Owner-reported issues — NHTSA
9 complaints filed with the National Highway Traffic Safety Administration for the R232 across model years 2022–2023. Federal public records, updated weekly.
| ELECTRICAL SYSTEM | 5 reports |
| ENGINE | 4 reports |
| LANE DEPARTURE | 1 reports |
| BACK OVER PREVENTION | 1 reports |
| UNKNOWN OR OTHER | 1 reports |
| POWER TRAIN | 1 reports |
| FUEL/PROPULSION SYSTEM | 1 reports |
| FUEL SYSTEM | 1 reports |
Selected owner reports
2022 · ELECTRICAL SYSTEM
The electrical systems drains the two batteries after the car sits idle for a few hours. If it can be started, many of the safety features are inoperable until the car is driven for 30 or 40 minutes. I've had it to multiple Mercedes dealers and all they do is re-charge the battery and told me to get a trickle charger. Even after being on the charger, it failed to start. I was the third owner. No one had owned this car for more that a year. Service records indicate that previous owners had same issues. I purchased it in Nov of 2024 from Mercedes Benz of Clearwater, FL. I took it back and traded
2022 · ELECTRICAL SYSTEM
MBUX system would not turn on. Warnings of Blind Spot in operatable, Parktronic not operatable. Was not able to access any features through MBUX. Climate Control, Operation of Covertable Top, Maps, all options run through MBUX. It was a safety issue because the battery light comes on, after being on charge, and without access to MBUX, you do not know if the car will stall on the freeway, or at a stop light. Safety issues also around front lift without cameras access. The vehicle was inspected at the Mercedes Benz Dealer and they fixed it, but after a day, the battery still isn't charging after
2022 · ELECTRICAL SYSTEM
The contact owns a 2022 Mercedes-Benz AMG SL55. The contact stated that upon entering the vehicle, the vehicle failed to detect the presence of the key, after which the vehicle failed to start. No warning lights were illuminated. The vehicle was taken to the dealer, who was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 9,000.
2022 · UNKNOWN OR OTHER
Car reports low or critical battery while having car doors open to detail. This is a known issue for this vehicle. There is a campaign to fix this issue but I am not on the list of cars to be fixed.There have been reports that these cars die on the street and this could be very dangerous. Since I am still having these issues I am asking that my car receive the fix and my family can be safe from this issue. My car just sitting for a few days also receives a critical battery notice. Please assist me in this manner. Thanks in advance for your help. The cause is coming from the key fob as stated i
2022 · POWER TRAIN
When driven on the highway, speed drops abruptly down (65 mph to 40 mph) stuck on 4 or 3rd gear in this automatic 9 speed transmission and gear won't shift up causing engine rpm rise over 3000 & gas pedal won't have effect even it was pushed down to floor all the way. Almost rear ended in multiple occasion & it is extremely dangerous to change lane to get off to safety as car does not respond to throtle up or gas pedal to speed up. Dealer was not able to duplicate issue in two service visit & this already happened third time in a raw and car is back in dealership for diagnostic. No warning
2022 · ELECTRICAL SYSTEM
Initially got a transmission malfunction warning and to turn car off. The cars battery keeps dying at only 1500 miles. Constantly needs to be on trickle charger. Recently the car died, charged battery. Car turned over for 3 seconds then stalled. Now car even with full battery with turn over but will not start whatsoever. Has to be towed. Multiple people ok forms reported this same issue.
Source: NHTSA consumer complaint database · synced 2026-09-21