The 2011 WRX STI with the EJ257 is a high-strung performance machine that rewards spirited driving but punishes abuse and deferred maintenance. These engines are notorious for ringland failure and head gasket issues, while the drivetrain sees significant wear from track use and aggressive launches.
Ringland Failure (Piston #4)
Common · high severity
Typical onset: 60,000-100,000 mi
Symptoms: Misfires on cylinder 4, Loss of compression, White or blue smoke on cold start, Check engine light with P0304 code, Rattling or knocking from engine
Fix: Requires complete engine teardown or short block replacement. The #4 piston ringland cracks due to detonation, lean conditions, or sustained high boost. Most shops recommend full rebuild with forged pistons if you're opening it up. Expect 25-35 hours labor for proper rebuild including machine work.
Estimated cost: $6,000-10,000
Head Gasket Failure
Common · high severity
Typical onset: 80,000-120,000 mi
Symptoms: External oil seepage near head mating surface, Coolant consumption without visible leaks, White smoke from exhaust, Overheating or fluctuating temps, Bubbles in coolant reservoir
Fix: Classic EJ257 issue requiring head removal, resurfacing, and gasket replacement. Do both sides simultaneously with OEM or multi-layer steel gaskets. While heads are off, inspect for cracks and replace timing components. 18-22 hours labor depending on shop experience with Subarus.
Estimated cost: $2,800-4,500
Turbo Failure
Occasional · high severity
Typical onset: 90,000-140,000 mi
Symptoms: Whining or whistling under boost, Blue smoke on acceleration, Loss of boost pressure, Oil consumption increase, Shaft play in turbine
Fix: The IHI VF48 turbo fails from oil starvation (often due to banjo bolt filter clogging), contamination from engine failure, or bearing wear. Replacement requires removing the entire intake manifold and upper engine components. OEM replacement is 12-15 hours; upgraded aftermarket turbo adds complexity. Always inspect oil feed/return lines and clean banjo bolt screens.
Estimated cost: $2,200-4,000
Transmission Synchro Wear (2nd and 3rd Gear)
Common · medium severity
Typical onset: 70,000-110,000 mi
Symptoms: Grinding into 2nd or 3rd gear, Difficulty downshifting, Notchy shift feel when cold, Popping out of gear under load
Fix: The 6-speed manual develops synchro wear from aggressive shifting and clutch dumps. Requires transmission removal and rebuild with new synchros, shift forks if damaged, and bearings. Some opt for upgraded carbon synchros during rebuild. 14-18 hours labor plus trans rebuild time at specialist.
Estimated cost: $2,500-4,200
Banjo Bolt Filter Clogging
Occasional · high severity
Symptoms: Turbo failure, Engine knock or rattle, Low oil pressure warning, Metal shavings in oil
Fix: The tiny mesh screens in turbo oil feed banjo bolts trap debris and restrict flow, starving the turbo bearings. Often discovered during turbo replacement. Prevention involves removing screens during oil changes or using aftermarket banjo bolts without screens. 1-2 hours if caught early.
Estimated cost: $150-300
Engine Oil Consumption
Common · medium severity
Typical onset: 50,000+ mi
Symptoms: Burning 1+ quart between oil changes, Blue smoke on deceleration, Fouled spark plugs, Low oil pressure at idle when hot
Fix: EJ257 engines consume oil due to worn piston rings, valve seals, or turbo seals. Some consumption (1 qt per 1,200 mi) was considered 'normal' by Subaru. If excessive, requires engine teardown to replace rings or rebuild. Short-term fix is frequent oil top-offs with quality 5W-30 synthetic. Full fix is engine rebuild.
Estimated cost: $4,500-8,000
Transmission Mount Failure
Common · low severity
Typical onset: 60,000-90,000 mi
Symptoms: Excessive drivetrain clunk on shifts, Vibration through cabin, Shifter feels loose or imprecise, Visible separation or tearing of rubber mount
Fix: The rear transmission mount tears from hard launches and shifts. Relatively easy fix requiring trans support and mount replacement. Many upgrade to stiffer aftermarket mounts at this point. 1.5-2.5 hours labor.
Estimated cost: $250-500
Owner tips
Run quality 5W-30 synthetic oil and change every 3,000-4,000 miles religiously — these engines are oil-sensitive
Remove banjo bolt filter screens or upgrade to filterless bolts to prevent turbo starvation
Install an aftermarket oil pressure gauge to catch bearing issues early
Replace timing belt at 60,000 mi regardless of book interval — interference engine means valve-to-piston contact if it fails
Let engine fully warm before boost; cold oil doesn't protect turbo bearings
Check for service history showing proactive maintenance — these aren't set-it-and-forget-it cars
Only buy if maintenance records are immaculate and you have $3,000-5,000 set aside for inevitable engine work — amazing driver's car, but the EJ257 is a ticking time bomb without religious care.
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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AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 20V001000
2020-01-02 · EA15001
Subaru of America, Inc. (Subaru) is recalling certain 2009-2013 Forester, 2003-2006 Baja, 2004-2011 Impreza, 2004-2014 WRX (STI included), 2003-2014 Legacy and Outback, and 2005-2006 Saab 9-2X vehicles originally sold, or ever registered, in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A."
These vehicles had their passenger frontal air bag inflators previously replaced under a prior recall using inflators of the same design. The inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
Remedy: Subaru will notify their owners. General Motors will notify Saab owners. Dealers will replace the passenger air bag inflators with alternate inflators, free of charge. The recall began January 7, 2020. Subaru Owners may contact Subaru customer service at 1-844-373-6614. Saab owners may contact the Saab Customer Assistance Center at 1-800-955-9007. Subaru's number for this recall is TKA-20.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 20V002000
2020-01-02 · EA15001
Subaru of America, Inc. (Subaru) is recalling certain 2009-2013 Forester, 2003-2006 Baja, 2004-2011 Impreza, 2004-2014 WRX (including STI), 2003-2014 Legacy and Outback, and 2006 Saab 9-2X vehicles originally sold, or ever registered, in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B."
These vehicles had their passenger frontal air bag inflators previously replaced under a prior recall using inflators of the same design. The inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
Remedy: Subaru will notify their owners. General Motors will notify Saab owners. Dealers will replace the passenger air bag inflators, free of charge. The recall began January 7, 2020. Subaru owners may contact Subaru customer service at 1-844-373-6614. Saab owners may contact the Saab Customer Assistance Center at 1-800-955-9007. Subaru's number for this recall is TKB-20.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 20V003000
2020-01-02 · EA15001
Subaru of America, Inc. (Subaru) is recalling certain 2009-2013 Forester, 2003-2006 Baja, 2004-2011 Impreza, 2004-2014 WRX (including STI), 2003-2014 Legacy and Outback, and 2005-2006 Saab 9-2X vehicles originally sold, or ever registered, in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C."
These vehicles had their passenger frontal air bag inflators previously replaced under a prior recall using inflators of the same design. The inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.
Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
Remedy: Subaru will notify their owners. General Motors will notify Saab owners. Dealers will replace the passenger air bag inflators, free of charge. The recall began January 7, 2020. Subaru owners may contact Subaru customer service at 1-844-373-6614. Saab owners may contact the Saab Customer Assistance Center at 1-800-955-9007. Subaru's number for this recall is TKC-20.
ELECTRICAL SYSTEM:IGNITION:SWITCH · 19V297000
2019-04-11
Subaru of America, Inc. (Subaru) is recalling certain 2009-2013 Forester vehicles, 2008-2011 Impreza vehicles, 2008-2014 WRX vehicles, 2005-2014 Legacy vehicles, 2005-2014 Outback vehicles and 2006-2008 Tribeca vehicles equipped with a mechanical key ignition switch installed as a replacement part. The ball spring inside the switch may break, reducing the strength of the ignition switch. If this occurs, the weight on the key ring and certain road conditions could cause the ignition switch to move out of the run position to the accessory position, turning off the engine.
Consequence: The engine turning off unexpectedly can increase the risk of a crash. If a crash occurs under this condition, the air bag may not deploy, increasing the risk of injury.
Remedy: Subaru will notify owners, and dealers will inspect the ignition switch, replacing the ignition switch, if necessary, free of charge. The recall began May 10, 2019. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WUF-91.
EXTERIOR LIGHTING:BRAKE LIGHTS:SWITCH · 19V149000
2019-02-28
Subaru of America, Inc. (Subaru) is recalling certain 2014-2016 Forester, 2008-2016 Impreza sedans, 2012-2016 Impreza station wagons, 2008-2014 WRX sedans (including STI), and 2013-2017 Crosstrek vehicles. Exposure to certain contaminants may cause the brake light switch to malfunction, preventing the brake lights from illuminating and also preventing keyless ignition vehicles from starting and CVT/automatic transmissions from being able to be shifted out of Park.
Consequence: Brake lights that do not illuminate properly will not alert other drivers that the vehicle is slowing or stopping, increasing the risk of crash.
Remedy: Subaru will notify owners, and dealers will replace the brake light switch, free of charge. The recall began April 15, 2019. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WUE-90.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 19V007000
2019-01-09 · EA15001
Subaru of America, Inc. (Subaru) is recalling certain 2010-2013 Forester, 2010-2014 Tribeca, WRX, Outback, Legacy, and 2010-2011 Impreza vehicles sold, or ever registered, in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands.
These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
Consequence: An explosion of an inflator within the passenger frontal air bag module may result in sharp metal fragments striking the front seat passenger, driver or other occupants resulting in serious injury or death.
Remedy: Subaru has notified owners, and dealers will replace the front passenger air bag inflator, free of charge. The recall began January 25, 2019. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is TKA-19.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 19V008000
2019-01-09 · EA15001
Subaru of America, Inc. (Subaru) is recalling certain 2010-2014 Tribeca, WRX, Outback, and Legacy vehicles, 2010-2011 Impreza vehicles and 2010-2013 Forester vehicles sold, or ever registered, in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia.
These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
Consequence: An explosion of an inflator within the passenger frontal air bag module may result in sharp metal fragments striking the front seat passenger, driver or other occupants resulting in serious injury or death.
Remedy: Subaru is notifying owners, and dealers will replace the front passenger air bag inflator, free of charge. The recall began January 25, 2019. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is TKB-19.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 19V009000
2019-01-09 · EA15001
Subaru of America, Inc. (Subaru) is recalling certain 2010-2014 Tribeca, WRX, Legacy and Outback vehicles, 2010-2011 Impreza vehicles and 2010-2013 Forester vehicles sold, or ever registered, in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming.
These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
Consequence: An explosion of an inflator within the passenger frontal air bag module may result in sharp metal fragments striking the front seat passenger, driver or other occupants resulting in serious injury or death.
Remedy: Subaru is notifying owners, and dealers will replace the front passenger air bag inflator, free of charge. The recall began on January 25, 2019. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is TKC-19.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · 18V012000
2018-01-09 · EA15001
Subaru of America, Inc. (Subaru) is recalling certain 2009-2013 Legacy, Forester, Tribeca, WRX and Outback vehicles, and 2009-2011 Impreza vehicles sold, or ever registered, in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands.
These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
Consequence: An explosion of an inflator within the passenger frontal air bag module may result in sharp metal fragments striking the front seat passenger, driver or other occupants resulting in serious injury or death.
Remedy: Subaru will notify owners, and dealers will replace the front passenger air bag inflator, free of charge. The recall began on February 9, 2018. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is TKA-18.
SERVICE BRAKES, HYDRAULIC · 14V830000
2014-12-31
Subaru of America, Inc. (Subaru) is recalling certain model year 2008-2011 Impreza, 2008-2014 WRX and STI, and 2009-2013 Forester vehicles, currently, or formerly, registered in Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, Wisconsin and the District of Columbia that were remedied under recall 14V-311 prior to December 23, 2014. The brake lines may experience brake line corrosion due to salt water splashing on the brake lines through a gap in the fuel tank protector.
Consequence: Brake fluid may leak due to the brake line corrosion and may result in longer distances being required to slow or stop the vehicle, increasing the risk of a crash.
Remedy: Subaru will notify owners, and dealers will apply an anti-corrosion wax to the four-way joint connector area of the brake line system, free of charge. The recall began on January 27, 2015. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WQQ-52. Notes: This recall is specific to affected Forester, Impreza, WRX, and STI customers who had their car remedied under NHTSA recall no. 14V-311 prior to December 23, 2014. Subaru has determined that this remedy was inadequate due to incomplete repair instructions provided to dealers. Affected Forester, Impreza, WRX, and STI vehicles that were not repaired under NHTSA recall no. 14V-311 prior to December 23, 2014 will continue to be processed under NHTSA recall no. 14V-311. Affected vehicles not currently, or formerly, registered in the salt belt states identified in this recall are eligible for repair, at no cost to the customer, upon request.
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS · 14V311000
2014-06-10
Subaru of America, Inc. (Subaru) is recalling certain model year 2005-2009 Outback and Legacy, 2008-2011 Impreza and 2008-2014 Impreza WRX/STI, and 2009-2013 Forester vehicles, currently, or formerly, registered in Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, Wisconsin and the District of Columbia. Salt water could splash on the brake lines through a gap in the fuel tank protector, resulting in excessive corrosion of the brake lines.
Note that affected vehicles not currently, or formerly registered, in the salt belt states identified above are eligible for repair, at no cost to the customer, upon request.
Consequence: Brake line corrosion may result in brake fluid leakage. Fluid leakage may result in longer distances being required to slow or stop the vehicle, increasing the risk of a crash.
Remedy: Subaru will notify owners, and dealers will test the brake system by depressing the brake pedal and inspecting for brake fluid leaks. If no brake fluid seepage is observed, the affected areas will be rustproofed with anti-corrosion wax. If brake fluid seepage is observed, the brake lines will be replaced followed by rustproofing with anti-corrosion wax. These services will be performed free of charge. The recall began July 2014 and second notifications will run through November 2014. Owners may contact Subaru at 1-800-782-2783. Subaru's recall campaign number is WQK-47. Note: This recall supersedes recall 13V-110 which applied to certain 2005-2009 Legacy/Outback vehicles. Vehicles that were remedied under the previous campaign still need additional areas rust-proofed.
Performance
Horsepower
305hp
Torque
290lb-ft
0–60 mph
4.7sec
Quarter mile
13.3sec
Top speed
158mph
Capability & size
Curb weight
3,384lb
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2011 Subaru WRX STI 2.5L H4 Turbo EJ257 Gen2 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.