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Forward collision avoidancePart report

2019 Mercedes-Benz E 450 Forward collision avoidance Problems

Complaints
3about this part
Share
18%of 17 total for the year
Median mileage
3,700miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 3 complaints about the forward collision avoidance of the 2019 Mercedes-Benz E 450, 18% of the 17 complaints for this model year. Where a mileage was given, the median is 3,700 miles. 1 of these say a crash was involved, according to the filers. 1 recall campaign on record is filed under a similar system.

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.

“While traveling at highway speeds with adaptive cruise control safety systems engaged, the vehicle failed to detect a hazard immediately ahead in its lane. The Forward Collision Warning failed to alert the driver, and the Automatic Emergency Braking (AEB) failed to initiate automated emergency deceleration. Manual emergency braking was attempted by the driver in the final milliseconds, but the vehicle's braking system failed to sufficiently decelerate the vehicle, resulting in a high-energy frontal collision. …”

NHTSA complaint #11741091, filed 2026-05

“Central digital driver cluster and lighting behind all speedo/tachometer randomly turns off while driving unexpectedly then fades back on. - can not see control indicators for adaptive cruise control when display fades out - can not see what gear the transmission is in when display fades out - at night can not see speedo, tach, or any items on the display when it fades out Dealership said they could not duplicate and didn't want to replace the cluster, because they have to send the part back to mercedes engineering and if the part wasn't faulty, the dealership would have to absorb the cost…”

NHTSA complaint #11433288, filed 2021-09

Related recalls

Related service bulletins

Forward collision avoidance: other model years

YearComplaintsShare of year
202219%
2019318%

Other parts of the 2019 Mercedes-Benz E 450

Electrical system
5 complaints
Brakes
4 complaints
Engine
4 complaints
Transmission and drivetrain
4 complaints
Back-over prevention (rear camera)
2 complaints
Steering
2 complaints
Air bags
1 complaints
Engine cooling
1 complaints
Exterior lighting
1 complaints
Fuel system
1 complaints
Lane departure
1 complaints
Other or unknown
1 complaints

← All problems reported for the 2019 Mercedes-Benz E 450

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