2018 Subaru Forester: engine failure

Filed Sep 17, 2026 · Electrical, Engine · TX

On July 31, 2026, I was driving with my daughter when the a/c compressor clutch seized up and experienced a catastrophic compressor failure that also blew out the expansion valve o-rings. The failure led to a total loss of engine power and control of the vehicle. The car would not start back up because the clutch was seized and the pulleys wouldn’t turn. Luckily, I was in a residential neighborhood and cars were able to safely go around me. If this had happened on a highway or faster speed limit zone there could have been fatalities. There were tons of lights all over the dash as I attempted to restart the engine. The engine wouldn’t turn over until I gave it plenty of pedal pressure. This extra power to the engine during ignition freed the seized clutch and I was able to drive home without air conditioning. I parked outside in the driveway due to a strong odor of burning metal (probably clutch) when we arrived home. Several years earlier I had completed a Subaru recall WRB-21 for the condenser, and I believe this is directly related to the failure. Subaru of America denied my request for goodwill repair claim under claim 260810-210789 and won’t recognize this as a serious safety issue. There are hundreds of thousands of views on YouTube videos of complaints that the a/c compressor fails prematurely and SOA has only acknowledged the condenser failure. My vehicle has less than 70,000 miles and it has been verified by the dealership (North Park Subaru Dominion) as a “faulty” compressor and leaking expansion valve o-rings. I have requested the dealership to use tracer dye and ensure that metal shavings and debris are not in the closed loop system before replacing the a/c compressor and o-rings which will cause another failure of the entire system. I will also request that they save the compressor for inspection.

Filed Apr 14, 2026 · Visibility · MD

The air conditioning system of my 2017 Subaru Forrester suddenly went out without warning. I noticed a defect when the A/C started buzzing with a high pitched sound and blowing semi-warm air instead of cool. I took my auto to a car repair shop. He provided this diagnostic analysis: Normal coolant level in the system. Performed Leak Detection Test- no detectable leak found at this time. A/C system pressures are too high on both pressure ports. A/C compressor has an internal noise. System is clogged. Ventilation interior cabin filter inspected and given a check at 24, 027 miles. Inspected , removed and replaced engine and cabin air filters at 41,600 miles. Inspected and removed and replaced engine and cabin air filters at 56,375. There are no other A/C related inspection or maintenance requirements to be accomplished (reference Subaru Forrester Maintenance/ Automation Subaru Arapahoe.My vehicle currently has 64,695 miles. My mechanic is currently working up an estimate for the A/C condenser, clutch, pump replacement... essentially the entire system. I consider this a latent defect and wish to be compensated for the repairs. Due to the weather, I wish to have the repairs accomplished and then be reimbursed. I have read articles on line stating this defect has become commonplace for 2017 and 2018 Subaru Forresters. This should be a recall item.

Filed Mar 20, 2026 · Engine · GA

The A/c compressor seized up causing the belt to break. Looked up online and it seems it's a common occurrence with this year and model.

Filed Aug 29, 2025 · Engine · OR

While driving the vehicle I began to hear a loud grinding noise from the engine compartment when the A/C was engaged. I pulled over to look under the hood and it sounded like the noise was coming from the serpentine belt. Upon inspection by a Subaru dealership it was determined that the A/C compressor is failing. I was informed that there was a known issue with the 2018 Forester A/C compressor and the compressor has been redesigned. I was also informed that if I postponed repair then the compressor could seize up with would cause the serpentine belt to break which would then cause immediate engine failure. Such failure could be extremely dangerous if it happens when driving on a highway, etc. There was no warning light that appeared when the grinding noise started. I also listen to music when I drive so it was lucky that I heard the noise before the compressor seized. If Subaru had to redesign the compressor then it seems reasonable that a recall should be issued to prevent engine failure. All routine maintenance has been preformed on this vehicle at the dealership in a timely fashion. There is 78,000 miles on the vehicle and I am the original owner.

Filed Dec 13, 2021 · Fuel system · CA

At around 35,400 miles on the odometer, the vehicle first started backfiring as I was driving. I began an uphill climb through low mountains and the check engine light began flashing, the "emissions control systems" warning light came on the screen, the engine began seriously sputtering and lost a lot of its power, all occurring at the same time. Luckily I have a standard transmission and was able to downshift through gears to regain some power and was able to drive 10 miles, seriously sputtering the whole time, to a safe location. I turned off the engine and it wouldn't start back up again, therefore, I had to have it towed home. The next day I had it towed to a Subaru dealer. It took them 5-6 days to diagnose the cause and fix. I was told it was a VERY rare occurrence; it was pinpointed to the fuel injector and coil, they went bad in cylinder #1. The parts were replaced with new ones and a new spark plug was installed as well. ALL codes are gone and the problem was completely fixed. Thankfully, the service was covered by manufacturer's warranty of 5yrs/60,000 miles power train. For being such a fairly new engine, this problem should not of occurred. A defective fuel injector. However, I can understand that there can always be some sort of flukes. As of this writing, I have not gone to the dealership to pick up the vehicle.