2023 Mercedes-Benz EQS 450 Forward collision avoidance Problems
- Complaints
- 20about this part
- Share
- 57%of 35 total for the year
- Median mileage
- 6,000miles
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 20 complaints about the forward collision avoidance of the 2023 Mercedes-Benz EQS 450, 57% of the 35 complaints for this model year. Where a mileage was given, the median is 6,000 miles. 1 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The vehicle pre collision automatically stops the car completely five times with no car or any objects in the front. I took the car to Mercedes dealership to see if they can find the issues, but they can’t. On 04/07/2024 I had my wife record while I’m driving and we got video of the car just completely hard breaking on its own with no cars in the front. I am worry that another vehicle will rear end me at higher speed when it does happen again.”
NHTSA complaint #11581634, filed 2024-04“At approximately 10:30 p.m. on January 8, 2023 I, and three passengers (my wife, and another couple), were completing a one hour drive returning from an event in southern California. We traveled on the freeways as we headed home. The speeds on those freeways average between 65 and 75 miles per hour with the flow of traffic. I exited the freeway and pulled up to a traffic light. I made a right turn at the light, then traveled up the road. …”
NHTSA complaint #11501082, filed 2023-01“I own a 2023 Mercedes-Benz EQS 450+. While driving, my vehicle has repeatedly applied the brakes suddenly and forcefully even though there was no vehicle, person, or obstacle in front of me. It feels as though the vehicle incorrectly detects an imminent collision and activates the automatic emergency braking system when there is nothing to hit. This has happened multiple times and is especially dangerous at freeway speeds because the sudden braking creates a risk of being rear-ended and puts the safety of me and my passengers at risk. …”
NHTSA complaint #11770838, filed 2026-10“I was stopped at a stop sign and when the light turn green I pressed the accelerator to move forward unfortunately, the vehicle hard braked for no reason. At first, I thought someone hit me from behind since there was no one in front of me but that was not the case. The braking was so violent that it caused my neck to snap back and forth, which caused the back of my head to hit the seat head support. I was going no faster then 10 mph but not slower then 5mph. In turn, the vehicle is available for inspection. …”
NHTSA complaint #11588360, filed 2024-05“I experienced a phantom braking incident yesterday in my 2023 EQS450+ SUV at 3:11 pm PST. Traveling at around 30 mph, no cars within 20 feet ahead or behind us, the car suddenly engaged the automatic brakes very hard with a loud beep but this condition lasted only a couple of seconds. The impact was hard enough to jolt all passengers in the car. The sound was as if something hit us from behind. Cruise control was not being used at that time. The car then continued to operate normally after that. …”
NHTSA complaint #11516386, filed 2023-04Related service bulletins
- 11020951Jul 25, 2025Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has updated driver assistance system software available for certain subject vehicles. The updated software improves…
- 11019782Jun 28, 2025Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has updated driver assistance system SCN coding available for certain subject vehicles. The updated SCN coding…
- 11018204May 2, 2025Complaint Hand detection system not operating correctly / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist not available" "Active Lane…
- 11013996Feb 3, 2025Complaint Hand detection system not operating correctly / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist not available" "Active Lane…
- 11005334Jul 15, 2024Complaint Hand detection system not operating correctly / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist not available" "Active Lane…
Forward collision avoidance: other model years
Other parts of the 2023 Mercedes-Benz EQS 450
12 complaintsElectrical system
12 complaintsOther or unknown
3 complaintsBody and structure
2 complaintsVehicle speed control
2 complaintsAir bags
1 complaintsFuel system
1 complaintsLane departure
1 complaintsSuspension
1 complaintsTires
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2023 Mercedes-Benz EQS 450
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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