What Transmission Do I Have?: How to Identify Common Automatic Transmissions

Introduction

Automatic transmissions are a crucial part of a vehicle's drivetrain. They are responsible for transmitting power from the engine to the wheels, allowing the vehicle to move forward or backward. However, not all automatic transmissions are created equal. Different car manufacturers use different types of automatic transmissions, and each type has its own unique features and characteristics. In this article, we will discuss how to identify common automatic transmissions and what makes each type unique.

Types of Automatic Transmissions

There are three main types of automatic transmissions: conventional automatic, continuously variable, and dual-clutch.

• Conventional automatic: This type of automatic transmission uses a planetary gear set to change gears. It has a set number of gears (usually 4-8) and shifts between them based on the vehicle's speed and load. Conventional automatic transmissions are the most common type of automatic transmission.
• Continuously variable: This type of automatic transmission uses a belt or chain and pulleys to change gears. It does not have set gears, but instead, it can continuously change the gear ratio to provide the best balance of power and efficiency. Continuously variable transmissions are becoming more common in newer vehicles.
• Dual-clutch: This type of automatic transmission uses two clutches to change gears. It can pre-select the next gear, allowing for faster and smoother gear changes. Dual-clutch transmissions are often used in high-performance vehicles.

Identifying Conventional Automatic Transmissions

The best way to identify your automatic transmission is by the bolt pattern on the pan.  There are many charts out there, but here is an example of one.

Conventional automatic transmissions are the most common type of automatic transmission. They are found in a wide range of vehicles, from economy cars to luxury sedans. The easiest way to identify a conventional automatic transmission is by the gear selector. If the gear selector has a PRNDL (Park, Reverse, Neutral, Drive, Low) configuration, it is a conventional automatic transmission.

Identifying Continuously Variable Transmissions

Continuously variable transmissions are becoming more common in newer vehicles. They are often found in hybrid or electric vehicles due to their ability to provide a smooth and efficient driving experience. To identify a continuously variable transmission, look for a gear selector that does not have set gear positions. Instead, it may have a series of letters or numbers that indicate the vehicle's driving mode.

Identifying Dual-Clutch Transmissions

Dual-clutch transmissions are often used in high-performance vehicles due to their ability to provide fast and smooth gear changes. To identify a dual-clutch transmission, look for a gear selector that has two sets of gear positions (such as P-R-N-D-S). The S position stands for Sport mode, which allows for more aggressive driving.

Conclusion

Identifying common automatic transmissions is important for understanding how your vehicle operates. By knowing what type of automatic transmission your vehicle has, you can better understand its unique features and characteristics. Whether you have a conventional automatic, continuously variable, or dual-clutch transmission, each type has its own benefits and drawbacks. By understanding these differences, you can make informed decisions about your vehicle's maintenance and driving habits.