The 2013-2020 Outback with the 2.5L H4 (FB25) is a solid platform, but the CVT transmission and head gasket issues inherited from earlier generations remain the Achilles' heel. Most failures cluster around 80,000-150,000 miles if maintenance lapses.
CVT Transmission Judder and Premature Failure
Common · high severityTypical onset: 60,000-120,000 mi
Symptoms: Shuddering or hesitation during acceleration, especially 15-30 mph, Whining or grinding noise from transmission, Delayed engagement into drive or reverse, Check engine light with P0700, P0845, or torque converter codes
Fix: CVT fluid and filter service can temporarily help if caught early (3 hours labor), but most need valve body replacement (8-10 hours) or complete CVT replacement (12-14 hours). Subaru extended warranty to 10yr/100k on some VINs; check eligibility before paying out of pocket.
Estimated cost: $4,500-8,500
Head Gasket Oil Leaks (External)
Occasional · medium severityTypical onset: 80,000-150,000 mi
Symptoms: Oil seepage visible at head/block mating surface, especially passenger side, Burning oil smell after hot shutdown, Gradual oil consumption between changes (quart per 1,000-2,000 mi), No coolant mixing (external leak, not internal failure like older EJ engines)
Fix: Requires heads-off service: head gaskets, valve cover gaskets, timing components while you're in there. Budget 16-20 hours labor. The FB25 rarely blows head gaskets catastrophically like the EJ25, but external seepage is common and annoying.
Estimated cost: $2,500-4,000
Excessive Oil Consumption (Piston Ring / Cylinder Scoring)
Common · high severityTypical onset: 50,000-100,000 mi
Symptoms: Burning 1+ quart of oil every 1,000-2,000 miles, Blue smoke on startup or acceleration, Low oil pressure warning if neglected, No external leaks visible
Fix: Early FB25 engines (2013-2014 especially) had defective piston rings. Subaru issued recalls and extended warranties, but many are out of coverage now. Fix requires short block replacement or full engine rebuild (18-24 hours). Some owners band-aid with frequent top-offs, but risk catastrophic failure.
Estimated cost: $5,000-9,000
Transmission Oil Cooler Line Leaks
Common · medium severityTypical onset: 70,000-120,000 mi
Symptoms: Red fluid puddle under front of vehicle, Burnt transmission smell, Low CVT fluid warning or slipping behavior, Corrosion visible on cooler lines at radiator connection
Fix: Steel lines rust through where they connect to the external cooler. Replace both lines and flush/refill CVT fluid. 3-4 hours labor. Catch it early before CVT runs low and damages internals.
Estimated cost: $600-1,200
Rear Transmission Mount Failure
Occasional · low severityTypical onset: 60,000-100,000 mi
Symptoms: Clunk when shifting from park to drive/reverse, Vibration at idle, especially with AC on, Excessive engine/trans movement visible when revving in park
Fix: Rubber transmission mount tears or sags. Replace mount and possibly pitch stopper. 2-3 hours labor. Not dangerous, but annoying and can stress other drivetrain components if ignored.
Estimated cost: $400-700
Front Wheel Bearing Failures
Occasional · medium severityTypical onset: 80,000-140,000 mi
Symptoms: Humming or grinding noise that increases with speed, Noise changes pitch in turns (louder when turning opposite the bad bearing), ABS/traction control lights may illuminate if sensor damaged
Fix: Replace wheel hub assembly. 2-3 hours per side. These fail more frequently than competitors' bearings, likely due to AWD load and CV axle angle stress. OEM or quality aftermarket only — cheap bearings fail in 10,000 miles.
Estimated cost: $400-700 per side
Takata Airbag Inflator Recall (Ongoing)
Common · high severitySymptoms: Recall notice received by mail, No symptoms until airbag deploys and inflator explodes
Fix: Multiple waves of Takata recalls affect passenger and driver airbags. Parts availability has been spotty. Check NHTSA recall database by VIN and get it done at dealer (free). This is a safety-critical recall — shrapnel risk is real.
Estimated cost: $0 (recall)
Buy a 2016+ with documented CVT fluid changes and confirmed oil consumption within spec (Subaru says 1 qt/1,200 mi is 'normal' but that's excessive). Avoid 2013-2014 unless engine has been replaced.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.