2012 Subaru Legacy engine NHTSA complaints: Engine

NHTSA — Engine Problems


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
43,388 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2012 Subaru Legacy engine problems

engine problem

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2012 Subaru Legacy Owner Comments

problem #7

Nov 162016


  • 61,200 miles


Contact owns a 2012 Subaru Legacy 2.5. while driving at lower speed and approaching a turning lane at a heavy traffic intersection from the highway during rush hour the vehicle vibrated and shuttered abnormally, then stalled with all early computer warning lights going off before engine cut. Owner able to restart vehicle, but cautiously taken to dealer to diagnose with safety concerns while driving. Dealership mechanic unable to diagnose over three hours later. Mechanic stated systems all checked out, but unable to say what the reason was even after test driving twice by different workers. Mileage just over 61,000. Multiple Subaru forums lists this issue with Legacy, outback, and other models (1998-current 2016) citing high safety concerns warranting further investigative review and please be escalated.

- Marietta, GA, USA

problem #6

Jan 302016


  • 86,000 miles
Head gasket blown. While vehicle was moving, coolant backed up and eventually vented. Coolant leaking happened before the temperature gauge warned us engine was hot, and when it splashed, the liquid affected the function of the brakes and power steering. In motion on a highway. Has happened three times before diagnosis

- Cambridge, MA, USA

problem #5

Jun 032013

Legacy 4WD

  • 50,000 miles
I have been in touch with Subaru regarding their inability to fix a ongoing issue with the engine, cruise control, brake, etc light flashing. At this point we can not pass inspection, sell the car, or use the car. How can a manufacturer be allowed to sell a vehicle they can not fix.

- Warwick, NY, USA

problem #4

Jan 012014


  • 45,000 miles


The check engine light goes on and then causes the brake, traction and cruise lights to flash. The lights will go off after some time, not consistently. Spark plugs replaces two (2) coils replaced still no resolution.

- Warwick, NY, USA

problem #3

Dec 022013

Legacy 4-cyl

  • 45,000 miles
The check engine light goes on and then causes the brake, traction and cruise lights to flash. The lights will go off after some time, not consistently. No authorized Subaru dealer has been able to identify the cause or even record the event.

- Warwick, NY, USA

problem #2

May 142012

Legacy 4-cyl

  • 2,515 miles
Engine stumbles and almost stalls. I have now 8500 miles on the car. This has happened at least 10 times sporadically to this point. Dealer can't find the problem.

- Hudson , NH, USA

problem #1

Mar 012012

Legacy 4-cyl

  • 14,000 miles
Purchased brand new Subaru Legacy October 31st of 2011. After only five months and 14,000 miles beginning in March of 2012 I was shocked to discover the following problem(s) with my Legacy: Low idling, bogging down, at oil light illuminated, and nearly stalling out. This issue is still continuing to this day, sporadically. I now have 25,500 miles and there is no solution to this problem. I experienced this low idle, bogging down, and nearly stalling out- at the following documented mileages: 14,989 miles, 15,120 miles,17,007 miles, 17,714 miles, 18,124 miles I then began a more detailed log: 18,383 miles, April 19th 2012, 3:23 P.M., 74 degrees. 20,074 miles, May 2nd 2012, 12:37 P.M., 78 degrees, and 80 miles driven that moment. 21,558 miles, May 16th 2012, 10:06 a.M., 74 degrees, air conditioner on, and 50 miles driven that moment. 21,711 miles, May 17th 2012, 12:16 P.M., 67 degrees, 43 miles driven that moment. 22,899 miles, May 25th 2012, 2:20 P.M., 86 degrees, 107 miles driven that moment. 22,900 miles, May 25th 2012, 2:22 P.M., 86 degrees, 108 miles driven that moment. 23,454 miles, date not logged, 11:44 a.M., 84 degrees, 59 miles driven that moment. 24,977 miles, June 8th 2012, 12:59 P.M. 75 degrees, 81 miles driven that moment. 25,378 miles, June 11th 2012, 5:00 a.M., 64 degrees, 0 (zero) miles driven that moment.

- Fredericktown, PA, USA

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