2018 Subaru Forester: sudden loss of power

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 Jan 15, 2025 · Engine · CA

For the second time we were on the freeway at a hight speed and the car suddenly lost power, all the warning lights came on, and we had to get off the freeway (dangerously). We almost got hit, and other cars had to brake radically. We took it in to Subaru and they said the catalytic converter was bad. They replaced the catalytic converter, and when they took it for a test ride, they found that the SECOND catalytic converter was bad. Apparently they have two. The car must have suddenly lost power for them, too. We have 85k miles on the car, and the Subaru warranty for the catalytic converter is 80k. We're into it for thousands of dollars, but the MOST IMPORTANT reason I'm making this report is that SOMEONE IS GOING TO GET KILLED ON THE FREEWAY because of these failing catalytic converters, and it might not be people in the Subarus. The car just died at that speed in the left lane, and it was a miracle no one was killed. (I'm not sure if I have my date quite right. My calendar is not at hand). Note: Subaru is having a hard time getting the part, a delay, they say, of many days, so that makes me think that this is happening widely, and that these catalytic converters are getting replaced at an unanticipated rate.

Filed Dec 29, 2024 · Engine · CA

We were driving at 70mph on the freeway, left lane, and suddenly the car lost power as if the fuel pump went out. We had to suddenly get over to the shoulder of the freeway, almost got hit, then limped along the shoulder until we called a tow truck which towed us 40 miles to Subaru dealer. The dealer looked at the car and "couldn't find anything." Now we are afraid to drive the car.

Filed Jul 6, 2024 · Driver assistance, Electrical · FL

Starting up the car in the morning after a long day stuck in traffic (over 100 degree F weather), moved about 5 feet then the eyesight system stopped working, rear braking stopped, and power steering gave out - the car started and the engine ran normally. The car was abandoned as unsafe until diagnostics could be performed and a different car was used to get around . That evening the car started up fine, also the next morning to reproduce conditions. Tested the battery, which showed "good" (93% charge/40%healthy). I suspect that, in the morning the A/C, headlights, radio, backup lights, etc... put a large draw on the electrical system resulting in a system wide shutdown of adaptive features - However loss of power steering is insane and can easily result in death if it happens while driving especially while making a turn if the driver is not prepared/strong enough to force it. The linking of non-critical system to help the driver to an essential system is just asking for trouble.

Filed Dec 15, 2022 · Airbags, Seats · 94,000 miles · WV

The contact owns a 2018 Subaru Forester. The contact stated that the front passenger’s side seat was extremely hot. Additionally, air bag warning light was illuminated. The contact also stated that the taillights were inoperable. While his wife was driving at an undetermined speed, the vehicle inadvertently lost power steering functionality. The vehicle was taken to the dealer where the taillight bulbs were replaced; however, the failure persisted. The manufacturer was not contacted. The approximate failure mileage was 90,400.

Filed Jun 14, 2021 · Acceleration, Fuel system · GA

The 2018 Forrester XT was taken to Subaru Dealer (Gwinnett) for a routine 42,000-mile service. There were no issues with the car. Shortly after picking up and driving approximately 30 miles the car stalled twice at traffic lights. The engine was restarted but started to exhibit sluggish and erratic acceleration, especially from 0-45 MPH. The car was taken back to Gwinnett Subaru the next day. They did some data retrieval and found a mass airflow event, cleaned the air filter, test drove the car, and released it to us. The next few days, the same problems were experienced but the car did not stall. At one point, at a traffic light, the car would simply not accelerate even with full pedal pressure which was gradually increased. When it finally did, it was uncontrolled and erratic. Highway driving once speed was reached seemed normal, but any acceleration from a slower speed was problematic. On Monday 6-14-2021 the car was taken back to the dealer due to serious concerns about safety and the possibility of the loss of power when critically needed or when on the highway. The dealer promised to investigate the problem further. That evening, we were informed that it was their assessment that the car would need a brand new CVT transmission. The car has approximately 41,100 miles and we were told that it would be covered by the 5 years/60,000 miles powertrain warranty. Expected to take 7-10 days for repair.

Filed Nov 25, 2019 · Transmission · CA

Tl* the contact owns a 2018 subaru forester. While driving various speeds, the vehicle stalled and sometimes lost power. The vehicle restarted after it was shut off. There was no warning indicator illuminated. The vehicle was taken to subaru sherman oaks (888‑690‑1521, located at 5747 van nuys blvd, van nuys, ca 91401) where the technician test drove the vehicle, but was unable to duplicate the failure. The manufacturer was made aware of the failure and stated that someone would follow up with the dealer. The contact was not called back. The vehicle was not repaired. The failure mileage was not provided.

Filed Sep 5, 2018 · Electrical, Engine · 4,200 miles · KS

Tl* the contact owns a 2018 subaru forester. While driving approximately 80 MPH, the vehicle suddenly lost engine power. The vehicle was coasted to an exit ramp. The contact stated that the engine was still idling extremely low and the vehicle was turned off and restarted. Rimrock subaru (324 s 24th st w, billings, mt 59102, (406) 651-5200) replaced the fuel pump and fuel pump control module; however, the failure continued. The dealer referred the contact to the manufacturer and offered a trade-in for a 2018 subaru outback. The manufacturer was not contacted. The vehicle was not repaired. The approximate failure mileage was 4,200. **tr