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Transmission and drivetrainPart report

2021 Ford Bronco Sport Transmission and drivetrain Problems

Complaints
191about this part
Share
27%of 712 total for the year
Median mileage
54,000miles
Trend
RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.

NHTSA recorded 191 complaints about the transmission and drivetrain of the 2021 Ford Bronco Sport, 27% of the 712 complaints for this model year. Where a mileage was given, the median is 54,000 miles. 1 of these say a crash was involved and 1 a fire, according to the filers. 2 recall campaigns on record are filed under a similar system.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“On 3/25/23, I was driving down a 40m and then completely shut down. The entire engph road. I had been stopped at a stoplight and as soon as I started to drive again, the car started moving forwardine, all power (dashboard lights, display screen, everything). I panicked and went to go turn the caution lights on--they wouldn't work. As people behind me started honking, I tried to roll down my window to motion them on---the window wouldn't roll down. I had no choice but to open my car door, and stick my hand out to start waving people on behind me. …”

NHTSA complaint #11513866, filed 2023-03, 4,500 miles

“Not even 200 miles, engine began rattling and stalling out. I was stranded in the middle of the road at a green light. Dealership claims torque converter problem. Brand new badlands package. 2 liter 4cyl ecoboost 250hp”

NHTSA complaint #11414378, filed 2021-04, 198 miles

“The vehicle was slowing down after leaving a stop light and within a short distance completely shut down no lights no power nothing wouldnt start to put in neutral so we can get it from the middle of traffic on a 2 lane highway. After about 15 minutes of trying to see what the issues was it turned over and we put the car in gear and pushed ot to the side of the road”

NHTSA complaint #11757286, filed 2026-08

“The rear differential went out on my Bronco Sport. Ford has issued a TSB, but has not widely promoted it. I've been told if I drive it, it could have a catastrophic failure resulting in an accident. My vehicle has been sitting at a Ford dealership for 7 weeks now and the part is not anticipated to be released to the dealership for over another month. No loaner was provided either.”

NHTSA complaint #11769362, filed 2026-10

“Driving and check engine light came on saying abs system disabled pull over immediately This was a 4000.00 repair for the sensor that should’ve been a recall as there were 5 other broncos repaired with this same issue in the shop during my repair. I was not covered u der warranty because I was 600 miles over power train warranty when this occurred. Please review for possible ford recall.”

NHTSA complaint #11773657, filed 2026-10

Related recalls

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
2026113%
2025717%
20242320%
20232113%
20227019%
202119127%

Other parts of the 2021 Ford Bronco Sport

Electrical system
212 complaintsEngine
152 complaintsBrakes
127 complaintsFuel system
124 complaintsOther or unknown
101 complaintsVisibility (wipers, defrost, mirrors)
26 complaintsEngine cooling
24 complaintsSuspension
24 complaintsSteering
16 complaintsForward collision avoidance
15 complaintsVehicle speed control
13 complaintsExterior lighting
10 complaints

← All problems reported for the 2021 Ford Bronco Sport

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