2021 Subaru Crosstrek: jerking or lurching

Filed May 20, 2026 · Electrical, Engine · CO

On [XXX] ~[XXX] PM, at highway speed on [XXX] eastbound near Frisco, CO (a mountain interstate), returning to Denver from Salt Lake City, my 2021 Subaru Crosstrek suddenly and without warning dropped into reduced-power limp mode and began lurching and shaking while the engine kept running. I lost the ability to accelerate or maintain speed. At the same moment the check engine light came on and multiple active safety systems automatically disabled: EyeSight, pre-collision braking, vehicle dynamics (traction/stability) control, and hill start assist. It took about two minutes to manage the lurching, power-limited vehicle across multiple lanes of traffic to reach the shoulder. My partner was in the vehicle. Had this happened on a bridge, a grade without a shoulder, a tunnel approach, or in heavier traffic, I believe a collision was a realistic outcome. The vehicle was towed to a Subaru dealer and diagnosed with a failed Thermo Control Valve. Sixteen trouble codes were stored, including P26A6, P0606, P060B, P2138, P2135, P2122, P2119, P2004, P2005, and P0191. Mileage was 49,983. There was no prior symptom. The vehicle had a full multi-point inspection at the same dealer only 11 days and ~1,400 miles earlier ([XXX]); nothing was flagged. This failure mode is already known to Subaru, addressed by Technical Service Bulletin 09-119-24 and a warranty extension to 15 years/150,000 miles; the dealer repair order confirms the TSB. I am concerned Subaru handles a safety-relevant failure, one that disables collision-avoidance systems at highway speed, through a quiet warranty extension rather than a recall or owner notification. Owners get no warning and discover it only when it fails dangerously. I request the federal safety agency open a formal safety defect investigation. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Feb 9, 2025 · Transmission · VA

I was experiencing a weird binding or lurching in my drive train which made my Subaru feel unstable. I am a mechanic so I investigated these symptoms online and found that a large number of Subaru owners with manual transmissions were experiencing the same issue......a failing viscous coupler was the issue. There were no warning lights or indications prior to failure A failing viscous coupler will not properly engage the front wheels when needed, causing reduced traction in slippery situations, increasing the risk of sliding or spinning out. Uneven power distribution: When a viscous coupler fails, it can lead to uneven power distribution between the front and rear wheels, potentially causing the vehicle to pull or jerk, especially during turns. Sudden engagement: In some cases, a failing viscous coupler might engage too aggressively, causing a sudden jolt or shudder, potentially leading to loss of control. I purchased and replaced this component at my own expense not knowing the magnitude of the issue. This is a definite safety issue that could lead to serious injury or even death. I have the old part in my possession, it failed around 85,000 miles. One of the mechanics in the Subaru forum said he had submitted a report to the federal safety agency but I didn't see anything on your sight. Thank you for your help. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 8, 2023 · Transmission · NJ

When slowing down the vehicle almost down shifts causing it to lurch forward. Notified Subaru and took to 2 dealers which were all no help. Subaru of America did NOTHING to assist

Filed Nov 6, 2022 · Brakes · MT · crash · 1 injury

In the winter of 2021-22, while parallel parking, backing up, then pressing the brake, my Crosstrek spontaneously accelerated in reverse and rammed into the truck already parked behind me. The Crosstrek paused, then rammed again, as I pressed harder on the brake. I put the car into “park” and turned off the engine. I was baffled and had no explanation for what happened. Thank goodness a person wasn’t between my Crosstrek and the truck. More recently, on October 4, 2022, I was at the post office mailbox drop-off. My Crosstrek was stopped with my foot on the brake. Some mail had fallen out of the overstuffed mailbox, I opened my door, set my foot outside, leaned over to pick up the mail, and my Crosstrek spontaneously accelerated forward. My car door hit the cement pylon and closed on my leg. The car lurched forward again, then stopped, and I was able to open the door. My leg was broken with a compound fracture and my foot was nearly ripped off. I called for help, 911 was dispatched, and I was rushed to the hospital in an ambulance.

Filed Feb 8, 2022 · Driver assistance, Steering · IL

I just leased a new '21 Crosstrek Limited. With only 90 miles on the car, while driving on the highway using the adaptive cruise control and lane keep assist, the vehicle started aggressively jerking over towards semi trucks (while going 70mph)- I had to give significant input to not be pulled into a semi truck. I turned off the feature then turned back on. Again, it was hard jerking only towards semi trucks. Drove back to the dealership. Their mechanic took for a drive and said the exact same thing, that it was "sketchy" and jerking towards semi trucks. It was suggested I bring back if the "condition persists" which would mean risking a fatal collision with a semi. I contacted the GM of the dealership and explained what was happening and he said to being back again and they'd get a field tech from Subaru to test. Their service manager test drove and noted the same thing, as did the field tech. "Severely pulls to the right as trucks pass. Test drive vehicle and found that when using lane centering, vehicle is quite jerky and pushes towards centerline, especially when larger vehicles like a semi trailer is present. Recommended calibrating eyesight camera and test driving again". They calibrated the Eyesight and I picked back up. Drove back on the highway and turned on LKA, this time the steering was completely taken over and jerking all over the lane and flashing telling me to keep hands on the wheel when both hands were very tight on the wheel. It's continued to jerk all over while using lane keep assist and when I try to override the steering to avoid a collision the wheel feels like it's fighting me. It's extremely dangerous. The car now has 300 miles and I'm terrified it's going to kill me and it's putting everyone on the road at risk. I had the same tech in my '19 Impreza Limited and didn't have a single issue. I fear there is a serious defect with the Eyesight and LKA. No codes are present. They said vehicle is operating as designed, it's now more more erratic

Filed Oct 1, 2021 · Transmission · AL

I have been experiencing shuddering/jerking/hesitation in my vehicle since July. The dealership has had it in their service department several times and cannot diagnose the issue. Subaru of America was contacted and gave no resolution to repairing the vehicle. They did not inspect the vehicle, rather gathered the "data" from the dealership. The shuddering/jerking/hesitation happens from a start to stop position and is incredibly dangerous when pulling out into traffic or crossing over lanes in a left hand turn. This malfunction can cause a collision and is a huge safety concern of mine. I do not feel comfortable putting my life at risk driving this vehicle. The dealership has only tested the CVT transmission and ran "data" and cannot seem to tell me what is wrong with the vehicle, though there is clearly an issue, whether it is the CVT transmission or another component of the vehicle. I see several similar complaints on the federal safety agency website for the Crosstrek dating back to 2015. I am confused as to why the manufacturer is not being held responsible for a defect that is so dangerous. Is it going to take someone getting seriously injured or a death before this is investigated? I encourage other Crosstrek owners to come forward and report similar issues you are having to the federal safety agency.

Filed Jul 15, 2021 · Engine, Transmission · DE

SHUDDERING - CVT belt or pulley not working properly? JERKING, HESITATION - Crosstrek will not go when the gas pedal is pressed or hesitates or pauses for a moment after the gas pedal is engaged