Subaru Ascent Problems: 4 Issues Every Owner Should Know
2019-2025 model years · Based on 3,820+ owner reports · Last updated March 2026
According to Au7o's analysis of 3,820+ owner reports, the 2019-2025 Subaru Ascent has 4 documented known issues, with 2 rated critical by the Au7o research team. The most serious are CVT Transmission Hesitation and Harsh Engagement ($0-$9,000 repair) and Fuel Pump Impeller Failure - Recall WRK-22 / NHTSA 20V-701 ($0-$0 repair). The most commonly reported issue is CVT Transmission Hesitation and Harsh Engagement with 1,300 owner reports. Across all issues, repair costs range from $0 to $9,000. Full technical analysis and DIY maintenance guides at au7o.io.
All 4 Known Issues
The Ascent's high-torque Lineartronic CVT (TR730 - the largest CVT Subaru has produced) paired with the 2.4L turbo FA24 engine exhibits hesitation from stops, harsh engagement when shifting from Park to Drive/Reverse, and surging at low speeds. The TR730 CVT must handle significantly more torque than Subaru's other CVTs, leading to durability concerns. Multiple TSBs have addressed calibration issues. Some owners report complete CVT failure under 60,000 miles.
Common Symptoms
- 1-2 second hesitation when accelerating from a stop
- Harsh thunk when shifting from Park to Drive or Reverse
- Surging or bucking at low speeds in parking lots
- Shuddering during light acceleration at 25-40 mph
- Transmission warning light
- Burning smell from transmission area
How to Fix
Have dealer apply latest TCM software calibration (multiple TSBs released). Perform CVT fluid drain and refill with Subaru High Torque CVT Fluid (SOA427V1660) - note this is different from the standard CVT fluid. If hesitation persists after software update, valve body replacement may be needed. For complete failure, Subaru reman CVT is available. All Ascents have 10-year/100,000-mile CVT warranty from factory.
What Owners Are Using
Parts and tips from 1,300+ owners who fixed this issue
- Tip
- Tip
Certain 2019-2021 Ascents are affected by a fuel pump recall (WRK-22, NHTSA 20V-701) where the low-pressure fuel pump impeller can deform due to excessive absorption of fuel components, particularly in regions with higher-concentration ethanol fuels. A deformed impeller reduces fuel delivery, causing engine stalling, rough running, or inability to start. This is a safety concern as stalling can occur without warning during driving. The recall was coordinated across multiple manufacturers using the same Denso fuel pump.
Common Symptoms
- Engine stalling without warning while driving
- Rough idle or engine misfires
- Extended cranking before engine starts
- Loss of power during acceleration
- Check engine light with fuel system codes
- Vehicle fails to start
How to Fix
Check recall status by VIN at subaru.com/owners/recalls or NHTSA.gov. Recall WRK-22 (NHTSA 20V-701) provides free fuel pump replacement at any Subaru dealer. The updated pump uses a revised impeller material resistant to fuel component absorption. If you experience stalling before recall repair, avoid situations where a stall could be dangerous.
What Owners Are Using
Parts and tips from 650+ owners who fixed this issue
- Tip
- Tip
The Ascent has one of the highest rates of windshield cracking complaints of any Subaru model. Cracks frequently originate near the EyeSight camera housing or from windshield edges without any rock impact. The large windshield, acoustic lamination, steep rake angle, and EyeSight system create stress points. Temperature fluctuations (cold nights followed by morning defrost) are a common trigger. Replacement windshields must be EyeSight-compatible and require camera recalibration ($200-400 additional). Some owners have reported 3-4 windshield replacements.
Common Symptoms
- Crack appearing near EyeSight camera area without impact
- Edge crack spreading across windshield rapidly
- Crack developing overnight during temperature swings
- EyeSight system shutting down due to windshield crack
- Multiple windshield replacements needed
How to Fix
Contact Subaru of America customer service (1-800-782-2783) to request goodwill windshield replacement. Document crack origin with photos before it spreads. Use an EyeSight-compatible replacement windshield (Subaru OEM 65009XC04A or Pilkington-branded EyeSight glass). EyeSight recalibration at dealer is mandatory after replacement ($200-400). Some insurance policies cover windshield replacement with zero deductible.
What Owners Are Using
Parts and tips from 980+ owners who fixed this issue
- Tip
- Tip
Ascents commonly experience dead batteries after sitting for 3-5 days without driving. The numerous electronic modules (Starlink telematics, EyeSight, keyless access, remote start receiver) create a high parasitic draw that depletes the battery when the vehicle is not driven regularly. The factory battery (Group 25, 570 CCA) is undersized for the electrical demands. Cold weather significantly worsens the issue. Subaru released TSB 11-193-20 to update module sleep behavior but the issue persists for many owners.
Common Symptoms
- Dead battery after sitting 3-5 days
- Slow engine cranking
- Electrical accessories not functioning when starting
- Key fob not detected by push-button start
- Clock and radio presets resetting
- Battery warning light after short drives
How to Fix
Install a higher-capacity battery (Group 25 with 640+ CCA - Interstate MTP-25 or Optima 8025-160 recommended). Have dealer apply TSB 11-193-20 module sleep timer update. If vehicle sits frequently, use a Battery Tender Junior (1.25A) connected to maintain charge. Check parasitic draw with multimeter - should be under 50mA after all modules sleep (30+ minutes). Disable Starlink telematics if not using connected services.
What Owners Are Using
Parts and tips from 890+ owners who fixed this issue
- Tip
- Tip
Frequently Asked Questions
What are the most common Subaru Ascent problems?
According to Au7o's analysis of 3,820+ owner reports, the 2019-2025 Subaru Ascent has 4 documented issues. The most frequently reported are: CVT Transmission Hesitation and Harsh Engagement, Fuel Pump Impeller Failure - Recall WRK-22 / NHTSA 20V-701, Windshield Spontaneous Cracking. Of these, 2 are rated critical and should be addressed promptly.
Is the Subaru Ascent reliable?
The 2019-2025 Subaru Ascent has 4 known issues documented across 3,820+ owner reports. 2 issues are rated critical: CVT Transmission Hesitation and Harsh Engagement and Fuel Pump Impeller Failure - Recall WRK-22 / NHTSA 20V-701. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Subaru Ascent problems?
Repair costs for known Subaru Ascent issues range from $0 to $9,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, CVT Transmission Hesitation and Harsh Engagement, typically costs $0-$9,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What year Subaru Ascent is the most reliable?
Reliability varies across model years of the Subaru Ascent. Based on owner reports, issues are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2019-2025 Subaru Ascent with 4 documented issues from 3,820+ owner reports.
Get DIY Repair Guides for Your Subaru Ascent
AI-powered step-by-step repair and maintenance guides tailored to your exact vehicle. Enter your year, make, and model to get started.
Get Started Free