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Transmission and drivetrainPart report

2021 Ford Bronco Transmission and drivetrain Problems

Complaints
9about this part
Share
4%of 230 total for the year
Median mileage
12,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 9 complaints about the transmission and drivetrain of the 2021 Ford Bronco, 4% of the 230 complaints for this model year. Where a mileage was given, the median is 12,500 miles. 1 a fire, 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.

“My drive shaft/coupling caught fire at the front transfer case. I was able to extinguish it safely. This is the same description as: NHTSA Recall No.: 26V236 Manufacturer Recall No.: 26S26 And the description “ Vehicle 1: 2021-2025 FORD BRONCO‘ includes my vehicle, however, my VIN/license plate number do not show this recall in effect.”

NHTSA complaint #11736856, filed 2026-05

“In November 2021, I received delivery of my new Ford Bronco 4WD Badlands vehicle. I went for a road trip with my family and friends in my new car. While driving back, the car engine light appeared on the dashboard, along with the service alert, and the car began to make noise. I pulled over and tried to restart the car, but it never started. We were in the mountains, where there was no signal for more than ten miles. We were completely stranded, along with my kids, who were 13 and 16 at the time, and one of my friends' 8-year-old daughter. …”

NHTSA complaint #11487253, filed 2022-09

“The Axle Tubes are held to the center differential with 3 x Plug Welds per side. The plug welds on our axle are weeping oil and do NOT appear to be properly welded. Upon online comparisons this is a known issue and is resulting in catastrophic failures. Ford claims that weeps are NOT covered under warranty. A weep in this location/situation means that the welding process was sub-standard and compromised.”

NHTSA complaint #11524757, filed 2023-06

“The contact owns a 2021 Ford Bronco. The contact stated that with the vehicle in park and the engine running, the vehicle inadvertently shifted into drive and accelerated up a slight incline. Upon inspection, the contact observed that the gear selector was still in park(P). No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 23V070000 (Power Train) however, the VIN was not included. …”

NHTSA complaint #11529771, filed 2023-06, 12,500 miles

“Component or system that failed or malfunctioned: The fuel delivery system, specifically the fuel pump, which is subject to an active safety recall. The recall states that fuel pump failure can result in loss of fuel pressure and flow, leading to engine stall. The vehicle is available for inspection upon request. How safety was put at risk: A sudden engine stall while driving would result in an immediate loss of propulsion and power, creating a significant risk of collision, particularly at highway speeds or in traffic. …”

NHTSA complaint #11714757, filed 2026-02

Related recalls

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
2026218%
202559%
2024810%
20232210%
20224010%
202194%
1996810%
19951112%
199478%
1993820%
1992411%
199126%
199047%
198934%
198824%
198726%

Other parts of the 2021 Ford Bronco

Engine
69 complaintsFuel system
30 complaintsElectrical system
29 complaintsOther or unknown
28 complaintsSuspension
24 complaintsBack-over prevention (rear camera)
23 complaintsBrakes
22 complaintsVisibility (wipers, defrost, mirrors)
17 complaintsLane departure
11 complaintsBody and structure
11 complaintsAir bags
7 complaintsForward collision avoidance
7 complaints

← All problems reported for the 2021 Ford Bronco

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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