2008 SUBARU LEGACY GT

Typical onset: 80,000-130,000 mi

Symptoms: Coolant seepage visible at block/head joint on outside of engine, Slight coolant smell after hot shutdown, Gradual coolant loss with no visible leaks underneath, White crusty residue on engine block sides

Fix: Classic EJ-series issue. Requires engine-out or partial pull for access. 12-16 labor hours depending on shop method. Must resurface heads if warped, replace timing components while apart, new head bolts mandatory. Turbo models slightly easier access than non-turbo due to top-mount intercooler removal.

Estimated cost: $2,200-3,800

Typical onset: 100,000-150,000 mi

Symptoms: Blue smoke on acceleration or deceleration, Loud whistle or grinding noise from engine bay, Loss of boost pressure, Check engine light with underboost codes P0243/P0299, Oil consumption increase

Fix: TD04 turbo common on these. Shaft play past 0.003" means replacement. Can rebuild for $800-1,200 or replace with new/reman for $1,400-2,000. Add 6-8 hours labor for removal, gaskets, oil feed/return lines. MUST change oil and inspect for metal shavings if turbo grenaded to prevent engine damage.

Estimated cost: $1,800-3,200

Typical onset: 60,000-120,000 mi

Symptoms: Turbo whine or whistle that wasn't there before, Loss of power under boost, Smoke from exhaust (if turbo already damaged), No immediate symptoms until catastrophic turbo failure

Fix: The infamous banjo bolt with internal screen filter on turbo oil feed line clogs with debris, starving turbo of oil. Preventive: remove banjo bolts every 30k mi and clean screens, or install aftermarket banjo bolts without screens and use quality oil/filters religiously. If you buy used and this wasn't done, budget for turbo replacement. Takes 0.5 hours to inspect/clean banjos if caught early.

Estimated cost: $50-150 preventive; $1,800-3,200 if turbo damage results

Typical onset: 70,000-110,000 mi

Symptoms: Clunk when shifting from reverse to drive or vice versa, Excessive engine movement visible when revving in park, Vibration through shifter at idle, Transmission tunnel heat increase

Fix: Rear transmission mount (pitch stop mount) tears, allowing drivetrain to rock excessively. Easy DIY, 1-1.5 hours with basic tools and jack stands. OEM or upgraded aftermarket bushings available. While under there, inspect front engine mounts too—they're next to go.

Estimated cost: $150-350

Typical onset: 105,000 mi service interval

Symptoms: No symptoms until failure, Catastrophic engine damage if belt breaks (interference engine)

Fix: Interference engine—if belt snaps, valves meet pistons and you're looking at full rebuild. Factory interval 105k mi but do it at 90k-100k if prior history unknown. 6-8 hour job, includes belt, tensioner, idlers, water pump, cam and crank seals. Non-negotiable maintenance, not optional.

Estimated cost: $1,200-1,800

Typical onset: 80,000-140,000 mi

Symptoms: Check engine light with P0011/P0021 cam timing codes, Rough idle especially when cold, Hesitation on acceleration, Ticking noise from valve covers at startup

Fix: Oil control solenoids for AVCS gum up from oil sludge or fail electrically. Easy access on valve covers, 1-2 hours to replace both solenoids. If codes persist, cam sensors ($80 each) or actual AVCS gear issues inside engine (rare, requires head removal). Use quality oil and change every 3,750 mi to prevent.

Estimated cost: $300-600

Typical onset: 90,000-150,000 mi

Symptoms: Grinding or humming noise that increases with speed, Noise changes with turning (louder on turns if front bearing), Vibration through steering wheel or seat, ABS/VDC warning lights if bearing has failed enough to affect sensor

Fix: AWD system puts extra stress on bearings. Rears slightly more common than fronts on this chassis. 2-3 hours per corner, hub assembly replacement. Don't limp along—failed bearing can lock up or separate, causing loss of control.

Estimated cost: $400-700 per wheel