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2020 Subaru Ascent Recalls, Issues & Maintenance

The 2020 Subaru Ascent carries 5 open NHTSA recalls — most recently covering control module (tcm/pcm/tecm) and tie rod assembly. Owners report 6 recurring issue clusters, led by “Transmission fluid migration into wiring harness.” Subaru's symmetrical AWD system places unusually high demands on differential fluid and transfer case service — skipping these is the most common cause of premature drivetrain wear. Older Subarus with the EJ25 engine (pre-2011) require timing belt replacement; FB and FA engines (2011+) use a maintenance-free chain. Subaru's published intervals below align with the owner's manual Schedule II (severe) which most US drivers qualify for.

5 Open Recalls

Source: NHTSA

POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

Campaign #21V955000 · Sep 12, 2021

Issue: Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2020 Legacy and Outback 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.

Fix: 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 were mailed August 19, 2022. This recall includes all vehicles previously recalled under 19V-855. Vehicles previously recalled under 19V-855 will need to have the new remedy performed for this recall once available. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WRK-21.

STEERING:LINKAGES:TIE ROD ASSEMBLY

Campaign #21V954000 · Sep 12, 2021

Issue: Subaru of America, Inc. (Subaru) is recalling certain 2020 Ascent vehicles. Due to an incorrect tapered hole in the housing, the front tie rod ends may not fit properly. The improper fit can result in the tie rods and housings being deformed during assembly and service replacement if excessive torque is applied.

Risk: The tie rods may separate from the housing, causing a loss of steering control and increasing the risk of a crash.

Fix: Dealers will replace the left and right front tie rod ends and housings, free of charge. Owner notification letters were mailed February 7, 2022. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WRL-21.

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Campaign #21V587000 · Jul 29, 2021

Issue: Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2018 Forester, 2018-2020 Impreza, Legacy, Outback, 2018-2019 BRZ, WRX, and Toyota 86 vehicles. The low-pressure fuel pump inside the fuel tank may fail.

Risk: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.

Fix: Dealers will replace the low-pressure fuel pump, free of charge. Owner notification letters were mailed September 24, 2021. Subaru and Toyota owners may call customer service at 1-844-373-6614. Subaru's number for this recall is WRG-21.

ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH

Campaign #22V907000 · Aug 12, 2022

Issue: Subaru of America, Inc. (Subaru) is recalling certain 2019-2022 Ascent vehicles. The ground bolt that secures the ground terminal of the Positive Temperature Coefficient (PTC) heater may have been improperly fastened, which could result in melting of the ground terminal and surrounding components.

Risk: A melting ground terminal increases the risk of a fire.

Fix: Owners are advised to park their vehicle away from structures and to avoid leaving the vehicle unattended while the engine is running. An owner who notices or smells smoke coming from the dash or driver's footwell area should immediately stop operating the vehicle and turn the ignition switch to the "Off" position. Dealers will replace the PTC heater ground bolts and if necessary, replace the ground wire and the connector holder, free of charge. Owner notification letters are expected to be mailed February 6, 2023. Owners may contact Subaru's customer service at 1-844-373-6614. Subaru's number for this recall is WRL-22.

EQUIPMENT:OTHER:LABELS

Campaign #26V436000 · Jul 7, 2026

Issue: Subaru of America, Inc. (Subaru) is recalling certain 2026 Crosstrek Hybrid, 2025-2026 Forester Hybrid, Forester, and 2019-2026 Ascent vehicles. These vehicles were manufactured with an incorrect Gross Axle Weight Rating (GAWR) on the certification label. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) 110, "Tire selection and rims."

Risk: An incorrect GAWR label may lead to an overloaded vehicle, increasing the risk of a crash.

Fix: Subaru will mail a new certification label to owners, free of charge. Owners may also choose to have a dealer install the new label, free of charge. Letters informing owners of the safety risk were mailed August 24, 2026. Additional letters will be mailed once the remedy is available. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WRH-26.

Recall data refreshed Sep 6, 2026.

Known issues for this vehicle

What drivers and federal regulators have officially reported about the 2020 Subaru Ascent.

Reported to NHTSA

Transmission fluid migration into wiring harness

POWER TRAIN, ELECTRICAL SYSTEM, ENGINE

4 NHTSA complaints · 2025-05 → 2026-05

“The pressure sensor coming out of the transmission has failed, and it's pushed transmission fluid throughout the engine harness, transmission harness, the bull harness in the dash and the 02 sensors. All of those have been damaged”
— Owner report, NHTSA ODI #11738197
“Although the NHTSA form does not include a transmission category, this complaint concerns a critical transmission-related defect in my 2020 Subaru Ascent, which caused oil migration into the wiring harness and contamination of the Engine Control Module (ECM)”
— Owner report, NHTSA ODI #11714081
“My 2020 Subaru Ascent experienced a sudden failure of critical safety systems due to CVT fluid leaking through the transmission pressure switch into multiple electrical components. This fluid leak damaged several wire harnesses and the Engine Control Module (ECM)”
— Owner report, NHTSA ODI #11658449

Read all complaints on NHTSA →

12V battery drain and no-start condition

ELECTRICAL SYSTEM

46 NHTSA complaints · 2021-04 → 2023-11

“Several times my 2020 Subaru Ascent has failed to start and required a jump. I have taken my vehicle into the Subaru dealers 3 times for this problem. Every time they tell me something was left on that drained the battery when the vehicle was turned off”
— Owner report, NHTSA ODI #11439867
“The care continues to drain power resulting in dead battery. We have had continuous issues since purchasing the vehicle. The Dealer even installed a higher quality battery and due to Subaru admitting tot the problem”
— Owner report, NHTSA ODI #11444224
“Leaving my lift gate open for even a short amount of time drains the battery. Even after charging the battery manually my battery went completely dead after one year and three months”
— Owner report, NHTSA ODI #11425137

Read all complaints on NHTSA →

Spontaneous windshield cracking

VISIBILITY/WIPER

25 NHTSA complaints · 2021-04 → 2023-08

“On Tuesday, January 3, I had a THIRD chip in my windshield. This just happened yesterday, so I have not had it evaluated yet. HOWEVER, this will be the THIRD chip that I will have to have repaired in the three short years I've owned this vehicle”
— Owner report, NHTSA ODI #11500139
“We've had this car for a little over 2 years and have had 3 cracked windshields, seems like anything that hits it causes a crack. I've been driving for over 45 years and multiple cars and have had cracked windshields 2 or 3 times. This doesn't make any sense”
— Owner report, NHTSA ODI #11490861
“18 INCH CRACK IN WINDSHIELD ON PASSENGER SIDE, HAPPENED SPONTANEOUSLY, NOTHING STRUCK THE WINDSHIELD AT ANY TIME.. JUST NOTICED IT TODAY 4/7/21 AT 0930”
— Owner report, NHTSA ODI #11406880

Read all complaints on NHTSA →

Brake rotor warp and pedal vibration

SERVICE BRAKES

9 NHTSA complaints · 2021-05 → 2024-02

“The braking system on the vehicle does not operate as expected on the vehicle. As a result a vehicle that only has 40k miles on a daily driver, is on its 3 set of rotors, 2nd set of brake pads( i declined having them changed at the 40k service) and 2nd set of tires”
— Owner report, NHTSA ODI #11519244
“At around 18,000 miles when applying the brakes, the vehicle would shake and vibrate. By 20,000 miles the vibration was excessive affecting the ability to steer straight when braking. The dealer told me that they were aware of the issue with this year/model”
— Owner report, NHTSA ODI #11497538
“16000 miles. Front brakes vibrate hard when you press the brake. The whole front of the car vibrates it feels the same when the ABS system vibrates. Really scary sound and vibration”
— Owner report, NHTSA ODI #11429416

Read all complaints on NHTSA →

Front strut noise and premature replacement

SUSPENSION

8 NHTSA complaints · 2023-02 → 2026-07

“My strut bearings have been replaced several times in the drivers sides, my shock and strut has been replaced twice on the drivers side and now the passenger side is doing the same thing”
— Owner report, NHTSA ODI #11751605
“Both front struts have failed within 55000 miles, the passenger one had a failure at 43,000 miles and the driver side has failed at 54000 miles. The dealership stated that the struts had "corrosion" and were not damaged”
— Owner report, NHTSA ODI #11535024
“The contact owns a 2020 Subaru Ascent. The contact stated that while driving at an undisclosed speed, there was an abnormal rumbling sound coming from the undercarriage while driving over bumps in the roadway. No warning light was illuminated”
— Owner report, NHTSA ODI #11666835

Read all complaints on NHTSA →

CVT slipping and hesitation during acceleration

POWER TRAIN

46 NHTSA complaints · 2021-08 → 2026-07

“The Transmission is slipping on my 2020 Ascent. I had the recall wrk-21 performed in July of 2025. Over the last 6 months the car has been hesitant to go at low speeds and shakes at high speeds. Over the last month the transmission started to slip while accelerating”
— Owner report, NHTSA ODI #11753615
“The CVT transmission has failed and been replaced three times despite proper maintenance. Subaru has replaced the transmission multiple times under warranty, but the failure continues to recur”
— Owner report, NHTSA ODI #11708448
“The contact owns a 2020 Subaru Ascent. The contact stated that while his wife was driving at 55 MPH, the vehicle stalled. No warning lights illuminated. The contact stated that the failure was related to NHTSA Campaign Number: 21V955000 (Power Train)”
— Owner report, NHTSA ODI #11619784

Read all complaints on NHTSA →

Issues on other model years

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 11, 2026. Investigation data refreshed Sep 11, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Essential maintenance

Critical for safety and preventing major damage

Engine Oil & Filter

Every 6,000 mi

Replace 0W-20 full-synthetic oil and filter every 6,000 miles. WRX/STI 2.0L/2.5L turbo: 3,750 miles. Non-turbo FB engines: 6,000 miles severe / 10,000 normal.

Estimated cost — typical U.S. ranges

Dealer

~$120–$160

Shop

~$85–$115

DIY

~$25–$55

Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.

Tire Rotation

Every 7,500 mi

Rotate tires every 7,500 miles. Critical on Subaru AWD — uneven tread depth across all 4 tires (>2/32") forces the center differential to bind, damaging the AWD coupling.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Often free at the shop where you bought the tires — worth asking before paying.

Brake Inspection

Every 7,500 mi

Inspect brake pads, rotors, calipers, and parking brake every 7,500 miles. Outback and Forester pads commonly last 35,000-50,000 miles depending on terrain.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.

Front Differential / Manual Transmission Fluid

Every 30,000 mi

Replace front differential and manual transmission fluid every 30,000 miles. CVT models use proprietary Subaru CVT fluid — a separate item.

Estimated cost — typical U.S. ranges

Dealer

~$150–$195

Shop

~$105–$135

DIY

~$20–$50

Rear Differential Fluid

Every 30,000 mi

Replace rear differential fluid every 30,000 miles. Use Subaru 75W-90 GL-5 — substitutes can cause whining noises within months.

Estimated cost — typical U.S. ranges

Dealer

~$150–$195

Shop

~$105–$135

DIY

~$20–$50

CVT Fluid (Lineartronic)

Every 30,000 mi

Subaru CVT models (Outback, Legacy, Forester, Crosstrek, Impreza, Ascent): replace Lineartronic CVT fluid every 30,000 miles severe / 60,000 normal. Subaru High-Torque CVT-II fluid only — incorrect fluid destroys the chain-and-pulley system.

Estimated cost — typical U.S. ranges

Dealer

~$360–$500

Shop

~$255–$355

DIY

~$80–$180

CVT fluid is manufacturer-specific and pricey — do NOT substitute conventional ATF.

Timing Belt (EJ25 engines, pre-2011)

Every 105,000 mi

Older Subarus with the EJ25 boxer engine (Forester, Outback, Legacy 1996-2010): replace timing belt every 105,000 miles. FB and FA boxer engines (2011+) use a chain — no scheduled replacement.

Estimated cost — typical U.S. ranges

Dealer

~$935–$1175

Shop

~$655–$825

DIY

Pro only

On interference engines, a snapped belt destroys valves. Worth doing on schedule. Bundle water pump + tensioner — labor is already there.

Brake Fluid

Every 30,000 mi

Replace DOT 3 brake fluid every 30,000 miles or 30 months. Subaru's brake hold and EyeSight automatic emergency braking depend on uncontaminated fluid.

Estimated cost — typical U.S. ranges

Dealer

~$180–$200

Shop

~$125–$140

DIY

~$10–$25

DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.

Important maintenance

Keeps your vehicle running smoothly and efficiently

Engine Air Filter

Every 30,000 mi

Replace engine air filter every 30,000 miles. WRX/STI: inspect every oil change due to the higher airflow demand of the turbo intake.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

5-minute job on most cars; the airbox lid usually has clips, no tools needed.

Spark Plugs

Every 60,000 mi

Iridium plugs every 60,000 miles on FB engines. WRX/STI 2.5L turbo: 30,000 miles due to higher cylinder pressures and EGT.

Estimated cost — typical U.S. ranges

Dealer

~$285–$390

Shop

~$200–$275

DIY

~$25–$100

Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.

Super Coolant

Every 30,000 mi

Subaru Super Coolant (blue): first change at 137,500 miles or 11 years, then every 30,000 miles. Do not substitute green or orange — head gasket sealing chemistry depends on the formula.

Estimated cost — typical U.S. ranges

Dealer

~$285–$330

Shop

~$200–$235

DIY

~$25–$60

Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.

Recommended maintenance

Extends the life of your vehicle and improves comfort

Cabin Air Filter

Every 15,000 mi

Replace cabin air filter every 15,000 miles. Behind the glove box on most Subaru models.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.

Fatal crash history & reported problems

Occupant deaths in fatal crashes (FARS)

4 crashes 2010–2024

FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road. How to read this number

Owner-reported problem signals

Separate from the federal fatality data above: complaints owners filed with NHTSA about this year and model. These are reports of problems, unverified, and are counted here only as signals.

6

complaints mentioning a crash

1

complaints mentioning a fire

Reviewed known issues for this vehicle·Open recalls for this vehicle

Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.

How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.

This maintenance schedule for the 2020 Subaru Ascent reflects Subaru's published service intervals. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

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