Analysis Report: Automatic Transmission (AT) (Japanese, U.S. and European Markets)

Continuing the gradual shift to multi-speed transmissions

2025/04/15

List of AT suppliers
Introduction
I. Overall trends
Ⅱ. Matrix of major AT suppliers and customer OEMs
III. Activities of major AT suppliers and in-house OEM manufacturing
IV. List of models and supplier status of AT units

List of AT suppliers

Aisin Corporation (Aisin)

JATCO Ltd. (JATCO)

ZF Friedrichshafen AG (ZF)

Allison Transmission Holdings, Inc. (Allison)

Introduction

Transmissions are a core component of a vehicle and are manufactured in-house by OEMs or by a limited number of specialized manufacturers due to their large number of parts and complex assembly.

The ATs (automatic transmissions) presented in this report are basically stepped transmissions that combine a torque converter and a planetary gearbox, but also include the following configurations that do not have either of these.

Power transmitted by a multi-disc clutch or motor instead of a torque converter
Two-shaft gearbox used instead of a planetary stage, combined with a torque converter
The above 1 is an "AT-based" structure, as shown in the green box in Figure 1 below, which is often used for hybrids, but Mercedes-Benz has been using multi-disc clutches in ICE (internal combustion engine) vehicles for many years, and Mazda has been using them from 2022 onwards.

On the other hand, the sub-transmission associated with the lower stage of AWD or CVT (continuously variable transmission), the final reduction gear installed on the axle, and the gearbox used for power taken out of the vehicle (PTO) are not included, regardless of the type.

Figure 1: Structures of the parts that interrupt and combine engine and motor power
Source: Created by MarkLines based on company announcements.

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Analysis Report: Automatic Transmission (AT) (Japanese, U.S. and European Markets)

Continuing the gradual shift to multi-speed transmissions

2025/04/15

List of AT suppliers

Introduction

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