Engine sometimes falters and dies when coming to a stop; usually only in the first few miles of driving. Similar to what a manual transmission would do if you don't put the clutch in, except this is an automatic. Giving it a little bit of gas when it falters can abort the stuttering, but not always, and it isn't always possible to do so safely when you're trying to come to a stop. I've only owned…
2011 Subaru Outback engine problems
severe 47 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
47
Recalls
0
Avg fix
$3,100
1crash
1fire
1injury
When does it fail?
Of the 47 engine complaints filed for the 2011 Subaru Outback, here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Owners have filed 47 engine complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Among the 18 model years of Subaru Outback in our records for engine problems, this one ranks #2 by owner-complaint volume.
The failure pattern owners describe
Buyer takeaway: The 2011 Outback has two dominant engine concerns: head gasket failure (100,000+ miles, $2,000–$2,800 repair, no recall despite decades of reports) and CVT stalling on hard braking (no warning, torque converter replacement $1,500+). Both are known issues Subaru acknowledges through service bulletins but refuses to recall; demand full service history and have a pre-purchase inspection by an independent Subaru specialist.
The 2011 Outback has a pattern of engine failures that Subaru has long known about. Head gasket failure is the most common: owners report overheating, coolant leaks, and engine shutdown starting around 100,000 miles, though some fail as early as 61,000–98,000 miles. The gasket design uses a composite multi-layer construction with graphite coating that warps and cracks under heat, allowing coolant into combustion chambers. Repairs run $2,000–$2,800. Subaru redesigned the cylinder head in 2012 but the problem persists; no recall has been issued despite owners pointing to decades of documented failures across 1990–2011 models.
The CVT transmission stalls without warning during hard braking or sudden stops, usually first appearing around 80,000 miles but sometimes within the first few months of ownership. The faulty torque converter (thrust washer failure) causes violent shuddering, RPM drops, and complete engine shutdown—creating serious safety hazards in traffic. Service Bulletin TSB #16-90-13 R (issued January 2014) confirms the defect, yet Subaru declines to recall it. Torque converter replacement costs $1,500–$2,500. Extended warranty coverage expires within a few years.
Other reported issues include ignition coil corrosion causing sudden power loss, timing belt failure at 2,000 miles, valve guide pullout causing stalling, and catastrophic coolant hose disconnection with hot liquid ejection. One family required emergency hospitalization after this last failure. Exhaust system corrosion appears at 17,000 miles despite proper care.
Same Subaru Outback engine reports on nearby years: 2009 · 2010 · 2012 · 2013 · 2014
Failure modes owners describe
Head gasket and coolant system failures
Head gaskets fail, often leading to coolant leaks into combustion chambers, foaming coolant, cracked radiators, damaged water pumps, and engine overheating. Owners report the issue stems from composite multi-layer gasket design with graphite coating that warps and cracks under heat. The problem manifests as coolant leaks, low coolant warnings, overheating, and occasionally catastrophic coolant system rupture with ejection of hot fluid.
When: 100,000–153,000 miles; some failures as early as 61,000 and 98,000 miles
Symptoms owners cite: Engine overheating; Low coolant warning light; Coolant leaks from head gasket area; Foaming coolant; Cracked radiator; Damaged water pump; Sloshing or gurgling engine sounds; Coolant hose disconnection under pressure; Catastrophic coolant system failure with hot liquid ejection
Repairs/costs cited: Radiator replacement ($800 cited in one case), water pump replacement, head gasket replacement ($2,000–$2,800 cited), full system re-work in some cases. One owner reported total bill of $5,250 for radiator, thermostat, and head gasket replacement plus related breakdowns.
Recalls/TSBs owners mention: Subaru redesigned cylinder heads and camshaft configuration but only shifted the leak to external head gasket areas. No recall issued despite acknowledged industry awareness; online documentation shows problem affecting 1990–2011 models. Dealer service bulletins acknowledge the issue but do not mandate repair under warranty.
CVT transmission stalling and shuddering
Vehicles equipped with CVT transmission stall or shudder violently when braking suddenly or coming to a full stop, particularly during the first few miles of driving or when applying brakes with significant pressure. Condition occurs without warning lights and no diagnostic codes match the problem. Root cause identified as faulty torque converter (thrust washer inside torque converter failure) by dealers and service bulletins.
When: 80,000–153,000 miles; some owners report onset within first few months of ownership
Symptoms owners cite: Violent engine shuddering at complete stops; RPM drop of 200–300 RPM followed by recovery; Engine stalling during hard braking or sudden deceleration; Jerking sensation resembling manual transmission without clutch engagement; Stalling without warning lights or check-engine codes; Engine dies during turns or lane changes when slowing; Loss of power and power steering during stall events
Repairs/costs cited: Torque converter replacement quoted at $1,500–$2,500; one dealer quoted $1,500 parts plus $1,060 labor. One owner reported extended warranty would not cover repair despite service bulletin.
Recalls/TSBs owners mention: Service Bulletin TSB #16-90-13 R issued 1/6/14 addressing CVT locking up after sudden stop due to thrust washer failure. Extended warranty offered on service bulletin but coverage expires; owner reports warranty expired end of July 2018 while still experiencing failures. Subaru has not issued a recall despite widespread complaints and online documentation of similar failures across 2010–2015 Outbacks.
Ignition coil corrosion and failure
Ignition coils fail due to excessive corrosion, resulting in multiple coils failing within a short timespan. Failures cause sudden engine power loss and hesitations without warning.
When: 2014–2015 (4 of 6 coils failed within months); failure occurred between 3–4 years of ownership
Symptoms owners cite: Sudden engine failure; Engine hesitations and loss of power; Unpredictable power loss forcing vehicle to pull over
Repairs/costs cited: Multiple coil replacements required; first failure September 2014, three additional failures December 2015.
Recalls/TSBs owners mention: Subaru of America refused repair citing 3-year warranty expiration, despite owner assertion that simultaneous failure of four components indicates design defect.
Timing belt and tensioner failure
Timing belt fails prematurely, causing severe jerking and clunking noise. Timing belt tensioner and pulleys also require replacement.
When: 2,052 miles
Symptoms owners cite: Excessive jerking while driving at 25 mph; Loud clunking noise
Repairs/costs cited: Timing belt, tensioner, and pulleys replaced at low mileage.
Recalls/TSBs owners mention: Manufacturer notified and planned additional investigation.
Valve failures and valve guide pullout
Valve guides pull out of cylinder head, causing valves to remain open. This causes misfires and stalling. One owner reported three valve failures causing complete engine power loss.
When: 125,000 miles
Symptoms owners cite: Engine warning lights and multiple dash lights flashing; Complete loss of engine power; Misfire; Engine stall
Coolant crossover pipe and hose connection failures
Coolant pipes and hoses disconnect or fail under normal operating conditions, sometimes with violent force. Coolant leaks from connection points where crossover pipe connects to engine block.
When: Variable; one catastrophic failure at 8/20/2022 (mileage not stated)
Symptoms owners cite: Coolant leaking from crossover pipe connections on both sides of engine block; Violent disconnection of coolant hose ejecting pressurized hot coolant; Repeated disconnections of hose within 3-hour window (4 separate failures in one incident)
Repairs/costs cited: One family required emergency hospitalization after hot coolant ejection caused second-degree burns.
Exhaust system corrosion
Muffler and exhaust system rust severely despite vehicle being garaged when not in use and regularly washed. Material defect suspected in construction materials.
When: 17,000 miles
Symptoms owners cite: Severe rusting of muffler and exhaust system
Engine oil burning and leakage
Engine pushes or burns oil excessively at low mileage. Owner references class action lawsuit against Subaru for known engine oil burning defect in newer models and questions why earlier model years not included.
When: 72,000 miles
Symptoms owners cite: Oil being pushed out of engine; Oil burn condition
Recalls/TSBs owners mention: Newer model owners won class action lawsuit against Subaru acknowledging known defect.
Transmission valve body assembly failure
Transmission valve body assembly fails, causing all dash lights to blink and vehicle to lose power.
When: Failure occurred before extended warranty expiration in July 2018
Symptoms owners cite: All dash lights blinking; Loss of vehicle power
Repairs/costs cited: Transmission valve body assembly replacement required.
Recalls/TSBs owners mention: Extended warranty ended July 2018; owner reports dealer should not have sold car given known defect timing.
Air conditioning inadequate cooling performance
Manual air conditioning systems on full maximum setting cool to 39–41°F initially but output temperature reduces to 50–53°F after 10 minutes without any setting change. Cabin temperature reaches only 82°F after one hour of operation when outside temperature is 92–94°F even on maximum settings with internal circulation.
When: Unknown mileage
Symptoms owners cite: Reduced A/C output temperature after 10 minutes of operation; Inadequate cabin cooling
Recalls/TSBs owners mention: Dealer indicated this is normal operation for this make and model.
Cam carrier leaks
Cam carrier develops leaks. Owner notes this is a common problem across the model with no recall issued.
When: Unknown mileage
Symptoms owners cite: Cam carrier leaking
Engine fire
Vehicle was consumed by fire.
When: Unknown
Symptoms owners cite: Vehicle fire
Synthesized from 47 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
Had engine trouble with your 2011 Subaru Outback?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2011 Subaru Outback?
It's a meaningful issue. 47 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Across the 35 complaints that reported odometer mileage, most engine failures cluster between 71,000 and 130,000 miles, with the median around 100,000. A quarter of owners report trouble before 71,000; a quarter make it past 130,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2011/Subaru/Outback.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.