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Vehicle speed controlPart report

2021 Subaru Ascent Vehicle speed control Problems

Complaints
2about this part
Share
2%of 104 total for the year
Median mileage
—not reported
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the vehicle speed control of the 2021 Subaru Ascent, 2% of the 104 complaints for this model year. 1 of these say a crash was involved, according to the filers.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Adaptive Cruise Control, Automatic Emergency Braking, Forward Collision Warning, Lane Departure Warning, Lane Keeping Assistance, Eye Sight, RAB, some ! Symbol, and check engine light are all on and not working. You know everything that makes a Subaru. This is not the first or even second time. We are on the fourth instance of this happening. We live 2+ hrs away from the closest dealers. The first few times it occurred, we called to make a appointment. Each time was always a few weeks out and the issue would clear a day or two before. This last time has been going on for 6 weeks. …”

NHTSA complaint #11495560, filed 2022-11

“The driver was driving into a parking lot preparing to park, when the vehicle accelerated and started going forward at a higher speed. The vehicle struck a parked vehicle, then travelled across the parking lot, over curbs, a grass median, landscaping, and struck a rock building at a high rate of speed, causing a partial collapse of the wall. The vehicle is available for inspection through the insurance company. No analysis of data was done and nothing was inspected. There were no symptoms of the problem beforehand. The vehicle has automatic emergency braking, but it evidently didn't operate. …”

NHTSA complaint #11607255, filed 2024-08

Vehicle speed control: other model years

YearComplaintsShare of year
202517%
202424%
202337%
202212%
202122%
202031%
201951%

Other parts of the 2021 Subaru Ascent

Transmission and drivetrain
20 complaints
Electrical system
18 complaints
Visibility (wipers, defrost, mirrors)
18 complaints
Other or unknown
17 complaints
Lane departure
15 complaints
Engine
12 complaints
Brakes
9 complaints
Forward collision avoidance
7 complaints
Steering
7 complaints
Body and structure
7 complaints
Fuel system
2 complaints
Tires
2 complaints

← All problems reported for the 2021 Subaru Ascent

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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