Ford Recalls Early Mustang Mach-E SUVs Over Fracturing Rear Differential Pinion Shaft

The Ford Motor Company has identified a safety concern that may affect 2021 through 2023 model year Mustang Mach-E sport utility vehicles. In the subject crossovers, bending fatigue could result in a rear differential pinion shaft failure.

Such an event would also lead to a sudden loss of motive power, as well as unintended vehicle movement when park is requested if the parking brake is not applied. The root cause behind the bending fatigue remains under investigation as of this writing. BorgWarner's Mexican subsidiary is listed as the supplier of the primary drive unit assembly, which is called LJ9P-7P500-A in the parts system.

To Ford's best knowledge, affected vehicles were produced between May 3, 2020, and December 15, 2023, at the Cuautitlan assembly plant in Mexico. Inaugurated in 1964, said facility operated as an engine and component manufacturing site in the early days. Cuautitlan expanded to vehicle assembly in 1970.

Once synonymous with trucks, Cuautitlan formally wrapped Fiesta production in 2019 to clear the floor in preparation for a complete retooling. Its full-electric transition was completed in 2020 with the introduction of the Mustang Mach-E, a compact-sized electric sport utility vehicle based on a platform derived from the C2 of the Escape and Bronco Sport.

The facility currently handles Mustang Mach-E production exclusively. In addition to stamping and vehicle assembly, the complex further boasts a highly automated sub-facility tasked with building the lithium-ion battery packs. Regarding the BorgWarner-supplied electric drive units, Ford started looking into the recall condition in March 2026.

Prompted by a failed rear diff assembly from a Euro-market 2023 model, Product Development and the Critical Concern Review Group conducted a field data analysis to identify additional reports. To date, Ford has received 62 warranty claims, 14 GCQIS reports, 4 GCCT reports, and 2 European white alerts related or potentially related to said condition.

Detroit's second-largest automaker isn't aware of any accidents caused by the described condition. Dealers are to inspect and either repair or replace, as necessary, the subject parts. There will be no charge for this service. The repair or the replacement differential assembly will include a more robust differential pinion shaft.

Owners and lessees will be notified by first-class mail no later than July 17, 2026, with interim letters. The planned remedy notification dates are December 28, 2026, through December 31, 2026. Curiously enough, the NHTSA expects to upload the list of affected vehicle identification numbers in December as well. Affected vehicles feature VINs that begin with 3FM.

Internally designated CX727, the Mustang Mach-E is also produced in China by the Changan-Ford joint venture. Presently advertised by Ford in the United States of America for the 2026 model year, the compact zero-emission crossover is $37,795 from the outset, before destination and other taxes.

Customers are presented with four trims, beginning with the Select and Premium. Leveling up to the GT results in greater performance and more aggressive styling, whereas the Rally builds on the GT with a bit of all-road capability. Both of the latter trims come with dual-motor AWD by default.