Ticking noise on cold start up as well as reduced acceleration speed and torque. Diagnostics point me to believe the AVCS solenoids are beginning to fail prematurely. This has not been confirmed by a dealership and the issue is reproduced during any driving. There are no CEL lights active or codes stored. The vehicle currently has 74,*** miles. The issue started within the last 6 months. This is a safety concern when attempting to get up to highway and freeway onramps or getting up to merging or passing speeds.
Subaru Forester knocking problems
44 of the 6,539 owner complaints about the Subaru Forester describe engine knocking or ticking, most of them for the 2011 model year.
- owner complaints
- 44
- worst model year
- 2011
- typical mileage
- 69,999
Is there a fix? There are 5 recalls for this area of the car. See below
By model year
Often reported together
Engine failure 16Fire or smoke 5Oil consumption 4Stalling 3Check engine light 3Warning lights 2Misfire 2Loss of power 2
What owners say
I checked my oil level, fluids, and tire pressure before a drive on the highway. Driving on [XXX] South, faint ticking started, then a louder tapping, and I immediately pulled off, luckily, off an exit ramp. AAA towed the Forester to a certified repair shop and the mechanic stated that the engine was blown. The 2.5 boxster engine used little to no oil, and the oil changes had been made always earlier than needed. The Forester had been maintained perfectly, driven cautiously and it had never been subject to any adverse conditions or accidents. After speaking with a number of certified mechanics, it is known that the engine needs to be replaced. But, how can the engine be replaced, especially with a used engine, when the boxster engines are very faulty and Subaru has not engineered corrective actions/new parts ? Subaru has a serious problem with these engines and now after there are hundreds of similar owners they should do some type of recall to compensate the owners. The Forester has less than 126,000 miles, and was cared for in every possible way. Subaru, you should contact us owners to get this corrected, and to provide updated boxster engines with thicker and better, pistons, rods, cylinders, cams etc. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2008 Subaru Forester. The contact stated that while driving at various speeds, there was a clanking and knocking sound coming from the front end of the vehicle. The vehicle was examined by an independent mechanic who discovered severe subframe rust and corrosion. The vehicle was not repaired. The contact stated that while backing out of the driveway, the front driver’s side control arm was fractured, rendering the vehicle undrivable. The contact stated that the failure was caused by corrosion of the front lower control arm. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the vehicle was previously repaired under the federal safety agency Campaign Number: 11V464000 (Suspension); to prevent the failure from occurring; however, the vehicle experienced the failure listed in the recall. The local dealer was not contacted. The failure mileage was 116,000.
After purchasing the vehicle on July 25, 2023 at approximately 99,800 miles, I began driving across the country from PA to CA. I purchased the vehicle from a Subaru dealership, so it was certified pre-owned. Beginning on day 3 of the drive, the car began to make a ticking sound under the hood. The car still had oil on the dipstick, but I added half a quart to be safe. There were no dealerships nearby, so I proceeded to drive to the nearest town and went to a mechanic. They believed the sound was from the engine working hard. We proceeded driving the following day, and after a few hours (around 2,000 miles of the cross country drive) the sound became worse/louder. I was fortunately able to pull off at an exit in the middle of Wyoming, and immediately after driving down the exit ramp, the car stopped. I could not turn the steering wheel, the car would not move, and 3 lights came on. I was able to turn on the car to move it 20 feet out of the way, and checked the oil again as two oil lights came on the dash. There was essentially no oil in my car. I added the last half quart I had with me, but the location we were at did not carry oil for cars. We got a tow to the nearest dealership the following day and they informed me that my engine needed to be replaced and I had no oil in my car. There were no warning or indication lights the entire time we were driving. The engine seized without warning and there were never any leaks under the car indicating that I was losing oil. Had there not been an exit at the right time, the car would have given out on the side of the highway where people drive 80mph. The exact cause is still unknown as to why the engine burned through all the oil and why the engine needs to be replaced.
On 7/31/23 I was driving on the highway when I started to hear a knocking sound. I got off the highway and my car stalled at the light off the exit. I was able to restart it after three tries and get it about 50 ft to the shoulder. At that point there was smoke coming from under the hood. I called AAA and had it towed to a nearby garage. They told me it had to go to the dealer because it likely needed a new engine. They said that the oil had mixed with the antifreeze. The dealer stated it needed a new engine. It was a catastrophic engine failure. I never had any warning (no panel lights ever illuminated) of any issue with the oil or engine issues. I feel very lucky that I did not have an accident due to this sudden failure. The cost of the repairs is estimated between $9,000 and $15,000 on a vehicle that is supposed to last 250K. It currently has 98K miles on it. My biggest complaint is there was never any warning of this. I feel that is a failure of the electronic system that should have alerted me of engine issues and a defective engine. I also filed a complaint with Subaru but have not heard from them yet.
I was driving on the highway and the oil light came on as well as a ticking noise and vibration throughout the car. The engine shut off and now will not start. There is plenty of oil, gas, and the battery is charged. The engine turns when I turn the key but won't actually start and run. Makes a loud squeek as it trys.
Moved car 30’ from gas pumps to air pump. Slowed to almost complete stop to move closer to air tank. Car accelerated at extremely high speed over curb, knocking over air pump. Car proceeded to smash through landscaping shrubs and hit a tree and nearby pole which stopped the car dead. Felt like a fighter plane pushed me. Entire incident probably lasted a minute. Air bags failed to deploy. Car was totaled. I suffered severe facial and othet bruising and have ongoing fatigue and am eadily winded.
-Engine failure: fuel line issue causing 2022 Subaru Forester Wilderness to catch fire and explode - beforehand rod bearing was pulverized in separate incident a few months prior - engine was then replaced and car exploded 600 miles later causing total loss of vehicle. -Car exploded while driving in it, lost all personal belongings in car, barely got out of vehicle in time before explosion. -Investigation completed by Subaru of America and confirmed as a fuel line issue a few weeks later. -Smelt gas on highway while driving a few moments prior to car exploding.
Pulled into parking space in shopping mall. The car accelerated over the curb and ran into a store front knocking out a wall. The car was still in Drive when it came to a stop. No one was hurt in the car, on the sidewalk or in the store. There is a class action law suit on this model of Subaru for uncontrolled/sudden acceleration while coming to a stop, but Subaru does not acknowledge any problem. This was the first indication of a sudden acceleration for this car. It just had its 30,000 inspection from the Subaru dealer.
The contact owns a 2021 Subaru Forester. The contact stated while his wife was driving 65 mph, she heard a ticking sound coming from the front windshield and noticed a small rock had struck the front windshield. The driver drove to the destination however, later in the day the driver returned to the vehicle and noticed a large crack had formed in the middle of the windshield. The vehicle was not diagnosed nor repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 6,000.
Related recalls
Engine and engine cooling
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2024 Forester vehicles. The engine water pipe may have loose attachment bolts, allowing the pipe to lose its seal and leak coolant.
- Risk
- Leaking coolant can contact a hot exhaust pipe, increasing the risk of a fire.
- Remedy
- Subarus independent distributor processing facilities will tighten the water pipe attachment bolts. The affected vehicles have not been delivered to dealers or sold to owners and therefore, no owner notification letters will be sent. Owners may contact Subaru's customer service at 1‑844‑373‑6614. Subaru's number for this recall is WRO-23.
Recall number 23V723000 · Recall details
Engine and engine cooling: exhaust system: emission control: crankcase (PCV)
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2019 Crosstrek, Forester, and Ascent vehicles. The aluminum Positive Crankcase Ventilation (PCV) valve can separate, allowing the separated components to enter the engine, 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 replace the PCV valve, free of charge. If the PCV valve has separated and the components cannot be found, the short block engine will be replaced, free of charge. The recall began January 31, 2020. Owners may contact Subaru customer service at 1‑844‑373‑6614. Subaru's number for this recall is WUW-08.
Recall number 19V856000 · Recall details
Engine and engine cooling: engine: gasoline: turbo/supercharger
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain model year 2015-2016 WRX vehicles manufactured April 10, 2015, to October 21, 2015, and Forester 2.0XT vehicles manufactured April 10, 2015, to October 20, 2015. The turbocharger air intake duct may crack and possibly result in an engine stall.
- Risk
- An engine stall increases the risk of a crash.
- Remedy
- Subaru will notify owners, and dealers will inspect the turbocharger air intake duct, and replace it as necessary, free of charge, depending on the lot number found on the duct. The recall began April 2016. Owners may contact Subaru customer service at 1‑800‑782‑2783. Subaru's number for this recall is WTA-62.
Recall number 16V162000 · Recall details
Engine and engine cooling: engine
- What is wrong
- Subaru is recalling 16,715 my 2007-2008 legacy sedans and wagons, my 2008 impreza sedans and wagons, and my 2009 forester vehicles. Some vehicles may have the cylinder head-side oil supply pipe and turbocharger-side pipe improperly assembled.
- Risk
- Vibration would occur while driving and, over time, could eventually result in cracking the pipe which would allow oil to leak. If leaking oil contacts components operating at high temperatures, an engine compartment fire could occur.
- Remedy
- Dealers will inspect for cracking or an oil leak at the oil supply pipe at the cylinder head-side. An additional bracket will be installed to increase rigidity of the pipe and the pipe assembly will be replaced with a modified part. The recall began on october 20, 2008. Owners may contact subaru at 1‑800‑782‑2783.
Recall number 08V460000 · Recall details
Engine and engine cooling
- What is wrong
- On certain passenger and sport utility vehicles, the cover bolts for the engine oil control valve may not be sufficiently tightened, allowing oil to leak from around the cover gasket.
- Risk
- If leaking oil contacts components operating at high temperatures, a fire could result in the engine compartment.
- Remedy
- Dealers will inspect and retighten the oil-flow control valve cover bolts. The recall began on october 8, 2004. Owners should contact subaru at 1‑800‑782‑2783.
Recall number 04V473000 · Recall details
Questions about the Subaru Forester knocking
Which Subaru Forester years have engine knocking or ticking problems?
The model years with the most reports are 2011 (8 complaints), 2012 (7 complaints) and 2013 (4 complaints).
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