WRP-23 – Front Driveshaft Assemblies May Crack and Break – 2024 Subaru Crosstrek, Impreza, 2023-2024 Forester, & 2023 WRX

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-754 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Subaru of America, Inc. Submission Date : NOV 09, 2023 NHTSA Recall No. : 23V-754 Manufacturer Recall No. : WRP-23 Manufacturer Information : Manufacturer Name : Subaru of America, Inc. Address : One Subaru Drive Camden NJ 08103 Company phone : 844-373-6614 Population : Number of potentially involved : 3,732 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2024-2024 Subaru Crosstrek Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS Descriptive Information : -Description of the issue: The affected vehicles may be equipped with a front drive shaft assembly with an outer race that could crack. -The basis for how the recall population was determined: Vehicles potentially equipped with the affected front drive shaft assemblies were identified using vehicle production records. -How the recalled products differ from products that were not included in the recall: Vehicles equipped with properly manufactured front drive shaft assemblies are not affected. The recall population includes certain 2024 model year Crosstrek vehicles. The number of potentially affected Crosstrek vehicles is 2,835. Production Dates : SEP 05, 2023 – SEP 13, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 23V-754 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 2 : 2024-2024 Subaru Impreza Vehicle Type : LIGHT VEHICLES Body Style : STATIONWAGON Power Train : GAS Descriptive Information : -Description of the issue: The affected vehicles may be equipped with a front drive shaft assembly with an outer race that could crack. -The basis for how the recall population was determined: Vehicles potentially equipped with the affected front drive shaft assemblies were identified using vehicle production records. -How the recalled products differ from products that were not included in the recall: Vehicles equipped with properly manufactured front drive shaft assemblies are not affected. The recall population includes certain 2024 model year Impreza vehicles. The number of potentially affected Impreza vehicles is 156. Production Dates : SEP 06, 2023 – SEP 07, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 3 : 2023-2024 Subaru Forester Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : GAS Descriptive Information : -Description of the issue: The affected vehicles may be equipped with a front drive shaft assembly with an outer race that could crack. -The basis for how the recall population was determined: Vehicles potentially equipped with the affected front drive shaft assemblies were identified using vehicle production records. -How the recalled products differ from products that were not included in the recall: Vehicles equipped with properly manufactured front drive shaft assemblies are not affected. The recall population includes certain 2023 and 2024 model year Forester vehicles. The number of potentially affected Forester vehicles is 328. Production Dates : SEP 04, 2023 – SEP 14, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 23V-754 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 4 : 2023-2023 Subaru WRX Vehicle Type : LIGHT VEHICLES Body Style : 4-DOOR Power Train : GAS Descriptive Information : -Description of the issue: The affected vehicles may be equipped with a front drive shaft assembly with an outer race that could crack. -The basis for how the recall population was determined: Vehicles potentially equipped with the affected front drive shaft assemblies were identified using vehicle production records. -How the recalled products differ from products that were not included in the recall: Vehicles equipped with properly manufactured front drive shaft assemblies are not affected. The recall population includes certain 2023 model year WRX vehicles. The number of potentially affected WRX vehicles is 413. Production Dates : SEP 01, 2023 – SEP 13, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Cracks may occur in the outer race of the front drive shaft assemblies. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Over time, a cracked outer race could break, potentially resulting in loss of motive power. Additionally, if the outer race breaks, the vehicle may roll when parked if the parking brake is not applied. Both conditions increase the risk of a crash. Description of the Cause : A hole in a water pipe caused a reduction in the flow rate of cooling water around the outer race during the heat treatment process on the supplier’s manufacturing line, resulting in improper cooling to the inner surface of the race and causing quench cracking to the outer surface of the race. Identification of Any Warning that can Occur : None Involved Components : Part 573 Safety Recall Report 23V-754 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : DRIVE SHAFT AY Component Description : Drive Shaft Assy Component Part Number : 28321FN000 Component Name 2 : DRIVE SHAFT AY Component Description : Drive Shaft Assy Component Part Number : 28321FN030 Component Name 3 : DRIVE SHAFT AY Component Description : Drive Shaft Assy Component Part Number : 28321SJ010 Component Name 4 : DRIVE SHAFT AY Component Description : Drive Shaft Assy Component Part Number : 28321VC020 Supplier Identification : Component Manufacturer Name : NTN Corporation Address : 1578 Higashikaizuka, Iwata Shizuoka Foreign States 438-0037 Country : Japan Chronology : August 30, 2023 – The supplier identified quench cracking on the outer diameter of the outer race during magnetic particle inspection. The supplier’s initial findings indicated that there had been no outflow to Subaru. September 14, 2023 – After a reevaluation of scope, the supplier determined that affected product had been shipped to Subaru. Subaru received information from the supplier indicating a crack on the surface of an outer race of the front drive shaft assembly. Subaru and the supplier initiated a joint study to determine the safety impact of a crack in the outer race. Part 573 Safety Recall Report 23V-754 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 October 2023 – The supplier presented their findings of the scope of affected parts shipments. Subaru worked with the part supplier to trace the affected parts based on the lot number information. November 2, 2023 – For the entire population of potentially affected vehicles, Subaru is not aware of any field reports, warranty claims, or VOQs. However, out of an abundance of caution, Subaru decided to conduct a safety recall. Subaru is not aware of any reports involving accident or injury related to this condition. Description of Remedy : Description of Remedy Program : For all potentially affected vehicles, Subaru dealers will inspect the lefthand and right-hand front drive shafts and where necessary, replace them with a new one. Subaru will provide reimbursement to owners for repairs according to the general plan submitted in May 2022. How Remedy Component Differs from Recalled Component : The replacement drive shaft assemblies were assembled with outer races that received the appropriate cooling during the manufacturing process. Identify How/When Recall Condition was Corrected in Production : The supplier repaired the cooling water pipe on September 1, 2023. Recall Schedule : Description of Recall Schedule : Dealer notification is expected to occur by November 10, 2023 Owner notification is scheduled to begin on or about January 8, 2024 Planned Dealer Notification Date : NOV 10, 2023 – NOV 10, 2023 Planned Owner Notification Date : JAN 08, 2024 – JAN 08, 2024 * NR – Not Reported

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Subarunet Announcement To: All Subaru Retailers From: Subaru of America, Inc. Date: November 10, 2023 New Safety Recall/STOP SALE: WRP-23 Driveshaft Failure Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2023 model year WRX vehicles, certain 2024 model year Crosstrek and Impreza vehicles, and certain 2023-2024 model year Forester vehicles. Description of the Defect and Safety Risk The vehicles included in this recall may be equipped with a front drive shaft assembly with an outer race that could crack, due to improper cooling during the manufacturing process. Over time, a cracked outer race could break, potentially resulting in loss of motive power. Additionally, if the outer race breaks, the vehicle may roll when parked if the parking brake is not applied. Both conditions increase the risk of a crash. Remedy For all potentially affected vehicles, Subaru dealers will inspect the left-hand and right-hand front drive shafts and where necessary, replace them with a new one at no cost to the customer. Affected Vehicles A total of 3,732 U.S. vehicles will be included in this recall as listed below. Not all vehicles in the production range listed below are affected by this recall. Coverage must be confirmed by using the Vehicle Coverage Inquiry function on subarunet.com prior to repair. This information will be available later today. Model Year Carline Production Date Range 2023 WRX 9/1/2023 – 9/13/2023 2024 Crosstrek 9/5/2023 – 9/13/2023 2024 Impreza 9/6/2023 – 9/7/2023 2023-2024 Forester 9/4/2023 – 9/14/2023 Please be advised that the parts supply for this recall is not yet available. Therefore, the WRP23 recall coverage status for the affected VINs will be ‘Open-Remedy not yet available’ until the parts are available. We expect parts to be available in December, at which time the VIN status will be updated to allow repairs to begin. Retailers will be notified when this update occurs. Retailer Responsibility Please be advised that it is a violation of Federal law for a dealer to deliver a new motor vehicle covered by a recall under a sale or lease until the defect is remedied. Therefore, any Authorized Subaru Retailer failing to perform the applicable service procedures to correct all affected vehicles in their inventory prior to the vehicle being placed in service may be subject to civil penalties of up to $26,315 per violation (i.e., for each vehicle), as provided in 49 CFR §578.6 and will also be in breach of the Subaru Dealer Agreement. Any vehicles listed in any recall/campaign that are in retailer stock must be: • Immediately identified • Tagged or otherwise marked to prevent their delivery or use prior to repair • Repaired in accordance with the repair procedures outlined in the Product Campaign Bulletin Retailers are to promptly perform the applicable service procedures, to correct all affected vehicles in their inventory (used, demo & SSLP). Whenever a vehicle subject to this recall is taken into retailer inventory necessary steps should be taken to ensure the recall correction has been made before selling or releasing the vehicle. Service, Parts, and Claim Instructions For stop sale units affected by this recall, please refer to the lot number inspection procedure included at the end of this announcement. If an affected lot number is found during the inspection, the vehicle is to be held under the stop sale until remedy parts are available. Retailers will be advised when parts are available. Once parts are available, please refer to the WRP-23 Product Campaign Bulletin on STIS for detailed service, parts, and claim instructions. Owner Notification Subaru will notify affected vehicle owners by first class mail within 60 days. Retailers will be advised when owner notification is scheduled. STOP SALE UNITS: LOT NUMBER INSPECTION PROCEDURE PRIOR TO PARTS AVAILABILITY The vehicles included in this recall may be equipped with a front drive shaft assembly with an outer race (shown below) that could crack, due to improper cooling during the manufacturing process. Over time, a cracked outer race could break, potentially resulting in loss of motive power. Additionally, if the outer race breaks, the vehicle may roll when parked if the parking brake is not applied. Both conditions increase the risk of a crash. For stop sale vehicles only, Subaru retailers should inspect the front drive shaft lot numbers. If the affected lot number is found, the vehicle is to remain on HOLD under this stop sale until recall remedy parts are available. A future announcement will be made when parts are available. SERVICE PROCEDURE FLOWCHART: No (Vehicle is not affected) Yes (Vehicle is affected) Yes (Vehicle is affected) End End Is the VIN in the affected VIN list? Confirm the lot number engraving type. Confirm the lot number engraving type. Is 2 Is 2–digit number engraved in the axis direction?digit number engraved in the axis direction? The vehicle is to be placed on HOLD The vehicle is to be placed on HOLD under Stop Sale under further notice. under Stop Sale under further notice. Record the lot numbers on the repair order. Record the lot numbers on the repair order. Yes Yes Yes Yes No No No No Inspect if the lot number is either of the following 2-digit numbers. Is the number either “71”, “73”, or “75”? NTN NTN 7 733 LOT NUMBER INSPECTION PROCEDURE: STEP 1: Lift the vehicle according to the lift manufacturer’s instructions. STEP 2: Rotate the left/right front wheel to find the 2-Line engraving located on both the left and right outer race portions of the inner drive shaft joints. CAUTIONS: • There are three engraves on the drive shaft outer race. One is the lot number, and the others are NOT lot numbers. The lot number engraving is shown in the images below. • SLOWLY rotate the wheel to find the lot number. Remove and dust and/or dirt using a clean cloth to make the numbers more visible. A flashlight will also aid in the reading. STEP 3: Confirm the lot number engraving type and read the lot number. See the tables below for further detail. STEP 4: Do any of the drive shafts require replacement? YES: The vehicle should remain on HOLD under Stop Sale until remedy parts are available. No claim should be submitted until the affected driveshaft(s) are replaced. NO: The procedure is complete. Record the lot numbers and include them in the repair order notes, and submit an ‘RC’ claim for inspection only. SERVICE PROGRAM IDENTIFICATION LABEL: If the inspection shows that both the LH and RH front driveshaft lot numbers are OK, type or print the necessary information on a Campaign Identification Label. The completed label should be attached to the vehicle’s upper radiator support. Additional labels are available through normal parts ordering channels. The part number is MSA6P1302, which comes as one sheet of 20 labels. CLAIM REIMBURSEMENT AND ENTRY PROCEDURES: If the inspection shows that one or both of the front driveshafts contain an affected lot number (71, 73, or 75), the vehicle should remain on hold under this stop sale until remedy parts are available. DO NOT SUBMIT A CLAIM UNTIL THE AFFECTED DRIVESHAFT(S) ARE REPLACED. Further repair, parts, and claim instructions will be included in the WRP-23 Product Campaign Bulletin once remedy parts are available. If the inspection shows that both the LH and RH front driveshaft lot numbers are OK, credit to perform this recall will be based on properly completed repair order information. Retailers may submit claims through subarunet.com. Labor Description Labor Operation # Labor Time Fail Code INSPECTION ONLY OF DRIVESHAFTS (only if both the LH and RH driveshaft lot numbers are OK) A121-300 0.3 WRP-23 IMPORTANT REMINDERS: • SOA strongly discourages the printing and/or local storage of service information as previously released information and electronic publications may be updated at any time. • Always check for any open recalls or campaigns anytime a vehicle is in for servicing. • Always refer to STIS for the latest service information before performing any repairs. WRP-23

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Subarunet Announcement To: All Subaru Retailers From: Subaru of America, Inc. Date: November 16, 2023 UPDATE Safety Recall/STOP SALE: WRP-23 Driveshaft Failure Please be advised that the inspection procedures listed in this announcement may be used for affected SSLP units, in addition to the stop sale units affected by this recall, prior to parts availability. If an affected lot number is found, the vehicle is to remain on HOLD until recall remedy parts are available. Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2023 model year WRX vehicles, certain 2024 model year Crosstrek and Impreza vehicles, and certain 2023-2024 model year Forester vehicles. Description of the Defect and Safety Risk The vehicles included in this recall may be equipped with a front drive shaft assembly with an outer race that could crack, due to improper cooling during the manufacturing process. Over time, a cracked outer race could break, potentially resulting in loss of motive power. Additionally, if the outer race breaks, the vehicle may roll when parked if the parking brake is not applied. Both conditions increase the risk of a crash. Remedy For all potentially affected vehicles, Subaru dealers will inspect the left-hand and right-hand front drive shafts and where necessary, replace them with a new one at no cost to the customer. Affected Vehicles A total of 3,732 U.S. vehicles will be included in this recall as listed below. Not all vehicles in the production range listed below are affected by this recall. Coverage must be confirmed by using the Vehicle Coverage Inquiry function on subarunet.com prior to repair. This information will be available later today. Model Year Carline Production Date Range 2023 WRX 9/1/2023 – 9/13/2023 2024 Crosstrek 9/5/2023 – 9/13/2023 2024 Impreza 9/6/2023 – 9/7/2023 2023-2024 Forester 9/4/2023 – 9/14/2023 Please be advised that the parts supply for this recall is not yet available. Therefore, the WRP23 recall coverage status for the affected VINs will be ‘Open-Remedy not yet available’ until the parts are available. We expect parts to be available in December, at which time the VIN status will be updated to allow repairs to begin. Retailers will be notified when this update occurs. Retailer Responsibility Please be advised that it is a violation of Federal law for a dealer to deliver a new motor vehicle covered by a recall under a sale or lease until the defect is remedied. Therefore, any Authorized Subaru Retailer failing to perform the applicable service procedures to correct all affected vehicles in their inventory prior to the vehicle being placed in service may be subject to civil penalties of up to $26,315 per violation (i.e., for each vehicle), as provided in 49 CFR §578.6 and will also be in breach of the Subaru Dealer Agreement. Any vehicles listed in any recall/campaign that are in retailer stock must be: • Immediately identified • Tagged or otherwise marked to prevent their delivery or use prior to repair • Repaired in accordance with the repair procedures outlined in the Product Campaign Bulletin Retailers are to promptly perform the applicable service procedures, to correct all affected vehicles in their inventory (used, demo & SSLP). Whenever a vehicle subject to this recall is taken into retailer inventory necessary steps should be taken to ensure the recall correction has been made before selling or releasing the vehicle. Service, Parts, and Claim Instructions For stop sale and SSLP units affected by this recall, please refer to the lot number inspection procedure included at the end of this announcement. If an affected lot number is found during the inspection, the vehicle is to be held under the stop sale until remedy parts are available. Retailers will be advised when parts are available. Once parts are available, please refer to the WRP-23 Product Campaign Bulletin on STIS for detailed service, parts, and claim instructions. Owner Notification Subaru will notify affected vehicle owners by first class mail within 60 days. Retailers will be advised when owner notification is scheduled. STOP SALE & SSLP UNITS: LOT NUMBER INSPECTION PROCEDURE PRIOR TO PARTS AVAILABILITY The vehicles included in this recall may be equipped with a front drive shaft assembly with an outer race (shown below) that could crack, due to improper cooling during the manufacturing process. Over time, a cracked outer race could break, potentially resulting in loss of motive power. Additionally, if the outer race breaks, the vehicle may roll when parked if the parking brake is not applied. Both conditions increase the risk of a crash. For stop sale and SSLP vehicles only, Subaru retailers should inspect the front drive shaft lot numbers. If the affected lot number is found, the vehicle is to remain on HOLD under this stop sale until recall remedy parts are available. A future announcement will be made when parts are available. SERVICE PROCEDURE FLOWCHART: No (Vehicle is not affected) Yes (Vehicle is affected) Yes (Vehicle is affected) End End Is the VIN in the affected VIN list? Confirm the lot number engraving type. Confirm the lot number engraving type. Is 2 Is 2–digit number engraved in the axis direction?digit number engraved in the axis direction? The vehicle is to be placed on HOLD The vehicle is to be placed on HOLD under Stop Sale under further notice. under Stop Sale under further notice. Record the lot numbers on the repair order. Record the lot numbers on the repair order. Yes Yes Yes Yes No No No No Inspect if the lot number is either of the following 2-digit numbers. Is the number either “71”, “73”, or “75”? NTN NTN 7 733 LOT NUMBER INSPECTION PROCEDURE: STEP 1: Lift the vehicle according to the lift manufacturer’s instructions. STEP 2: Rotate the left/right front wheel to find the 2-Line engraving located on both the left and right outer race portions of the inner drive shaft joints. CAUTIONS: • There are three engraves on the drive shaft outer race. One is the lot number, and the others are NOT lot numbers. The lot number engraving is shown in the images below. • SLOWLY rotate the wheel to find the lot number. Remove and dust and/or dirt using a clean cloth to make the numbers more visible. A flashlight will also aid in the reading. STEP 3: Confirm the lot number engraving type and read the lot number. See the tables below for further detail. STEP 4: Do any of the drive shafts require replacement? YES: The vehicle should remain on HOLD under Stop Sale until remedy parts are available. No claim should be submitted until the affected driveshaft(s) are replaced. NO: The procedure is complete. Record the lot numbers and include them in the repair order notes, and submit an ‘RC’ claim for inspection only. SERVICE PROGRAM IDENTIFICATION LABEL: If the inspection shows that both the LH and RH front driveshaft lot numbers are OK, type or print the necessary information on a Campaign Identification Label. The completed label should be attached to the vehicle’s upper radiator support. Additional labels are available through normal parts ordering channels. The part number is MSA6P1302, which comes as one sheet of 20 labels. CLAIM REIMBURSEMENT AND ENTRY PROCEDURES: If the inspection shows that one or both of the front driveshafts contain an affected lot number (71, 73, or 75), the vehicle should remain on hold under this stop sale until remedy parts are available. DO NOT SUBMIT A CLAIM UNTIL THE AFFECTED DRIVESHAFT(S) ARE REPLACED. Further repair, parts, and claim instructions will be included in the WRP-23 Product Campaign Bulletin once remedy parts are available. If the inspection shows that both the LH and RH front driveshaft lot numbers are OK, credit to perform this recall will be based on properly completed repair order information. Retailers may submit claims through subarunet.com. Labor Description Labor Operation # Labor Time Fail Code INSPECTION ONLY OF DRIVESHAFTS (only if both the LH and RH driveshaft lot numbers are OK) A121-300 0.3 WRP-23 IMPORTANT REMINDERS: • SOA strongly discourages the printing and/or local storage of service information as previously released information and electronic publications may be updated at any time. • Always check for any open recalls or campaigns anytime a vehicle is in for servicing. • Always refer to STIS for the latest service information before performing any repairs. WRP-23

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