This bulletin announces a design change made to the CVT Control Valve Body which incorporates an enhanced valve sleeve to improve durability.
full bulletin at NHTSA ↗2016 Subaru Legacy powertrain problems
severe 12 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
12
Recalls
0
Avg fix
$2,500
1crash
1injury
What stands out
No new NHTSA powertrain complaint has been filed on this vehicle in over 3 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This bulletin announces the service manual correction regarding clutch master cylinder reservoir service procedures.
full bulletin at NHTSA ↗This bulletin announces a design change made to the CVT Control Valve Body which enhancement was implemented to prevent abnormal operations. The updated valve body incorporates an enhanced valve sleeve to improve durability.
full bulletin at NHTSA ↗This bulletin announces a design change made to the CVT Control Valve Body. The updated valve body incorporates an enhanced valve sleeve to improve durability.
full bulletin at NHTSA ↗This bulletin has been developed in response to a small number of customer concerns regarding fluid seepage found coming from the CVT assembly.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners describe a pattern of CVT transmission failures occurring from 17,000 miles onward, with catastrophic loss of drive at highway speeds and in parking situations. One owner experienced sudden acceleration into a tree at 17,000 miles; others report transmission grinding noise, jerking, violent shaking, and complete failure requiring replacement at 64,800 miles and again 12 miles after dealer service. Transmission delayed engagement is widespread—vehicle drifts several feet before engaging with a lurch when shifting between drive and reverse, with one owner noting this violates Subaru's own owner's manual guidance against using inertia to move the vehicle.
Cold-start idle surge on 3.6L engines causes unexpected lurching in driveways, intersections, and parking lots without foot on accelerator. Owners report harsh downshifts throwing occupants forward, and one describes a severe forward lurch when stopped in drive following an EyeSight system failure. The shift lever ignition key gets stuck in accessory position, requiring repeated gear manipulation to release it—Subaru acknowledges this faulty shift plate sensor issue but has not recalled it.
An owner with 90,000 miles reports confirmed camshaft seal oil leak pooling in the battery area and producing burning smell; independent specialists confirmed this as a known Subaru issue, though dealer coverage has been inconsistent. Subaru extended CVT warranty from 5/60,000 miles to 10/100,000 miles in September 2018, but owners report denial once mileage exceeds the limit by a small margin.
Same Subaru Legacy powertrain reports on nearby years: 2013 · 2015
Failure modes owners describe
CVT transmission internal failure and grinding
Sudden catastrophic CVT failure causing loss of drive, slipping, grinding noise, jerking and violent shaking at highway speeds and parking situations. Occurs with and without warning lights. Some failures follow repeated dealer service attempts.
When: 17,000 to 70,000+ miles; some failures recur within 12 miles of repair
Symptoms owners cite: loud bang followed by transmission slipping; grinding noise felt above 50 mph; jerking and violent shaking; loss of drive when accelerator pressed; transmission does not engage when shifting between reverse and drive; vehicle drifts before transmission engages with a lurch
Codes mentioned: P0712: Transmission Temperature Sensor Circuit Low
Repairs/costs cited: Valve body replacement followed by full transmission replacement; costs vary from warranty coverage to $8,200 out-of-warranty
Recalls/TSBs owners mention: Extended warranty for CVT on 2016–2017 Legacy/Outback from 5 years/60,000 miles to 10 years/100,000 miles (effective 9/30/2019); goodwill warranty repairs on some units; some owners denied coverage once outside extended warranty mileage
Cold-start idle surge and lurching
Engine surges and lurches after cold start on 3.6L 6-cyl models due to erratic idle control. Idle speed increases unexpectedly when vehicle stops or creeps, causing unintended forward or reverse motion without accelerator input.
When: Daily occurrence on cold starts; not present when engine is warm
Symptoms owners cite: high idle speed immediately after cold start; idle speed drops when vehicle put into gear and brakes released; idle speed increases again as vehicle slows, causing unexpected lurching; vehicle moves unintentionally in parking lots, driveways, and intersections without foot on accelerator; impossible to creep vehicle at low speed
Transmission delayed engagement and harsh downshifts
Transmission enters neutral state before engaging when shifting between reverse and drive, with delay lasting seconds and allowing vehicle to drift. Accompanied by harsh premature downshifts at low speeds causing abrupt deceleration and forward body throw.
When: Present since March 2016; consistent across all driving conditions and engine temperatures
Symptoms owners cite: significant neutral delay shifting from reverse to drive or drive to reverse; vehicle drifts several feet before transmission engages; lurch when transmission finally engages; harsh downshift from 25 mph to 15 mph when removing foot from accelerator; forward body throw during braking
Recalls/TSBs owners mention: Subaru factory engineer inspection and three dealer service attempts concluded this is normal behavior; no repairs made
Unexpected acceleration events
Vehicle suddenly accelerates without driver input during parking maneuvers and gear shifting. One owner reported sudden acceleration into a tree followed by acceleration in reverse into another vehicle.
When: 17,000 miles reported for one severe incident
Symptoms owners cite: sudden acceleration during parking; acceleration when shifted into reverse; inability to control vehicle
Repairs/costs cited: Vehicle deemed total loss; air bags did not deploy
CVT bucking and lurching when stopped
CVT transmission lurches violently forward when vehicle is stopped with brake depressed and in Drive. Lurch described as severe enough to feel like rear-end collision. Occurs following EyeSight system failure and reset.
When: Six times in four days after EyeSight system failure
Symptoms owners cite: severe forward lurch when stopped in Drive with brake depressed; vehicle bucking forward with force sufficient to cause injury to person standing outside vehicle; occurs after EyeSight system dashboard warning and reset while driving
Recalls/TSBs owners mention: Dealership described as 'coy' about resolution; no repair completed
Shift lever ignition key stuck
Key becomes stuck in accessory position and cannot be removed when vehicle is parked and ignition turned off. Requires repeated gear shifting and engine restart to release key. Related to faulty shift plate sensor.
When: 35,000 miles reported; condition persistent once started
Symptoms owners cite: key stuck in accessory position; cannot remove key from ignition; exterior lighting and interior electronics remain on; backup camera turns on while not in reverse
Repairs/costs cited: Shift lever plate replacement required; one vehicle not repaired and remained at dealer
Recalls/TSBs owners mention: Subaru aware of shift plate sensor malfunction in 2016 Legacy and 2017 Forester; no recall issued
Camshaft seal oil leak
Camshaft seal leaks oil into engine bay and produces burning oil smell. Initially misdiagnosed as careless oil change or minor gasket cover leak. Confirmed by independent specialists as known Subaru issue. Oil pooling in battery case area.
When: January 2022 or earlier; 90,000 miles
Symptoms owners cite: significant oil pooled in battery case holder; burning oil smell while driving; oil appearing at every dealer oil change
Repairs/costs cited: Gasket cover replacement and cam carrier seal work required; independent specialists confirmed camshaft seal is the source
Recalls/TSBs owners mention: Dealership initially denied coverage; Subaru of America investigating; specialists indicated this is a known Subaru issue they are actively working on; owner advised to contact Subaru as it should be covered
Synthesized from 12 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
I had a transmission failure on my 2016 Subaru Legacy and there were no warning signs before this incident occurred. I was on a road trip driving at highway speeds and suddenly without warning I heard a loud bang. Then the "at oil temp" light came on, then the "check engine light", smelled something burning and also felt some slipping in the transmission. I pulled over as soon as I could. I…
When shifting from reverse to drive there is an extended delay and application of throttle causes a severe lurching of the car which can cause an accident.
Had powertrain trouble with your 2016 Subaru Legacy?
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 powertrain problem on the 2016 Subaru Legacy?
It's a meaningful issue. 12 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Based on the 12 complaints filed, powertrain issues most often appear around 33,885 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain 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 powertrain?
No active recalls currently cover powertrain 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/2016/Subaru/Legacy.
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.