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Engine & cooling

2011 Subaru Legacy Engine problems

Owners have filed 28 complaints about the 2011 Subaru Legacy's engine & cooling with NHTSA - 17% of all its complaints, most recently on October 22, 2025. They describe 0 crashes, 1 fire and 0 injuries. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Complaints
28
Recalls
0
Crashes
0
Fires
1
Injuries
0
Deaths
0

Engine complaints

Transmission & drivetrainEngine & cooling

An issue has surfaced with my car that it turns off while driving. Obviously this is a serious safety hazard and likely to result in an accident. Now that it has happened, it is continuing and frequently happening. I reached out to Subaru as I saw there was a recall for my car's make and model that is causing the same issue. The issue is listed as NHTSA CAMPAIGN ID: 19V297000, described as "The engine turning off unexpectedly can increase the risk of a crash. " and affecting many Subarus, including the 2011 legacy....

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I believe my car is impacted given the behavior it is exhibiting. When I reached out to Subaru, they dismissed it saying it did not apply to my car and they were not willing to investigate. I believe this poses a grave risk to many people given that it will cause an accident and the severity of the defect.

Filed Incident Power train · Unknown or other · EngineNHTSA 11695074
Fuel systemEngine & cooling

Tl* the contact called on behalf of her daughter who owns a 2011 subaru legacy. The contact stated that the vehicle sputtered while slowing down to come to a complete stop. The vehicle loss motive power before coming to a stop. The vehicle was restarted. The contact took the vehicle to first team subaru norfolk (6633 e virginia beach blvd, norfolk, va 23502, (877) 274-7828) however, the mechanic was unable to determine the cause of the failure. The mechanic suggested that fuel additive should be added to the fuel to provide a temporary fix. The vehicle was not yet repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 100,000.

Filed Incident Fuel system, gasoline · EngineNHTSA 11415504
Electrical systemLightsEngine & cooling

Was warned by other drivers that my tail lights were out several times. Clock and saved radio stations went out and now brought the car in for yearly inspection and major oil leak from gasket. 16,000 Miles on this car. Never have I had so many problems.

Filed Incident Electrical system · Exterior lighting · EngineNHTSA 11399636
Transmission & drivetrainEngine & coolingFuel system

Changed out the timing belt as part of recommend service by subaru only to learn that the head gaskets were leaking and it's a known problem with all subarus built before 2013. Subaru is aware of the problem, and has created a conditioner that is added to the cooling system as a "band aid."

Filed Incident Power train · Engine · Fuel / propulsion systemNHTSA 11352699
Engine & cooling

My subaru has a stalling problem. It will stall at hard stops or when I roll to a stop. It can be very dangerous when going up a hill where you need to slow down or if someone stops hard in front of me. It shudders like it wants to stall many times throughout the day. Subaru need to look into this cause many people have this problem and it is very unsafe. *Tr

Filed Incident Unknown or other · EngineNHTSA 11329321
Engine & cooling

When coming to stop sign or sudden stops the car will stall. You have to be quick and restart car or your going to get hit, you lose all control. This has been happening since we bought the car in april of 2019

Filed Incident EngineNHTSA 11316257
Engine & cooling

All power cuts off periodically while driving. Which can be very dangerous and cause an accident.

Filed Incident EngineNHTSA 11289717
Engine & cooling

My 2011 subaru legacy is experiencing shuddering and stalls when coming to a stop resulting in the engine shutting off. I can describe this condition similar to coming to a stop in a manual transmission equipped vehicle without depressing the clutch. It is seem similar to like the vehicle is stalling or cause it to stall.

Filed Incident EngineNHTSA 11270075
Electrical systemEngine & coolingFuel system

The engine turning off unexpectedly when I am driving. Especially when I go to slow down. This has been an issue since I bought the vehicle. From day one.

Filed Incident Electrical system · Engine · Fuel / propulsion systemNHTSA 11269096
Transmission & drivetrainEngine & cooling

The car is just shy of 8 years old. The transmission failed causing the car to suddenly stop, shut off and lose power steering while traveling down the road. Currently the engine is leaking exhaust from the engine compartment that can be smelled in the passenger compartment. It is also leaking hot oil from the cylinder head onto the lower exhaust and leaking hot coolant from the radiator. The exhaust and fluid leaks occur when stationary or in motion.

Filed Incident Power train · EngineNHTSA 11244202
Engine & cooling

When driving at a high speed on the highway and then coming to an abrupt stop the car stalled. The car is an automatic. Apparently subaru distributed a bulletin noting that this was common in legacy and outback models made before 2013 (see attached) and is due to a torque converter problem. This seems dangerous as it can happen while driving on the highway with other cars moving at high speeds. Apparently this is over $1500 to fix, but I believe subaru should cover some if not all of the cost. The car is not under warranty and has 147k miles.

Filed Incident EngineNHTSA 11208024
Transmission & drivetrainBrakesEngine & cooling

Very routinely when coming to a stop from the car moving when you decrease your speed when stopping for a light, traffic, or anything that would require a quick stop, the car will stall out as your speed is less than 10-20 mph and you loose control of the steering, brakes. Ect. This is a huge safety issue and needs to be addressed by subaru immediately. This can occur on any street, highway and will do this while turning as well. This happens daily in my commute and is a danger to myself and others. It occurs when coming to a stop from a moving position.

Filed Incident Power train · Service brakes · EngineNHTSA 11174622
Transmission & drivetrainEngine & cooling

When car is coming up to a stop sign it stalls and dies on me and I have to put it in park and start it back up. I had a time where it idled like it was going to die and didn't but it does this 4 to 8 times a day. Not sure what is going on but I almost got hit by a semi truck due to it stalling. Please help this needs to be fixed it is not safe especially when I have small children in my car . I need answers.

Filed Incident Power train · Unknown or other · EngineNHTSA 11165890
BrakesEngine & cooling

My car hesitates and turns off sometimes when slowing down at a stop or red light, rpms fluctuate as I brake or accelerate, my brake light is on solid and I get a at oil temp light flashing and then I can't use my paddleshifters at all, car sounds highly rev'd but doesn't go as fast! Please help as this is a safety hazard, I drive on california freeways everyday and this is a danger to my family when commuting.

Filed Incident Service brakes · EngineNHTSA 11128791
Engine & cooling

Engine idle rpm is unstable. (+ / - 500 Rpm) engine stalled many times (6 or 7) without reason and in dangerous situation as turning in the intersection or crossing rail roads, when stopping or slowing down. I went twice in subaru service. At first they replaced the "torque converter" and proceeded with some adjustments in the engine. Second time they "re-programmed" the computer. As of today I am getting same issue without help from subaru service. They advised to file a claim and eventually sue the company.

Filed Incident EngineNHTSA 10945061
Electrical systemEngine & coolingVisibility & wipersFire

01/07/2016 Shortly after taking the freeway exit wife noticed the battery light turned on and power steering got heavy. All other warning light on the dash started to flicker as the passenger compartment quickly filled with smoke. She then pulled over and had just enough time to get both kids out before the entire car was engulfed in flames. Fire originated from under the hood of her 2011 subaru legacy 3.6R limited. The vehicle was a total loss.

Filed Incident Electrical system · Engine · Visibility / wiperNHTSA 10823290
Engine & cooling

CAR SPUTTERS & STALLS WHEN BRAKING

Filed Incident EngineNHTSA 10809113
Electrical systemBrakesEngine & cooling

Whenever the brake is pressed hard to a complete stop, the car stalls and all electrical shut off. It doesnt seem to happen when you brake very slow before coming to a full stop. But if you brake slowly and then pressed the pedal full, the problem will occur. This can cause panic and also delay on cars running behind the car. It appears this is similar problem reported under 10395739. I also found a number of similarly reported problems online with subaru cars.

Filed Incident Electrical system · Service brakes · EngineNHTSA 10762795
Transmission & drivetrainEngine & cooling

Car continues to stall when reducing speed. Occurs mostly at traffic lights and stop signs; however, has occurred when slowing for traffic. Car has completed all scheduled maintenance and oil changes as required. Initially told to service air flow sensor and have inspected for vacuum leak. Vehicle service did not resolve stalling. Service bulletin 16-90-13 shows subaru knows the torque converter to be faulty on these vehicles, causing the vehicle to stall under these exact conditions. This is creating a safety...

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concern on these vehicles for the potential to be rear ended due to stalling when attempting to slow vehicle. Safety recall should be issued and torque converter should be replaced by subaru due to faulty design. *Tr

Filed Incident Power train · EngineNHTSA 10711902
BrakesEngine & coolingFuel system

For the past 2 months my subaru legacy has been stalling and losing power when I roll to a stop and/or when suddenly braking. Almost got rear ended by semi truck on the freeway and multiple times at stop lights in foggy situations. Subaru dealership said if it was an annoyance I should bring it in. Almost dying in a subaru with my daughters is more than an annoyance. Dealership has known about it but performed a throttle body service, which was futile. Online forums suggest a faulty torque converter and a...

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service#16-90-30. Quotes for replacing it are around $2000. Subaru knows it is due to faulty design of torque converter...This should be recalled. I used to love subarus and this car, I am now forced to take a loss financially and buy a safer car. Completely unsafe. *Tr

Filed Incident Service brakes · Engine · Fuel / propulsion systemNHTSA 10701824
Transmission & drivetrainBrakesEngine & cooling

I was coming to a red light slowing down from 15 mph while applying the brakes, the car acts like something is grabbing & it shuts down the motor. The car was not cold it was warmed up & drove about 28 miles before doing this. The skid light came on. It was a dry road. This car has done it several times. I have searched this on the internet & have seen others saying the same thing has happened with their subaru. Its scary to think this might happen to me on one of our slick roads going off a hill. I have not had it...

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checked out yet do to the holiday season. It does not happen every time I drive it. I have noticed while applying the breaks when it starts feeling like the rotors are grabbing if you ease off just a little and then apply again the car will not shut off it will stay running. I have shut off the skid protection and drove it & still it will do this and the skid light will show up. On the internet it says it could be the icv valve. But im not sure that has anything to do with the skid protection. I bought the car this summer & I had the dealer ship to put new breaks and rotors on it before I bought it. Had no trouble at all with this until last month. I just had the oil and filter changed this week. There are no service lights staying lit. & It still does this. I will be getting this checked out. A guy mentioned that it could be the transmission. This car is an automatic & does have the manual transmission shifters on the steering wheel. The car was in the automatic mode when this happened it is not drove in the manual side. Im thinking I should try driving in the manual side to see if it will do this. I've had no complaints with any of my other subarus weve owned. I have never had this problem with them. However I have never owned one with the skid protection or in the 2000 model until this one. *Tr

Filed Incident Power train · Service brakes · EngineNHTSA 10671506
Electrical systemEngine & cooling

Vehicle was stopped at a red light. Upon light acceleration, check engine light came on (and stayed on), parking brake light began to blink, cruise control indicator began to blink, and traction control light came on and stayed on. Driver did not detect any slippage. Authorized subaru dealer found no problem with oil control valve (ocv) despite computer code indicating potential problem with that part. Dealer, however, indicated oil flush, rather than simply an oil change, was necessary despite less than 5,000 miles since previous oil change. Dealer asserted that oil level was not low, however. Cause of what triggered the indicators to be set off remains unclear. *Tr

Filed Incident Electrical system · EngineNHTSA 10659768
Engine & coolingTransmission & drivetrain

On two separate occasions, I put the vehicle into drive and removed my foot from the brake, before accelerating; the car rolled forward in a shuttering manor and then lunged forward several feet (4-6 ft). The rpms seemed to drop (500-700 rpm) and then spike (1,200-1,500 rpm) with no acceleration at time of the incident. I immediately applied the brake and stopped for several seconds. I then took my foot off the brake again and the vehicle seemed to run fine. The engine was not cold at the time on occurrence; it had been driven approx. 30 Minutes before the incident. *Tr

Filed Incident Engine and engine cooling · Power trainNHTSA 10456791
Engine & coolingElectrical system

6 Speed manual transmission. Vehicle stalls, and rough idles intermittently while at stop light or other traffic control. Vehicle also stalled while on highway twice disabling power steering, and power braking. Brought back to dealer and they were unable to replicate issue. Issue occurred again, brought back to dealer 2nd time same results. 3Rd time issue was replicated while I was in vehicle with tech. Technician stated that they will address it. Left over weekend. Tuesday dealer notified me that the vehicle...

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was experiencing a power draw after the window or electronic brake were used, and the factory advised that the computer would need to be "re-flashed" but currently, there is no re-flash program developed, and there is no time line as to when it would be. Contacted subaru america cust. Serv. District manager test drove and was unable to replicate. So as far as the dealer and subaru are concerned, there is no issue. Vehicle still stalls intermittently. Filed complaint with ct dvm lemon law, and now with nhtsa. *Tr

Filed Incident Engine and engine cooling · Electrical systemNHTSA 10453229
SteeringEngine & cooling

Feeling unsteady on highway speeds 60+, whistle noise in heater vent not fixed by dealer, volume buttons on steering wheel not working brought in 4 times to dealer to fix, whistle noise in window was told is the mirrors outside however when roll window up and down several times...It hits the top hard, but shuts fully and noise stops sound like window will break, hard start 3x dealer asked where I buy my gas, hood of car vibrates on highway, heat comes out strong on windshield on foot setting, dealer said normal and...

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showed map however its the same as setting it to foot and windshield setting, mileage: on full says 430, I clocked it and when it showed 380 we had only drove 17 miles inaccurate. Cup holder broke after putting water bottle in it was replaced by dealer, transmission shifting down by bucking dealer stated memorizes driving. Inside scratches easy cheap. Have case w subaru of america but getting nowhere. *Tr

Filed Incident Steering · Engine and engine coolingNHTSA 10448112

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Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data

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