The 2024 Legacy XT uses Subaru's FA24 turbocharged boxer engine paired with a CVT. While newer than previous generations, early patterns show CVT cooling system vulnerabilities and familiar Subaru boxer issues appearing prematurely in some units.
CVT Transmission Oil Cooler Failure
Occasional · high severityTypical onset: 40,000-80,000 mi
Symptoms: CVT overheating warnings on dash, Transmission slipping or juddering under load, Milky or contaminated CVT fluid, Coolant mixing with transmission fluid
Fix: Replace external oil cooler and flush both cooling system and CVT. Sometimes requires CVT replacement if contamination occurred. 4-6 hours labor for cooler alone, 12-15 hours if CVT needs replacement.
Estimated cost: $1,200-$8,500
Premature Head Gasket Failure (FA24 Turbo)
Rare · high severityTypical onset: 50,000-90,000 mi
Symptoms: External oil seepage at head-to-block mating surface, White smoke from exhaust on cold start, Coolant consumption without visible leaks, Rough idle after engine sits
Fix: Head gasket replacement on both banks, machine work if heads are warped. Turbo models run hotter and see failures earlier than N/A versions. 18-22 hours labor, often includes timing components as preventive maintenance.
Estimated cost: $3,500-$5,500
Piston Ring Land Failure / Ringland Cracks
Rare · high severityTypical onset: 60,000-100,000 mi
Symptoms: Excessive oil consumption (1 qt per 1,000 mi or worse), Misfires under boost, Loss of compression on one cylinder, Blue smoke under acceleration
Fix: Requires short block replacement or complete engine rebuild. Common on cylinder #4. If caught early, sometimes single piston replacement works, but full rebuild recommended. 20-30 hours labor.
Estimated cost: $6,000-$12,000
Transmission Mount Deterioration
Common · low severityTypical onset: 50,000-80,000 mi
Symptoms: Clunking when shifting from Park to Drive, Excessive vibration at idle, Lurching on acceleration, Visible sagging of transmission when inspected on lift
Fix: Replace rear transmission mount and sometimes pitch stop mount. Hydraulic mounts wear faster on turbo models due to increased torque. 1.5-2.5 hours labor.
Estimated cost: $350-$650
Fuel Filter / Low-Pressure Fuel Pump Issues
Occasional · medium severityTypical onset: 70,000-110,000 mi
Symptoms: Hard starting after sitting, Hesitation or stumble during acceleration, Check engine light with fuel trim codes, Fuel pump whine audible from rear seat area
Fix: In-tank fuel pump assembly replacement. Filter is integrated into pump module on this platform. 2-3 hours labor, requires dropping tank or removing rear seat access panel.
Estimated cost: $800-$1,400
Crankshaft Position Sensor / Main Bearing Wear (High-Mileage)
Rare · high severityTypical onset: 120,000-180,000 mi
Symptoms: Intermittent no-start condition, Metallic knocking from bottom end, Low oil pressure at idle when hot, Check engine light with crank sensor circuit codes
Fix: If main bearings are worn, requires engine removal and complete lower-end rebuild or short block replacement. Sensor-only issues are 1-2 hours, but bearing wear means 25+ hours labor for proper repair.
Estimated cost: $400-$9,000
Wait another 3-5 years for long-term reliability data to shake out—early failures on FA24 turbo motors are concerning, and CVT longevity remains questionable despite improvements.
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.