Lineartronic
Subaru motor vehicles have used manual, conventional automatic, and continuously variable (CVT) transmissions. Subaru manufactures its own manual and CVT transmissions (for non-Kei cars). Since the 1970s, all Subaru conventional automatic transmissions have been Jatco designs adapted to Subaru specifications. Since the 2014 model year, the conventional automatic transmissions in North American-spec Subaru vehicles have been replaced with Lineartronic CVTs (with some exceptions such as Outbacks with the 3.6 liter engine).
All of Subaru's three speed automatic transmissions were made by Jatco.
The 3EAT was an electronically controlled 3AT with available Single-Range 4WD.
Subaru built their own four-speed automatic transmission based on the old Jatco design. It was available in FWD and Full-time awd.
Subaru uses two types of traction delivery systems, called Active Torque Split, or the performance oriented Variable Torque Distribution, called VTD. Active Torque Split has a front axle bias of 60:40 (90:10 in 1993-2009 4EAT Legacys/Libertys), and sends torque to the rear wheels when front traction loss is detected. The first system is the more commonly used setup used on most Subaru products. VTD has more of a rear axle bias varying in deployment ratios of 45:55. VTD is usually found in performance models equipped with a turbocharger and VDC models. Active Torque Split and VTD are utilized on transmissions with at least 4 gears, or the 4EAT and 5EAT.
This transmission was released in 1988 for use in the Subaru XT6 and Leone Touring Wagon. The bellhousing and input shaft were changed for the Subaru EJ engine, but this transmission is still in use today with only minor changes.
The Ford Motor Company also uses a transmission on some Ford, Kia Motors, Mercury, and Mazda products called the F-4EAT, which shares some similarities with the Subaru, since they are both manufactured by Jatco. The Nissan Pathfinder has also used this transmission in the past with an external transfer case attached.
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