The 2002 Impreza 2.5L is fundamentally solid but plagued by predictable engine internal failures—head gaskets are the headline, but piston ringland cracks often follow if owners boost or overheat these engines. Transmission cooling issues compound the problem.
Head Gasket Failure (External Coolant Leaks)
Common · high severity
Typical onset: 80,000-150,000 mi
Symptoms: Coolant seeping from cylinder heads, visible white crusty residue at block/head junction, Slow coolant loss without visible drips on ground initially, Sweet coolant smell after engine heats up, Overheating if ignored long enough
Fix: Both heads off, resurface, new Subaru OEM gaskets (aftermarket fails quickly), timing belt/water pump while apart, thermostat, all coolant hoses. 12-16 labor hours depending on AC and accessibility.
Estimated cost: $1,800-2,800
Piston Ringland Failure (#4 Cylinder)
Occasional · high severity
Typical onset: 60,000-120,000 mi
Symptoms: Sudden misfire with CEL, often P0304 (cylinder 4 misfire), Rough idle, loss of power, Compression test shows 30-60 psi on #4 vs 150+ on others, White smoke or excessive blowby if ringlands completely detach
Fix: Short block replacement or full engine rebuild—piston ringlands crack, usually #4. If one fails, #2 often marginal. Used short blocks common, 18-24 hours removal/install, timing components, seals, gaskets. Inspect for scoring before reusing heads.
Estimated cost: $3,200-5,500
Transmission Oil Cooler Line Corrosion (Automatic)
Common · medium severity
Typical onset: 100,000+ mi or 15+ years regardless of miles
Symptoms: ATF dripping from radiator area or frame rails, Pink/red fluid pooling under engine bay passenger side, Transmission slipping or delayed engagement if fluid level drops, Coolant-contaminated ATF (strawberry milkshake) if internal cooler fails
Fix: Replace steel hardlines (they rust through at bends) or upgrade to rubber hose conversion. If internal radiator cooler leaks, flush trans immediately, replace radiator. 2-4 hours if just lines, 6-8 if trans flushing or R&R needed.
Estimated cost: $400-1,200
Front Lower Control Arm Rear Bushing Failure
Common · medium severity
Typical onset: 70,000-120,000 mi
Symptoms: Clunking over bumps from front suspension, Steering wanders, imprecise turn-in, Inner tire edge wear due to negative camber shift, Visible torn rubber or separated bushing on inspection
Fix: Replace lower control arms (bushings not serviced separately economically). Alignment required after. 2.5-3.5 hours both sides. Note: NHTSA recall covered some VINs—check eligibility first.
Estimated cost: $450-750
Rear Wheel Bearing Failure
Occasional · medium severity
Typical onset: 90,000-140,000 mi
Symptoms: Growling or humming from rear, increases with speed, ABS/traction lights if bearing disintegrates and sensor damaged, Wheel play when jacked—grab top/bottom and rock
Fix: Press out hub/bearing assembly, press in new unit—requires bearing press or hub tamer tool. 1.5-2 hours per side. Fronts can fail too but rears more common on this platform.
Estimated cost: $250-400 per side
Fuel Pump Failure (Sudden No-Start)
Occasional · high severity
Typical onset: 120,000-180,000 mi
Symptoms: Cranks but won't start, no fuel pressure at rail, Intermittent stalling when hot, restarts when cool, No audible pump prime when key turned to ON, NHTSA recall for some VINs—check service history
Fix: Drop fuel tank or remove rear seat and cut access panel (not factory). Replace pump assembly. 2-3 hours if access panel exists, 4-5 if tank drop required. Use OEM Subaru pump—aftermarket longevity poor.
Estimated cost: $450-850
Owner tips
Use Subaru OEM head gaskets and coolant conditioner if doing heads—this buys another 100k mi
Change ATF every 30k mi with Subaru HP fluid to extend auto trans life—these run hot
Inspect transmission cooler lines annually for surface rust; catch before they burst
Avoid aggressive tuning or boost on stock internals—ringlands cannot handle detonation
Buy if head gaskets already done with receipts and no mods; budget $3k-5k for engine work if they haven't—these motors self-destruct predictably but the chassis is robust.
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.
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SUSPENSION:FRONT:CONTROL ARM:LOWER ARM · 11V464000
2011-09-06 · PE11011
SUBARU IS RECALLING CERTAIN MODEL YEAR 2002-2007 IMPREZA, MODEL YEAR 2003-2008 FORESTER, AND MODEL YEAR 2005-2006 SAAB 9-2X VEHICLES MANUFACTURED FROM SEPTEMBER 5, 2000 THROUGH NOVEMBER 26, 2007 ORIGINALLY SOLD, OR CURRENTLY REGISTERED IN, MASSACHUSETTS, MARYLAND, MICHIGAN, NEW HAMPSHIRE, NEW YORK, PENNSYLVANIA, VERMONT, WISCONSIN, CONNECTICUT, DELAWARE, IOWA, ILLINOIS, INDIANA, MAINE, MINNESOTA, MISSOURI, NEW JERSEY, OHIO, RHODE ISLAND, WEST VIRGINIA AND THE DISTRICT OF COLUMBIA.
THE FRONT LOWER CONTROL ARMS MAY BREAK AT THE HANGER BRACKETS DUE TO CORROSION IF THE HANGER BRACKET IS EXPOSED TO SALTY AND HUMID ENVIRONMENTS SUCH AS ROADS CONTAINING SNOW MELTING AGENT.
Consequence: A BROKEN CONTROL ARM CAN RESULT IN THE LOSS OF CONTROL OF THE VEHICLE, INCREASING THE RISK OF A CRASH.
Remedy: SUBARU WILL HANDLE THEIR VEHICLES AND SAAB WILL HANDLE THEIRS. DEALERS WILL INSPECT THE DEGREE OF CORROSION OF THE FRONT LOWER CONTROL ARMS, AND WILL EITHER RUSTPROOF OR REPLACE THEM. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN DURING DECEMBER 2011. OWNERS MAY CONTACT SUBARU AT 1-800-782-2783. OWNERS MAY CONTACT SAAB AT 1-800-955-9007.
SUBARU IS RECALLING CERTAIN MODEL YEAR 2002 AND 2003 IMPREZA WRX VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF SOUTH DAKOTA, NEBRASKA, NORTH DAKOTA, MINNESOTA, IDAHO, IOWA, MONTANA, COLORADO, WISCONSIN, NEW YORK, WYOMING, MICHIGAN, ALASKA, NEW HAMPSHIRE, VERMONT, AND MAINE. DURING COLD STARTS, TYPICALLY UNDER EXTREMELY COLD TEMPERATURES, FUEL LEAKS IN THE FUEL DELIVERY LINE COULD OCCUR WHERE THE LINE CONNECTS WITH A RUBBER HOSE.
Consequence: FUEL LEAKS, IN THE PRESENCE OF AN IGNITION SOURCE, COULD RESULT IN A FIRE.
Remedy: DEALERS WILL REPLACE THE FUEL LINE FREE OF CHARGE. THE RECALL BEGAN ON DECEMBER 31, 2009. OWNERS MAY CONTACT SUBARU AT 1-800-782-2783.
LATCHES/LOCKS/LINKAGES:TAILGATE:LATCH · 08V135000
2008-03-24
SUBARU IS RECALLING 36,791 MY 2002-2003 IMPREZA WAGONS. THE STUD BOLT(S) OF REAR GATE STAY MAY HAVE BEEN TIGHTENED WITH INSUFFICIENT TIGHTENING TORQUE AND A GAP MAY HAVE RESULTED BETWEEN THE REAR GATE PANEL AND STUD BOLT BASE. AFTER REPEATED REAR GATE OPERATIONS (OPENING AND CLOSING), THE REAR GATE INNER PANEL AT THE WELDING NUT MAY BREAK, WHICH WILL LEAD TO DETACHMENT OF THE REAR GATE STAY, AND THE REAR GATE DROPPING DOWN.
Consequence: IN CASE SOMEONE IS UNDERNEATH OR NEAR THE REAR GATE, THERE IS A POSSIBILITY THAT A DROPPING REAR GATE PANEL MAY HIT THEM INCREASING THE RISK OF INJURIES.
Remedy: DEALERS WILL INSPECT TO SEE IF THERE IS ANY GAP AT THE STUD BOLT OF THE REAR GATE STAY INSTALLATION. IF A GAP IS FOUND, THE STUD BOLT WILL BE REMOVED TO CHECK FOR DAMAGE TO THE WELDING NUT. IF THE WELD NUT IS CRACKED, THE REAR GATE STAY WILL BE REPLACED FREE OF CHARGE. THE RECALL BEGAN ON JUNE 2, 2008. OWNERS MAY CONTACT SUBARU AT 1-800-782-2783.
SEATS · 04V342000
2004-07-14
ON CERTAIN SEDAN AND WAGON MODEL VEHICLES, THE LEFT FRONT BOLT THAT RETAINS THE FORWARD PART OF THE DRIVER'S SEAT TO THE SEAT SLIDE RAIL MAY LOOSEN. IF THE SEAT SLIDE RAIL BOLT LOOSENS, IT WILL EVENTUALLY FALL OUT, AND THE SEAT MAY SEPARATE FROM THE SEAT SLIDE.
Consequence: IN THE EVENT OF A CRASH, THE DRIVER MAY SUSTAIN MORE SEVERE INJURIES DUE TO THE SEAT MOVEMENT.
Remedy: DEALERS WILL INSTALL A NEW LEFT HAND DRIVER'S SEAT RAIL MOUNTING BOLT. THE RECALL BEGAN ON AUGUST 20, 2004. OWNERS SHOULD CONTACT SUBARU AT 1-800-782-2783.
VEHICLE SPEED CONTROL:CABLES · 04V128000
2004-03-16
ON CERTAIN PASSENGER SEDANS, WAGONS, AND SPORT UTILITY VEHICLES, THE CRUISE CONTROL CABLE COULD COME OUT OF ITS TRACK ON THE CRUISE CONTROL LEVER AND LODGE ON THE CONTROL LEVER TAB WHEN THE ACCELERATOR PEDAL IS RELEASED. IF THIS CONDITION OCCURS, THE THROTTLE WILL NOT RETURN TO THE IDLE POSITION AND WILL REMAIN IN AN OPEN POSITION.
Consequence: IF THIS OCCURS DURING VEHICLE OPERATION, THE DRIVER COULD LOSE CONTROL OF THE VEHICLE, WHICH COULD RESULT IN A CRASH.
Remedy: DEALERS WILL INSTALL A CRUISE CONTROL CABLE RETAINING CLIP TO THE CRUISE CONTROL LEVER TAB ON THE THROTTLE SHAFT IN ORDER TO PREVENT THE CRUISE CONTROL CABLE FROM COMING OUT OF ITS TRACK. OWNER NOTIFICATION BEGAN ON APRIL 12, 2004. OWNERS SHOULD CONTACT SUBARU AT 1-800-782-2783.
POWER TRAIN:AUTOMATIC TRANSMISSION · 02V282000
2002-10-30
CERTAIN SPORT UTILITY AND PASSENGER VEHICLES EQUIPPED WITH AUTOMATIC TRANSMISSIONS WERE PRODUCED WITH AN IMPROPERLY MANUFACTURED TRANSMISSION PARKING ROD. WHEN THE TRANSMISSION SELECTOR LEVER IS PLACED IN THE "P" (PARK) POSITION, THE TRANSMISSION PARK MECHANISM, THAT IS INTENDED TO HOLD YOUR VEHICLE, MAY NOT ENGAGE.
Consequence: THE VEHICLE COULD THEN MOVE/ROLL WITHOUT PRIOR WARNING, INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REPLACE THE AUTOMATIC TRANSMISSION PARKING ROD ASSEMBLY. OWNER NOTIFICATION JANUARY 8, 2003. AN INTERIM OWNER NOTIFICATION WILL BE SENT DURING NOVEMBER 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT SUBARU AT 1-800-782-2783.
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