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Forward collision avoidancePart report

2021 Hyundai Elantra Hybrid Forward collision avoidance Problems

Complaints
3about this part
Share
10%of 30 total for the year
Median mileage
—not reported
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the forward collision avoidance of the 2021 Hyundai Elantra Hybrid, 10% of the 30 complaints for this model year.

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.

“At around 93k miles my HECU unit apparently malfunctioned at the same time as the left front tire speed indicator. All of my safety features ABS, adaptive cruise control, lane departure, lane keeping etc do not work because of this.”

NHTSA complaint #11621727, filed 2024-10

“On a few occasions (3?) the cars’ automatic emergency braking feature activated while driving at both highway and normal speeds. On none of the occasions was there inclement weather or a “slick” condition on the road. The feature would activate, give a visual and audible warning, and then de-activate within a few seconds. When the feature activated, I felt the car jerk a bit to slow down, and sort of swerve in one direction before righting itself. There is a possibility that the feature activated because I had manually enabled the Auto Hold feature as well which I usually do.”

NHTSA complaint #11521478, filed 2023-05

Related service bulletins

Forward collision avoidance: other model years

YearComplaintsShare of year
2025120%
20231324%
2022615%
2021310%

Other parts of the 2021 Hyundai Elantra Hybrid

Electrical system
11 complaints
Vehicle speed control
11 complaints
Engine
9 complaints
Brakes
5 complaints
Fuel system
4 complaints
Other or unknown
4 complaints
Exterior lighting
1 complaints
Suspension
1 complaints
Transmission and drivetrain
1 complaints

← All problems reported for the 2021 Hyundai Elantra Hybrid

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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