2020 SUBARU WRX

Typical onset: 30,000-80,000 mi

Symptoms: metallic knock or rattle under load, misfire codes P0301-P0304, loss of power, white or blue smoke from exhaust

Fix: Ringland failure or spun bearing typically requires short block replacement or full rebuild. Stock tune cars rarely see this, but aftermarket tunes with aggressive timing, low-octane fuel, or heavy boost spike risk are common culprits. Expect 20-30 labor hours for short block swap, more for full teardown and inspection.

Estimated cost: $5,000-9,000

Typical onset: 40,000-80,000 mi

Symptoms: transmission fluid puddle under car, burnt smell, low fluid warning, slipping or shuddering in CVT

Fix: Cooler line fittings crack or corrode at connections. Replace lines and top off CVT fluid. Some shops also recommend flushing if contamination occurred. 2-3 hours labor.

Estimated cost: $400-700

Typical onset: 50,000-90,000 mi

Symptoms: clunk when shifting from Park to Drive or Reverse, excessive vibration at idle, transmission feels loose during acceleration

Fix: Rear transmission mount rubber deteriorates. Replace mount assembly. 1.5-2 hours labor.

Estimated cost: $250-450

Typical onset: 60,000-100,000 mi

Symptoms: metallic rattle on cold start that goes away when warm, rattle between 2,000-3,000 RPM under light load, no loss of boost or power

Fix: Internal wastegate actuator arm develops play. Turbo still functions fine but noise is annoying. Some live with it; fix requires turbo removal and replacement or rebuild. 6-8 hours labor if replacing turbo.

Estimated cost: $1,200-2,200

Typical onset: 40,000-70,000 mi

Symptoms: chirping or squealing when clutch pedal is depressed, noise disappears when pedal released, clutch still engages normally

Fix: Throw-out bearing wears prematurely on some units. Requires transmission removal to replace. Smart move is to do clutch, pressure plate, and flywheel resurface at same time since trans is already out. 8-10 hours labor total.

Estimated cost: $1,500-2,500

Typical onset: 80,000-120,000 mi

Symptoms: slight coolant smell after hard driving, very minor weeping at head gasket seam, no overheating or mixing of fluids

Fix: FA20 does not have the classic EJ head gasket failure, but some develop minor external seepage. If caught early and no other damage, replace gaskets, resurface heads if needed. 12-16 hours labor for both sides.

Estimated cost: $2,000-3,500

Typical onset: 60,000-100,000 mi

Symptoms: rough idle, hesitation on acceleration, slight loss of power, occasional misfire codes

Fix: Direct injection means no fuel washing intake valves. Carbon accumulates. Walnut blasting intake valves restores performance. 3-4 hours labor.

Estimated cost: $400-700