There are 3 stored owner reports matching the powertrain & transmission leading-label group for the 2024 Volvo XC40 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 3 of 3 matching reports.
Open the full vehicle complaint log (all categories)Brake system failed. I was NOT in one pedal mode. I have up to date software. After break system failed I was unable to put vehicle in park. Parking break could not be applied. Could not turn car off or lock doors. I was driving on interstate when it occurred. I got multiple warnings on display. I was lucky to pull over and not crash.
2024 Volvo xc40 with 10,000 miles suddenly became completely disabled on the express lane of a highway. The flashers were inoperable. The windows could not be opened. Road ranger was called. Nothing was wrong with the battery. Car was towed to a safe spot. Car was taken to Volvo dealership. Volvo determine that serpentine belt came apart and the tensioner was the cause - a manufacturer defect. This was very dangerous situation for the driver and unusual for a car with such low miles to have such a break in the serpentine belt. Fortunately there was an accident ahead and cars were traveling slowly in the express lane.
I pulled over right side of street to park behind a parked vehicle to a visit house across the street. Was too far out from curb so I backed up about 12-15 feet or so. Put car in drive and slowly started to drive toward curb when car suddenly accelerated very hard. I turned steering to left to avoid hitting the car in front, straightened car out but could not stop it until it stopped about 20-30 feet down the road. Brake was not stopping my car. The acceleration was something like being on a ramp to get on highway and pressing pedal down to get to highway speed. It was a very hard acceleration. Very frightening. I got an appointment tomorrow for volvo service to look at this. Drove the car after this happened and today without any incident. I bought the car new in Mar 2024 and have NEVER experience this.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.