could eventually cause catastrophic failure. In 40+ years of driving and owning cars with mileage accruals up to 229,000, this is the only one that ever required a wheel bearing replacement. This, and the technician's reference to upgraded bearings makes me believe that this is a manufacturing defect that should have been covered by a recall.
After reading forums online and my own experience I’m convinced the Subaru sun visors are improperly installed or fitted and pose a danger to drivers and those on the road. The sun visors on the driver and passenger side are incredibly loose and prone to falling off while I’m driving. I cannot use it to deflect sun because it will fall off while I’m driving - creating incredibly dangerous driving conditions. It has fallen in my lap but I’m afraid it might fall down to where the pedals are and cause further issues. This has been an issue since I purchased the vehicle in 2019 and happens almost weekly It doesn’t appear that Subaru sells the parts separately so replacing it would be costly.
The contact owned a 2017 Subaru Impreza. The contact stated that while driving 10 MPH, she crashed into the rear of another vehicle on the front passenger side of her vehicle. The contact mentioned that the seat belt did retract during the impact. No air bags deployed. The vehicle was towed to IAA by the insurance company. The insurance company inspected the vehicle and informed the contact that the air bags should have deployed. The vehicle was deemed a total loss. The contact stated that she sustained a neck and brain injury from the impact that required medical attention. A police report was filed. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 69,000.
The contact owns a 2017 Subaru Impreza. The contact stated that the "Check Headlight Assembly" message was displayed, and the front passenger’s side headlight occasionally turned off or on, while attempting to start the vehicle and while driving at various speeds. The vehicle was taken to a local dealer, where the vehicle was diagnosed, and the contact was informed that the front passenger’s side headlight assembly was faulty and needed to be replaced. The vehicle was not repaired. The contact referenced the federal safety agency Campaign Number: 22V624000 (EXTERIOR LIGHTING); as a possible cause for the failure. The manufacturer was notified of the failure. The approximate failure mileage was 69,534.
I hit the guard rail going 35 mph on an exit ramp because of the low visibility because of the safety recall. I went to get the recall fixed when I found out and they refused to fix the recall because my bumper is messed up.
Parked at a store. Car caught on fire while in store. Car had been parked approximately 10 minutes. Left side headlight spontaneously ignited.
Compare the 2017 Subaru Impreza
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Other model years
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Questions about the 2017 Subaru Impreza
Is the 2017 Subaru Impreza reliable?
Owners have filed 125 complaints about the 2017 Subaru Impreza, 1.6 times a typical Impreza model year.
What is the 2017 Subaru Impreza year score?
The 2017 Subaru Impreza scores 51 out of 100 (below average). The score compares it with the other model years of the Subaru Impreza: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2017 Subaru Impreza?
Lights, with 32 complaints. Next is visibility (25).
How many recalls does the 2017 Subaru Impreza have?
7 recalls, covering exterior lighting, electrical system and engine and engine cooling.
Was there a recall on the 2017 Subaru Impreza lights?
Yes, 1 recall: 22V624000. Check your VIN to see if your car still needs the free repair.
What year does the Subaru Impreza have the most lights problems?
The Subaru Impreza model years with the most lights complaints are 2018 (64 complaints), 2019 (63 complaints) and 2017 (32 complaints).
What gas mileage does the 2017 Subaru Impreza get?
Official estimates for the 2017 Subaru Impreza range from 25 to 32 mpg combined. The most efficient version (2.0L 4-cyl, AWD) gets 22-28 city and 30-38 highway.
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