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2021 Subaru Outback problems

The most common problem on the 2021 Subaru Outback is windows, wipers and visibility, typically around 3,000 miles. Its complaint count is close to a typical Outback model year.

Typical yearClose to a typical year
Year score
72/100
Owner complaints
300
Recalls
4
Service bulletins
502
Worst area
Visibility
Fuel economy
26-29mpg

The worst 2021 Subaru Outback problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

Specific symptoms reported on the 2021 Subaru Outback

Windshield crack 85Battery drain 21Adaptive cruise 16Screen failure 15Won't start 15Check engine light 10Lane assist 7Loss of power 7Stalling 7Collision warning 6Sudden acceleration 6Sunroof shattered 6Jerking 5Warning lights 5Wipers 5

Trouble codes owners of the 2021 Subaru Outback mention

P2682 2

Recalls 4

Air bags: sensor: occupant classification: front passengerReported March 22, 2024 · 118,723 vehicles affected
What is wrong
Subaru of America, Inc. (Subaru) is recalling certain 2020-2022 Outback and Legacy vehicles. A capacitor in the sensors for the Occupant Detection System (ODS) may crack and short circuit, which can prevent the front passenger air bag from deploying in a crash.
Risk
An air bag that does not deploy during a crash can increase the risk of injury.
Remedy
Dealers will replace the ODS sensors on the front passenger seat, free of charge. Owner notifications were mailed February 3, 2025. Owners may contact Subaru customer service at 1‑844‑373‑6614. Subaru's number for this recall is WRA-24.

Recall number 24V227000 · Recall details

Power train: automatic transmission: park/neutral start interlock switchReported November 9, 2023 · 95,830 vehicles affected
What is wrong
Subaru of America, Inc. is recalling certain model year 2021 Crosstrek, 2022 Forester, 2021-2023 Legacy, and Outback vehicles. An insufficient weld may allow water to enter the inhibitor switch, causing it to fail.
Risk
An inoperative inhibitor switch may prevent the reverse lights from illuminating and the rearview camera image from displaying, increasing the risk of a crash.
Remedy
Dealers will replace the inhibitor switch, free of charge. Owner notification letters were mailed January 8, 2024. Owners may contact Subaru customer service at 1‑800‑782‑2783. Subaru's number for this recall is WRQ-23.

Recall number 23V755000 · Recall details

Power train: driveline: chain/beltReported July 8, 2022 · 182 vehicles affected
What is wrong
Subaru of America, Inc. (Subaru) is recalling certain 2020-2021 Outback and Legacy vehicles. A programming error in the Transmission Control Unit (TCU) may allow the clutch to engage before the drive chain is completely clamped.
Risk
An improperly secured drive chain may slip and break, causing a loss of drive power and increasing the risk of a crash.
Remedy
Dealers will reprogram the TCU, inspect TCU data for chain slip, and visually inspect the chain guide. If evidence of chain slippage or damage is found, the transmission will be replaced. Repairs will be performed free of charge. Owner notification letters are expected to be mailed August 24, 2022. Owners may contact Subaru's customer service at 1‑844‑373‑6614. Subaru's number for this recall is WRK-22. This recall is an expansion of previous recall number 21V‑955.

Recall number 22V485000 · Recall details

Power train: shift linkage/cable/rodReported January 26, 2021 · 383 vehicles affected
What is wrong
Subaru of America, Inc. (Subaru) is recalling certain 2021 Outback and Impreza vehicles. The continuously variable transmission (CVT) select lever cable nut may not have been tightened properly, allowing the nut to loosen.
Risk
A loose nut can lead to a lost of retention in the CVT select lever cable and the gear selector not functioning properly, increasing risk of crash.
Remedy
Subaru will notify owners, and dealers will inspect, and, if necessary, tighten the nut, free of charge. The recall began February 12, 2021. Owners may contact Subaru customer service at 1‑844‑373‑6614. Subaru's number for this recall is WRA-21.

Recall number 21V024000 · Recall details

See all 4 recalls for the 2021 Subaru Outback

Technical service bulletins for the 2021 Subaru Outback 502

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

See all 502 bulletins for the 2021 Subaru Outback

2021 Subaru Outback fuel economy

Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.

EngineDriveCityHighwayCombined
2.5L 4‑cylAWD263329
2.4L 4‑cylAWD233026

What 2021 Subaru Outback owners say

Most recent owner complaints, unedited.

Filed Nov 5, 2026 · NC

Radio sound stays muted including for in vehicle phone calls

Filed Oct 26, 2026 · Visibility · FL

Windshield wiper fluid level sensor will not turn off even though reservoir is full

Filed Oct 14, 2026 · Electrical · FL

Battery died multiple times. A DMC module went bad.

Filed Oct 13, 2026 · TN · fire

My car caught fire this morning. It had been making a little noise but nothing I thought couldn't wait til the next service. It started to have a smell, and then while I was waiting at a light with my son in the car, I noticed smoke from under the hood. I turned around and parked in a parking lot. The smoke got worse. My son and I got out of the car and moved away from it. As soon as I saw flames I called 911. The fire dept came to put out the fire. It is in the process of being looked at by insurance. I looked later after a bystander said something and read there was a recall on 2021 outbacks with turbo engines, which is what ours is. We got the car it's usual service a month ago and no one said anything about any recalls. I don't know if it's related or not. No warning lights or anything came on before this happened. It had just been making noise for a few days, then the smoke and fire this morning.

Filed Aug 26, 2026 · Electrical · VA

Vehicle's Auto Start-Stop system shut the engine off while stopped at a red light in [XXX], in rainy conditions in late XXX at approximately 29,000 miles. When the brake was released after the light turned green, the engine did not restart, leaving it stopped in the travel lane in live traffic. The driver had to use a portable jump starter to get it running again. This was not isolated — repeated failure-to-start incidents in prior weeks had already prompted carrying a portable jump starter in the vehicle. At the time we believed this was a failing 12V battery. The original battery was replaced XXX with a new aftermarket AGM battery. Despite that replacement, the vehicle has continued to have multiple complete battery drain if left parked for multiple days (but less than a week), indicating the restart failures were likely caused by an underlying parasitic electrical draw rather than a simple worn-out battery. Subaru's own Technical Service Bulletin 07-199-21R, "Measurement of Dark Current (Standby Current Draw)," describes this exact failure pattern (batteries/vehicles going dead over time due to standby current traced to the VDC module and/or Power Rear Gate control module) for this model and model-year range. A pending federal class-action lawsuit, [XXX] v. Subaru of America, Inc., Case No. XXX (D.N.J., filed XXX), alleges an electrical-system defect preventing one or more control modules from entering a proper low-power sleep state, causing parasitic battery drain, and specifically names 2021-2022 Outback vehicles. We are concerned this defect can cause the Auto Start-Stop system to fail to restart the engine at a stop in live traffic, creating a real risk of being rear-ended or blocking an intersection, as happened in the incident described above. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 20, 2026 · Engine, Transmission · CA

Good Day! I bought my 2021 Subaru Outback XT Onyx in Jan 2021. I had waiting 6 yrs for Subaru to use the Turbo Motor in the Outback again. I've had this car for 5 years with my warranty running out Jan 2026, but I only drive 5000-7000 miles per/yr. Current odometer is 29,901 miles. At my most recent oil change service at the Dealer, they showed me a video of my cars drivetrain from underneath. There were two bad seal leaks. One at the transmission pump housing and the other at the Upper Oil Pan. I had been there for an oil change a year earlier for the same service and there was no mention of these issues! After speaking with the service advisor, he said to call Subaru Customer Advocates. They listened to my situation and a few days later offered a $1400 credit for a $4000 job that involves the removal of my cars engine (upper oil pan) to replace it because it's bolted to the frame there. The other leak seal involves dropping the transmission. These are major repairs that following will dampen my ownership experience after decades of Subaru praise by Americans. I researched this issue online and found out there was a manufacturing defective regarding the silicone liquid seals they used for 2020-2022 Outback, Ascent, & WRX! This procedure was used throughout the driveline with the Turbo Motor & CTV Trans. There are 1000s of accounts of this defect placing burden on the owners of these cars who bought them in good faith. I did the research, called the dealer & Subaru with the discovery & overall complaint! I asked for 80% to 100% help with these repairs because how many more will I have to deal with after these two are repaired??? I have received zero responses from either after expressing that this was a known defect, Bullitens went to all the dealers, nothing was mentioned to the owners, and they've just covered those cars still under warranty. Since I didn't drive enough, the seal issues on my car took longer to start leaking, and then out of warranty. HELP!

Filed Aug 16, 2026 · Electrical · CA

I am reporting a serious and intermittent steering safety issue with my 2021 Subaru Outback. On two separate occasions, the vehicle suddenly lost what appeared to be power-steering assistance while the vehicle was in motion, causing the steering wheel to become extremely difficult to turn. The first incident occurred while I was driving on the highway and going down a ramp. The steering suddenly became extremely difficult to operate and a warning symbol illuminated on the dashboard. I was able to maintain enough control of the vehicle to safely pull over to the side of the road. I turned the vehicle off and restarted it, and the warning light disappeared and normal steering operation returned. The second incident occurred while I was making a turn into a neighbor. The same problem occurred: the steering suddenly became extremely difficult to turn and a warning light appeared on the dashboard. After turning the vehicle off and restarting it, the steering returned to normal. The intermittent nature of this problem is concerning because restarting the vehicle temporarily restores normal steering, but the failure has now occurred more than once without warning. One of the incidents occurred while traveling on the highway, creating a significant risk of loss of vehicle control and a collision. I am concerned that this may involve the vehicle’s electric power-steering system or related electrical components. I am reporting this to the federal safety agency because a sudden loss of steering assistance while a vehicle is moving presents a serious safety risk, particularly while turning or traveling at highway speeds. I am requesting that the federal safety agency document this complaint and evaluate whether similar steering failures have been reported by other owners of 2021 Subaru Outback vehicles.

Filed Aug 7, 2026 · Acceleration · 70,000 miles · WA · crash · 1 injury

The contact owned 2021 Subaru Outback. The contact stated that while driving at 5 MPH turning a right hand corner into a shopping center, the vehicle began to accelerate without the contacts consent. and the contact proceeded to frantically apply the brakes. The vehicle came to a stop upon impact with a brick wall impacting the front drivers side of the vehicle. All of the airbags were deployed. The vehicle was going 43 mph at the time of the crash. The was towed to a junk yard. No warning lights or strange sounds were emitted prior to the crash. A police report was filed. The contact was injured while seated in the drivers seat. No one outside of the vehicle was injured. The contact sustained whip lash and bruising from the seat belt. Medical treatment was needed for the injuries. The local dealer was contacted, and the black box was inspected. The manufacturer was notified of the failure. The failure mileage was 70,000.

Filed Jul 31, 2026 · Electrical · OR

My 2021 Subaru Outback suffered a failure of the Oil Control Valve (OCV), a sealed Subaru component with no maintenance interval, no inspection procedure, and no preventative service. This failure allowed engine oil to migrate into multiple wiring harnesses and modules, causing extensive electrical contamination. This is not normal wear and tear. It is a latent defect in a Subaru component. Due to the failure of this sealed component the Subaru dealership and a second independant shop have recommended replacing the entire electrical wiring harness at over and estimated $15,000. Even if the entire harness is repalaced the extensive contamination may find its way into electrical connectors even after replacement of the harness. The fact that this contamination was so wide spread, and there were absolutly no warnings that indicated the widespread contamination is alarming. I guess the thought is that different electrical components could just stop working. This seems like a serious safety concern. It is impossible to know how long the contamination was spreading through the car since there are no errors or warnings that indicated an issue.

Filed Jul 6, 2026 · Acceleration, Driver assistance · NC · crash

I was already parked in a spot in a public parking lot. I tapped the accelerator pedal to move the car a few inches. The vehicle responded by violently accelerating, hitting a vehicle directly in front of me in another parking space. I applied my brake but the car would not stop. The force of the acceleration pushed the car out of the it's spot and it hit a curb and tree appox 30 ft away. In defensive move I turned my wheels to the right and continue to try and brake. This caused my car to hit the car on the right side of me. Property Damage occured. No injuries. Vehicle defect.

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Compare the 2021 Subaru Outback

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Other model years

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Questions about the 2021 Subaru Outback

Is the 2021 Subaru Outback reliable?

Owners have filed 300 complaints about the 2021 Subaru Outback, close to a typical Outback model year.

What is the 2021 Subaru Outback year score?

The 2021 Subaru Outback scores 72 out of 100 (average). The score compares it with the other model years of the Subaru Outback: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.

What is the most common problem with the 2021 Subaru Outback?

Windows, wipers and visibility, with 108 complaints, typically around 3,000 miles. Next is electrical (76).

How many recalls does the 2021 Subaru Outback have?

4 recalls, covering air bags and power train.

What year does the Subaru Outback have the most visibility problems?

The Subaru Outback model years with the most visibility complaints are 2019 (387 complaints), 2020 (383 complaints) and 2022 (280 complaints).

What gas mileage does the 2021 Subaru Outback get?

Official estimates for the 2021 Subaru Outback range from 26 to 29 mpg combined. The most efficient version (2.5L 4-cyl, AWD) gets 26 city and 33 highway.

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