2021 Subaru Ascent Lane departure Problems
- Complaints
- 15about this part
- Share
- 14%of 104 total for the year
- Median mileage
- 1,500miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 15 complaints about the lane departure of the 2021 Subaru Ascent, 14% of the 104 complaints for this model year. Where a mileage was given, the median is 1,500 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Lane assist with cruise control over corrects. On multiple occasions while on the freeway using cruise control the lane assist pulled me into the other lane into other vehicles. I have almost hit two other vehicles. The pull is too strong and crosses lanes. I have to keep it off. Forward collision does not engage.”
NHTSA complaint #11408628, filed 2021-04, 1,500 miles“Lane assist with cruise control over corrects. On multiple occasions while on the freeway using cruise control the lane assist pulled me into the other lane into other vehicles. I have almost hit other vehicles. The pull is too strong and crosses lanes. If not fixed by Subaru, accidents will occur.”
NHTSA complaint #11416528, filed 2021-05, 140 miles“The lane assist feature (only an option when using adaptive cruise control; not the same as lane centering when not using the adaptive cruise control [the basics lane centering works just fine]) seems overly aggressive. Each time I have used lane assist with cruise control, it jerks the car very abruptly at times, almost to the extent of sending it into another lane if I do not intervene. I no longer feel safe using lane assist, so I turn it off when using cruise control. I am very concerned it's going to cause and accident. …”
NHTSA complaint #11403484, filed 2021-03, 5,000 miles“Vehicle wanders on the highway. When passing a vehicle on the road the lane centering assist tries to hug the centerline and the driver must keep pulling he vehicle back to the center of the passing lane. A short lapse of steering could pull the vehicle into the side of the vehicle being passed. Full time job to keep the vehicle from wandering when very liitle wind and almost impossible to keep it from wandering when the wind is blowing 15-20 MPH. Not a pleasant relaxing drive.”
NHTSA complaint #11399576, filed 2021-03, 800 miles“Vehicle drifts on the highway and pulls hard to the left, which is a very concerning safety issue. I have already taken the vehicle to the dealer; they did a calibration of the eyesight. The problem still persists, especially when driving the vehicle on the highway. This has almost pulled me into traffic on a few occasions!”
NHTSA complaint #11581306, filed 2024-04Related service bulletins
- 11021263Jul 29, 2025This announcement provides information about a Subaru of America, Inc. preliminary settlement in a class action lawsuit regarding the EyeSight system in certain Subaru vehicles.
Lane departure: other model years
Other parts of the 2021 Subaru Ascent
20 complaintsElectrical system
18 complaintsVisibility (wipers, defrost, mirrors)
18 complaintsOther or unknown
17 complaintsEngine
12 complaintsBrakes
9 complaintsForward collision avoidance
7 complaintsSteering
7 complaintsBody and structure
7 complaintsFuel system
2 complaintsTires
2 complaintsVehicle speed control
2 complaints
← All problems reported for the 2021 Subaru Ascent
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology