This bulletin announces a design change made to the CVT Control Valve Body which incorporates an enhanced valve sleeve to improve durability.
View on NHTSA →2018 Subaru Crosstrek powertrain problems
severe 13 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
13
Recalls
0
Avg fix
$2,500
3crashes
When does it fail?
Of the 13 powertrain complaints filed for the 2018 Subaru Crosstrek, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 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
Among the 7 model years of Subaru Crosstrek in our records for powertrain problems, this one ranks #3 by owner-complaint volume.
No new NHTSA powertrain complaint has been filed on this vehicle in over 4 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.
View on 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.
View on 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.
View on NHTSA →This bulletin has been developed in response to a small number of customer concerns regarding fluid seepage found coming from the CVT assembly.
View on NHTSA →Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2018 Crosstrek's powertrain has a pattern of serious defects affecting both driveability and safety. Owners report intermittent stalling at low speeds, sometimes during traffic—one owner was rear-ended after stalling, another stalled on an incline in snow and slid backward into a guardrail. Several vehicles shut down completely after 2,000 miles with ECM failure; one owner's ECM was replaced, yet the stalling recurred.
Acceleration issues are widespread: bucking and shuddering, jerky shifting in stop-and-go traffic, hesitation between 2k–3k RPM that nearly causes collision when pulling into traffic, and sluggish response during lane changes. One owner diagnosed his own vehicle after a dealer spent 80+ days unable to find the problem. Another reported involuntary acceleration during parking that caused a tree collision.
A manual transmission owner at 70,000 miles discovered a failed transfer case with metal shavings inside—a sign of imminent complete failure. One vehicle shifted into reverse but moved forward instead. A CVT owner reports the transmission jerks as if brakes are applied during normal operation. Dealers either cannot diagnose these issues (some cite carbon buildup as a red herring) or repair attempts per technical service bulletins fail. Warranty coverage expires at 60,000 miles or five years, leaving owners stranded with major costs.
Same Subaru Crosstrek powertrain reports on nearby years: 2016 · 2017 · 2019 · 2021
Failure modes owners describe
Transfer case/center differential failure with metal debris
Transfer case center differential gear set fails, producing loud clunking noise at low speeds. Metal shavings found inside the defective case during replacement, raising risk of rapid escalation to complete transmission failure.
When: 70,000 miles
Symptoms owners cite: loud clunking noise at low speeds; metal shavings in transfer case
Repairs/costs cited: Transfer case replacement required; Roberts Auto Shop performed diagnosis and replacement
Recalls/TSBs owners mention: Subaru dealership (North Tampa) noted this issue is typically seen in CVT vehicles, rarely in manual transmission models. Powertrain warranty covers only 60,000 miles or five years; owner exceeded both limits.
Bucking and shuddering under acceleration
Vehicle exhibits intermittent bucking and shuddering during acceleration, progressively worsening over months. Dealer unable to diagnose after 80+ days of service visits and 13-day inspections. Owner using personal scan tool identified anomaly in live data that dealer and Subaru tech could not resolve.
When: 5,600 miles; progressively worsened over months from November 2017 through April 2018
Symptoms owners cite: intermittent bucking under acceleration; shuddering during acceleration; progressive worsening
Repairs/costs cited: Owner diagnosed using personal scan tool after dealer failed; dealer unable to repair despite 80+ days of attempts and Subaru Tech Case #63
Recalls/TSBs owners mention: Subaru customer service informed owner after 63+ days that nothing could be done; issue unresolved
Intermittent hesitation and jerking during acceleration
Vehicle hesitates and jerks during acceleration, particularly between 2k–3k RPM, worsening over time. Dealer misdiagnosed as carbon buildup in fuel lines; fuel line cleaning provided temporary improvement but did not resolve. No dashboard warning lights. Multiple forum posts report same issue on other 2018 Crosstreks.
When: Present since purchase (used vehicle, August 2019); worsened over roughly one year
Symptoms owners cite: hesitation with acceleration; jerking and surging between 2k–3k RPM; jerking at 4k+ RPM; knock or bloop sound from passenger rear near gas tank
Repairs/costs cited: Fuel lines blown out; problem lessened but not resolved. Air filter replaced with no change.
Computer malfunction causing stalling and immobilization
Engine control module (ECM) malfunction causes sudden stalling and loss of power while vehicle is in motion or stopped. Three separate incidents occurred within 2,000 miles of purchase: stalling in bumper-to-bumper traffic on I-25, stalling at a stop sign, and stalling while exiting highway at 40 mph. Complete ECM replacement required after first incident; malfunction recurred twice after replacement.
When: Approximately 2,000 miles after purchase (April 2018), continuing through subsequent months
Symptoms owners cite: sudden stalling while stopped in traffic; sudden stalling at stop sign; sudden stalling while exiting highway at 40 mph; all dashboard lights illuminated
Repairs/costs cited: Complete ECM replacement after first incident; malfunction recurred after replacement
Involuntary sudden acceleration during parking
Vehicle accelerated uncontrollably and without driver input while owner was performing parallel parking, resulting in collision with tree and bushes and considerable body damage.
When: Approximately 4.5 years into ownership
Symptoms owners cite: involuntary sudden uncontrolled acceleration during parking
Repairs/costs cited: No engine light present; dealer found nothing to scan and deemed car okay
Recalls/TSBs owners mention: Subaru national customer relations referred owner to local dealership; no resolution offered
Stalling on incline with AWD and Check Engine light illumination
Vehicle stalled while climbing residential hill in light snow conditions. Check Engine light and AWD light illuminated simultaneously. Vehicle had only 3,150 miles on odometer with stock all-season tires. Owner slid backward approximately 500 feet into guardrail, resulting in cosmetic damage and bent right wheel.
When: 3,150 miles
Symptoms owners cite: stalling while climbing snowy hill; Check Engine light illumination; AWD light illumination
Repairs/costs cited: Traded vehicle into dealership; dealership had two other 2018 Crosstreks traded in for similar AWD system and tire issues
Intermittent stalling at low speeds
Vehicle stalled intermittently at low speeds, resulting in rear-end collision. Air bags did not deploy. Vehicle repaired per TSB 10144878 (Equipment, Power Train, Engine), but remedy failed and malfunction continued.
When: 7,000 miles
Symptoms owners cite: intermittent stalling at low speeds
Repairs/costs cited: Repaired per TSB 10144878; remedy failed
Recalls/TSBs owners mention: TSB 10144878 applied; manufacturer referred owner back to dealer after remedy failed
Reverse gear malfunction—vehicle moves forward instead of backward
When gear is shifted into reverse, vehicle moves forward instead of backward. No warning indicators illuminate. Failure recurred numerous times.
When: Approximately 6,500 miles
Symptoms owners cite: vehicle moves forward when reverse gear selected; no warning lights
Repairs/costs cited: Independent mechanic unable to diagnose or repair
Recalls/TSBs owners mention: Dealer and manufacturer not made aware
Jerky, bucking, and hesitant acceleration with vibration
Vehicle exhibits jerky, bucking, and hesitant acceleration during shifts in forward and reverse. Hesitancy has nearly caused traffic collisions when pulling out into traffic or from parking spaces. Vibration and shaking occur at approximately 1,700 RPM and occasionally at 1,100 RPM.
When: Present since purchase June 2018
Symptoms owners cite: jerky acceleration; bucking; hesitant acceleration; vibration at 1,700 RPM; vibration at 1,100 RPM; near-collision incidents from hesitation
Repairs/costs cited: Multiple dealership visits; issue not resolved
Sluggish acceleration during lane changes and traffic crossing
Vehicle exhibits slow and sluggish acceleration when crossing traffic to change lanes or making left/right turns. Vehicle behaves as if it wants to stall or remain in cross traffic, creating collision hazard.
When: Present since purchase (non-Subaru dealer, early 2021)
Symptoms owners cite: slow acceleration during lane changes; sluggish response when crossing traffic; behavior as if vehicle wants to stall
CVT transmission jerking and vibration
CVT transmission jerks and behaves as if brakes are applied during deceleration. Trouble shifting during stop-and-go traffic causes jerking. Vehicle occasionally vibrates as if traveling over rough pavement while in motion during urban or highway traffic.
When: Unspecified mileage
Symptoms owners cite: jerky transmission operation; feels like brakes applied during stopping; trouble shifting in stop-and-go traffic; vibration while in motion
Synthesized from 13 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
under light throttle, car jerks at approximately 25 mph.
Tl* the contact owns a 2018 Subaru crosstrek. The contact stated that when the gear was shifted into reverse, the vehicle would move forward. There were no warning indicators illuminated. The failure recurred numerous times. The vehicle was taken to an independent mechanic, but was not diagnosed or repaired. The dealer and manufacturer were not made aware of the failure. The failure mileage was…
Had powertrain trouble with your 2018 Subaru Crosstrek?
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 2018 Subaru Crosstrek?
It's a meaningful issue. 13 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 13 complaints filed, powertrain issues most often appear around 12,836 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/2018/Subaru/Crosstrek.
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.