2015 TOYOTA SCION FR-S

Typical onset: 60,000-90,000 mi

Symptoms: Sudden loss of power and metallic rattling at high RPM, Misfires that don't resolve with spark plug replacement, Metal fragments in oil during changes, Check engine light with cylinder-specific misfire codes

Fix: Valve spring breaks, valve drops into cylinder, pistons/rods get destroyed. Requires full short block or complete engine replacement. 18-24 labor hours for engine swap, often uneconomical on higher-mileage examples. TSB issued but no recall—owners eat the cost.

Estimated cost: $6,000-9,500

Symptoms: Oil pressure warning light flickers during track days or aggressive canyon runs, Bearing knock develops after spirited driving sessions, Spun rod bearings discovered during oil changes showing bearing material in filter

Fix: Factory oil pan design allows oil to slosh away from pickup during sustained lateral G-forces. Spinning a bearing means full bottom-end rebuild: rod bearings, crank polish, possibly pistons if debris circulated. 16-22 hours labor. Preventive fix is aftermarket baffled oil pan ($400 part, 3 hours) or overfilling oil 0.5 qt—both Band-Aids.

Estimated cost: $4,500-7,000

Typical onset: 70,000-110,000 mi

Symptoms: Gear oil weeping from bell housing onto clutch, Clutch slipping due to contamination despite adequate friction material remaining, Drips under car after overnight parking

Fix: Aisin 6-speed manual has weak front seal. Requires transmission removal to replace seal and often input shaft bearing while you're in there. 8-10 hours labor. If clutch is contaminated, add clutch replacement (total 10-12 hours). Many shops bundle the work.

Estimated cost: $1,800-3,200

Typical onset: 50,000-80,000 mi

Symptoms: Grinding or squealing when clutch pedal is depressed, Clutch pedal stays on floor or feels spongy with no hydraulic leak found, Difficulty shifting into gear even with pedal fully depressed

Fix: Plastic clutch fork pivot ball cracks or throwout bearing seizes. Transmission-out job: 7-9 hours labor. Replace throwout bearing, clutch fork, and pivot. Smart shops replace clutch assembly at same time since labor is already done—adds $600-800 in parts, 1 hour labor.

Estimated cost: $1,400-2,800

Typical onset: 80,000-120,000 mi

Symptoms: Rough idle when cold, smooths out after warmup, Hesitation or stumble during acceleration from low RPM, Gradual loss of power and fuel economy over time

Fix: No port injection to wash valves means carbon accumulates. Walnut-blasting the intake valves restores performance. 4-6 hours labor to remove intake manifold and blast all eight valves. Some shops use chemical sprays but walnut blasting is superior and lasts longer.

Estimated cost: $500-900

Typical onset: 60,000-100,000 mi

Symptoms: Excessive shifter movement or vague gates, especially 2nd-3rd shift, Clunking from transmission tunnel during hard acceleration or deceleration, Visible torn rubber on transmission mount during inspection

Fix: Factory transmission mount uses soft rubber that fails early, especially with spirited driving. Easy DIY: 1.5-2 hours labor for shops. Upgraded polyurethane mounts available and recommended to avoid repeat failure. Does not require transmission drop.

Estimated cost: $250-450

Typical onset: 90,000-130,000 mi

Symptoms: Intermittent no-start conditions, cranks but won't fire, Hesitation or stumbling under hard acceleration, Fuel pressure below spec during diagnosis (less than 2,500 psi at idle)

Fix: High-pressure direct injection pump fails—usually the Denso unit. Requires fuel system depressurization, pump replacement bolted to cylinder head. 3-4 hours labor. Part is $600-900 OEM. Aftermarket options exist but quality varies.

Estimated cost: $1,000-1,500