Following an engine-out service at an authorized dealer (Bill Kolb Jr. Subaru), a primary powertrain mounting bolt was left unthreaded by approximately 1 inch, creating an undetected 8,000-mile safety hazard that resulted in extensive drivetrain and suspension component failures. Subsequently, during a diagnostic inspection at another authorized dealer (All American Subaru), heavy rusted metal pliers and loose cowl trim panels were abandoned unsecured inside the wiper cowl tray beneath the windshield, posing a severe roadway projectile and steering/wiper obstruction hazard.
The worst 2018 Subaru Legacy 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.
- Electrical40
- Visibility32
- Engine10
- Driver assistance8
- Fuel system8
- Brakes6
- Body4
- Steering4
- Acceleration3
- Airbags3
- Suspension3
- Lights2
- Tires2
- Transmission2
- Seat belts1
- Wheels1
Specific symptoms reported on the 2018 Subaru Legacy
Recalls 3
Fuel system, gasoline: delivery: fuel pump
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2018 Forester, 2018-2020 Impreza, Legacy, Outback, 2018-2019 BRZ, WRX, and Toyota 86 vehicles. The low-pressure fuel pump inside the fuel tank may fail.
- Risk
- Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.
- Remedy
- Dealers will replace the low-pressure fuel pump, free of charge. Owner notification letters were mailed September 24, 2021. Subaru and Toyota owners may call customer service at 1‑844‑373‑6614. Subaru's number for this recall is WRG-21.
Recall number 21V587000 · Recall details
Visibility: rearview mirrors/devices
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2018 Legacy, Outback, and BRZ vehicles. In the affected vehicles, a software issue may cause the audio display system to not initialize, resulting in the camera display remaining blank. If this occurs, the rearview image will not display while backing up the vehicle. As a result, the vehicles fail to comply with requirements of Federal Motor Vehicle Safety (FMVSS) number 111, "Rearview Mirrors."
- Risk
- Failure to display the rearview image while backing up increases the risk of crash.
- Remedy
- Subaru has notified owners, and dealers will reprogram the audio system display software, free of charge. The recall began on February 5, 2019. Owners may contact Subaru customer service at 1‑844‑373‑6614. Subaru's number for this recall is WTZ-85.
Recall number 18V935000 · Recall details
Electrical system: software
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2018 Subaru Legacy and Outback vehicles. Due to a software error, the low fuel warning light may not illuminate at the intended remaining fuel level and the miles-to-empty display may incorrectly indicate a positive number despite the tank being empty.
- Risk
- The inaccurate fuel display may cause a driver to unexpectedly run out of fuel and the vehicle to stall, increasing the risk of a crash.
- Remedy
- Subaru will notify owners, and dealers will reprogram the combination meter software, free of charge. The recall began February 20, 2019. Owners may contact Subaru customer service at 1‑844‑373‑6614. Subaru's number for this recall is WTW-82.
Recall number 18V773000 · Recall details
Technical service bulletins for the 2018 Subaru Legacy 456
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This bulletin announces diagnostic procedures along with 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.
2018 Subaru Legacy 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 |
|---|---|---|---|---|
| 2.5L 4‑cyl | AWD | 25 | 34 | 29 |
| 3.6L 6‑cyl | AWD | 20 | 28 | 23 |
What 2018 Subaru Legacy owners say
Most recent owner complaints, unedited.
The vehicle on board video entertainment display has stopped working properly. It does not allow any input to the touch screen. And the only way to regain some functionality is by pressing the steering wheel source button. However it works intermittently. And this causes Driver Distraction while driving.
The factory Harman Kardon Starlink touchscreen infotainment system in my 2018 Subaru Legacy has experienced severe touchscreen delamination. The display has developed widespread bubbling beneath the glass and now generates repeated "ghost touches" without any driver input. The system activates buttons, changes screens, opens menus, and performs functions on its own while the vehicle is being driven. These unintended inputs create a driver distraction and make it difficult to use navigation, audio, and vehicle information functions safely. This appears to be a known and widespread issue affecting 2018 Subaru Legacy vehicles equipped with Harman Kardon Starlink head units. The problem is caused by touchscreen delamination and continues to worsen over time. Subaru of America was contacted regarding the defect but declined assistance. The vehicle currently has approximately 117,000 miles. The issue is not the result of damage, misuse, or modification of the vehicle. I am submitting this complaint because the touchscreen operates without driver input and creates a distraction while driving.
The computer screen has an issue where there is bubbling in the lamination causing the screen to go nuts and become a distracting hazard that you can not shut off. It's a known Subaru Legacy issue and should be a recall. A new screen is $2000 plus, which is not feasable for the average person to pay and it's become a safety hazard, ect.
The car 2018 Subaru Legacy 2018, has touch screen delamination on thecentral information/ entertainment screen, which leads to screen freezing, unresponsiveness, and erratic "phantom" inputs. These malfunctions disable vital safety features, like backup cameras, etc.. Subaru has settled claims on this issue, for this vehicle/model, but I do not believe there is an official recall, even though there is obviously a safety issue.
Ghost touch issues with infotainment system (as with many other Subaru models). Cannot use radio, Bluetooth or any screen functions.
The infotainment touchscreen in my 2018 Subaru Legacy experiences “ghost touch,” where the screen registers inputs without driver interaction and becomes unresponsive. While driving, the screen changes settings on its own and distracts the driver. As a result of the touchscreen malfunction, critical safety features including Blind Spot Warning and Lane Keeping Assistance became disabled. This directly impacted safe vehicle operation. The issue was diagnosed by an authorized Subaru dealership, which confirmed the head unit is defective and requires replacement. Subaru previously issued a warranty extension for this known defect. Subaru of America denied goodwill assistance despite the safety-related nature of the defect.
I experienced an incident of spontaneous acceleration of my vehicle on November 21, 2025. I was driving slowly with my foot on the brake as I was about to make a turn and the engine suddenly accelerated. I slammed down on the brake and the car stopped, but this was extremely frightening.
My wife experienced an unintended acceleration in her 2018 Subaru Legacy. My wife had begun to slowly back out of a parking space in a school parking lot when her 2018 Legacy went into an unintended rapid acceleration in reverse. The car took off in reverse and did not respond to her applying the brakes. Somehow she managed to steer the car which was rapidly acceleration in reverse, virtually uncontrollable, and guide the car down a row of parked cars until she clipped the front of another car at the end of the row and her car came to a stop. Thank God there were no students in the parking lot at the time! The floor mats in our Legacy are Subaru mats that lie flat and in no way would affect the accelerator pedal. As the car was accelerating in reverse, and she had removed her foot from the accelerator onto the brake, the brakes did not slow the car. There is considerable damage to the right rear of the car and trunk. After the accident, when the car was restarted, the accelerator and brakes worked fine and she was able to drive it home from the scene. Thank god students were not in the parking lot! [XXX] [XXX] (cell) [XXX] Nashua, NH 03062 (May-Oct), Ponte Vedra, FL (Nov-April) INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
I have been going back and forth with Subaru of America's Advocacy department for about two weeks now, I purchased my 2018 Subaru legacy back in August of 2023. My head unit in my vehicle has now completely stopped working, I have explained that now my back up camera is now freezing and going black and that it poses a safety risk, but they are not helping me, all they keep telling me was the extended warranty for that specific issue expired in July of 2023. when I checked Subaru's recall website, they have completed out that recall in July of 2025, I have never taken my car in for this issue, I was also never aware of this recall. I have all emails going back and forth with the advocacy department. the recall was for "FMVSS 111" per Subaru advocacy dept. my car has a total of two recalls that have been completed out but it shows they were completed out July 26, 2025, I have had possession of this vehicle since 2023 and was never made aware of any open recalls so I never have taken my car into get anything corrected. this vehicle's star link system is still linked to the previous owner because I can't get it to be linked to me yet.
Compare the 2018 Subaru Legacy
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Other model years
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Questions about the 2018 Subaru Legacy
Is the 2018 Subaru Legacy reliable?
Owners have filed 117 complaints about the 2018 Subaru Legacy, 1.5 times a typical Legacy model year.
What is the 2018 Subaru Legacy year score?
The 2018 Subaru Legacy scores 59 out of 100 (below average). The score compares it with the other model years of the Subaru Legacy: 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 2018 Subaru Legacy?
Electrical system, with 40 complaints, typically around 15,365 miles. Next is visibility (32).
How many recalls does the 2018 Subaru Legacy have?
3 recalls, covering fuel system, gasoline, visibility and electrical system.
Was there a recall on the 2018 Subaru Legacy electrical?
Yes, 1 recall: 18V773000. Check your VIN to see if your car still needs the free repair.
What year does the Subaru Legacy have the most electrical problems?
The Subaru Legacy model years with the most electrical complaints are 2016 (51 complaints), 2018 (40 complaints) and 2015 (37 complaints).
What gas mileage does the 2018 Subaru Legacy get?
Official estimates for the 2018 Subaru Legacy range from 23 to 29 mpg combined. The most efficient version (2.5L 4-cyl, AWD) gets 25 city and 34 highway.
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