Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2011 Subaru Forester owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2011 Subaru Forester. The contact stated that while driving at an undisclosed speed, she observed smoke emanating from the engine compartment, and the vehicle began to fill with smoke, prompting her to immediately stop and exit the vehicle. Upon exiting the vehicle, the contact observed that the vehicle had become engulfed in flames, and local emergency services were called. Local emergency services arrived and were able to extinguish the flames. No warning lights were illuminated. A fire report was filed, but a police report was not filed. The contact was treated at an area hospital for a stress-related gastrointestinal issue. The vehicle was towed to a tow yard and deemed a total loss by the contact's insurance provider. The manufacturer was notified of the failure but did not assist. The failure mileage was 102,000.
The contact owns a 2011 Subaru Forester. The contact stated that she noticed an abnormal odor coming from the exhaust. The contact stated that there was no warning light illuminated. The contact took the vehicle to the local dealer, where it was diagnosed, and the contact was informed that the seals needed to be replaced. Additionally, the spark plug gaskets and gasket rocker needed to be replaced. The contact stated that the dealer removed the engine and replaced both cam carrier covers. The contact stated that she drove the vehicle for the next three years and experienced a recurrence of the odor from the exhaust. Additionally, the "check engine oil" warning light was illuminated. The vehicle was driven to the dealer who diagnosed the failure as a failed oil consumption test and recommended that all the seals be replaced yet again. …
The contact's daughter owns a 2011 Subaru Forester. The contact stated while parking the vehicle, there was a rattling noise coming from the engine compartment. No warning lights were illuminated. The vehicle was taken to Findlay Subaru St. George (1453 Sunland Dr, St. George, UT 84790) where it was diagnosed that the short block assembly needed to be replaced; however, no repair was completed, and the engine oil was refilled. The contact was made aware of Technical Service Bulletin: 02-157-14R (Surface Treatment Change to Oil Control Piston Rings); however, the vehicle was not covered under the TSB. The vehicle was then taken to Subaru Sherman Oaks (5747 Van Nuys Blvd, Van Nuys, CA 91401), where it was diagnosed that the failure was related to an oil leak. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 99,600.
My car randomly turns off when reducing speed. It caused an accident a few days ago. I have had multiple mechanics try to figure out the problem but the only thing that comes up on the diagnostic tool is it needed 1 coil replaced. They have all been replaced and still won't go away. The Che k engine light is on. And the car uses about a quart or more of oil everytime I fill up but has no leaks. When I reduce speed the car in traffic, around corners or to stop it constantly turns itself off. Starting it it sometimes turns itself off if I don't give it some gas at the same time. It smells like burning oil constantly.
The contact owns a 2011 Subaru Forester. The contact stated that while driving at an undisclosed speed, the vehicle made abnormally loud sounds. The vehicle was taken to the dealer, and the dealer performed an oil consumption test and determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The contact related the failure to Technical Service Bulletin: 02-157-14R (Surface Treatment Change to Oil Control Piston Rings) however, the vehicle was not covered under the TSB. The failure mileage was approximately 102,000.
I bought my vehicle new from Oakland Subaru. From the beginning I had to add about a quart of oil every month and a half to two months. I thought this was normal. When my vehicle had approximately 73,800miles, I went to Fremont Subaru for a regular motor oil change. I was asked about the oil consumption. After I reported how much oil I had been replacing on a regular basis, they asked me to return after 1,200 miles to see how much oil my car had consumed. They found out that my vehicle had oil leaks and the engine had to be replaced at 75,000 miles. Subaru paid for the service to be done. Today I took my vehicle to Fremont Subaru for a regular motor oil change which I usually do. My vehicle currently has 134,605 miles. The service representative, Devon Devlugt, informed me that my vehicle is unsafe to operate due to several oil leaks from the engine. …
I have a single-owner 2011 automatic-transmission Subaru Forester [145k miles]. In a parking lot, I started the car as usual and shifted into reverse. I immediately noticed another car was approaching behind me and reflexively pushed on the brake to give the oncoming vehicle the right of way. As I pushed on the brake, the car suddenly and without warning surged backwards as the engine revved and "stuck" at a high rpm level. Surprised by the sudden loss of control and to stop the lunge backwards, I immediately released the brake pedal and shifted into neutral. I believe this reflexive action was solely attributable to my long history driving manual transmissions which "teaches" your brain that as an alternative to using the brake you can clutch [or if necessary "pop"] to neutral to disengage the engine from the wheels to control the vehicle. …
We have come to learn that our 2011 Forester with 95,229 miles is now burning (internally) oil at an alarming rate. The car was making a funny noise so we had it towed to the dealership and they found it was low by 4.8 quarts of oil. The last oil change was at 91,749 and this issue was discovered at 95,229 or 3480 miles driven and 4.8 quarts of oil is "missing". The dealer advised there is no signs of leaks from under the car and where we have it parked, there are no oil spots on the pavement. I have come to learn that in August 2014 then again in April 2016 there was a service bulletin on this engine due to oil consumption. The notice indicated that they (Subaru) was extending the powertrain warranty to 8 years / 100,000 miles. Sadly, we are past the 8 years but not the 100,000 miles.
Thousands of Subarus are developing leaking cam carriers which can cause the vehicles to stall due to oil loss. There are online threads with many, many owners reporting their vehicles developed this problem - many with low mileage. My vehicle developed the problem with about 40,000 miles on the odometer. This vehicle should be recalled. Dealerships are making a fortune fixing these vehicles, often charging close to $3,000.
Concerned over oil being burnt up at a significant rate, have to add a quart per tank of gas. Theres distinct burnt oil smell after driving. Concerned my car needs to be included in the oil consumption recall.
Engine complaints in other Forester years
Frequently asked questions
How common are engine problems on the 2011 Subaru Forester?
NHTSA has 67 complaints about the engine & cooling of the 2011 Subaru Forester, 46% of the model year's 147 complaints. The component named most often is engine › oil/lubrication › pump (1 mentions).
Is there a recall for 2011 Subaru Forester engine problems?
No. NHTSA lists no engine & cooling recall for the 2011 Subaru Forester, though it has 16 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2011 Subaru Forester engine problems start?
Half of the complaints with a recorded mileage happened before about 66,000 miles, and 29% before 25,000 miles.
Is it dangerous?
Owners linked 6 crashes, 4 fires and 2 injuries to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.