It is said that Aisin is a "gearbox boss", why doesn't Honda and Nissan use it? The reason is very simple, I have a gearbox at home, why do I have to rush to send money to competitors? Neither Honda nor Nissan's top brass will purchase Aisin's gearboxes on a large scale unless their heads are kicked in the head by a donkey.
The relationship between Aisin and Toyota
Aisin's technical strength in the field of gearboxes is very strong, but Aisin and Toyota are actually a family, Aisin was founded in 1969 by Aisin and BorgWarner joint venture, of which the Toyota Group owns 22.2% of aisin Seiki, because of this, almost all toyota models are using Aisin's gearbox. In such a situation, if Honda and Nissan use Aisin transmissions, they are basically sending money to competitor Toyota.
Aisin's "stuck neck" tactic
Because of toyota's relationship with Aisin, Aisin often makes bad moves when supplying gearboxes to Toyota's competitors. The Chinese people are more familiar with GAC Trumpchi's GS8, in 2017, the GS8 was difficult to climb to the top of the 7 SUV sales list, but because of the threat to the status of Highlander, it was necked by Aisin card, reducing the supply of gearboxes, and forced to reduce the output of Trumpchi GS8 to 7000 units / month. This has also happened to Volkswagen, which is also an important reason for Volkswagen's development of DSG gearboxes.
Honda and Nissan transmissions
If you don't have the ability to develop and produce transmissions like GAC Trumpchi, you can produce transmissions yourself, why do you want to increase profits for competitors?
Although the research and development of the gearbox is difficult, it is not a thing for the "technical control" Honda, which loves to study, seek innovation and persist in chasing dreams. Honda originally used Jetco's CVT gearbox, but after finding that Jetco's gearbox could not meet the requirements of its own model for failure rate and speed increase, Honda began to develop its own gearbox. Honda has independently developed 6AT, 8DCT and CVT gearboxes with torque converters, and Honda has developed the world's first transverse 10AT gearbox, in fact, Honda's research and development strength in gearboxes is very strong, and there is no need to rely on other suppliers.
Nissan's gearboxes almost all come from Jetco, which is also a Nissan holding company, so for Nissan, it is not necessary to use its own gearbox, and to use Aisin's gearbox is the brain pump. As one of the world's three major transmission manufacturers, Jetco supplies brands such as Nissan, Mitsubishi Automobile Industries, Suzuki, Fuji Heavy Industries, Renault, and Chrysler, with an annual supply of more than 5 million units.