What kind of transmission is 4EAT?
The 4EAT transmission is a widely recognized automatic transmission system, primarily used in Subaru vehicles. Known for its durability and reliability, the 4EAT has been a staple in the automotive world for decades. In this article, we’ll explore what makes the 4EAT unique, how it works, and why it has been a popular choice for car manufacturers and drivers alike.
Understanding the 4EAT Transmission
The term "4EAT" stands for "4-speed Electronic Automatic Transmission." As the name suggests, it is a four-speed automatic transmission that uses electronic controls to manage gear shifts. This transmission was first introduced by Subaru in the late 1980s and has been used in various models, including the Legacy, Outback, and Forester.
Unlike traditional automatic transmissions that rely solely on hydraulic systems, the 4EAT incorporates electronic sensors and actuators to optimize performance. This combination of mechanical and electronic components allows for smoother gear shifts, improved fuel efficiency, and better adaptability to different driving conditions.
Key Features of the 4EAT Transmission
The 4EAT transmission offers several features that make it stand out from other automatic transmissions:
- All-Wheel Drive Compatibility: The 4EAT is designed to work seamlessly with Subaru's all-wheel-drive (AWD) systems, providing excellent traction and stability in various road conditions.
- Durability: Known for its robust construction, the 4EAT can handle high torque levels, making it suitable for both everyday driving and off-road adventures.
- Electronic Control: The electronic control unit (ECU) monitors driving conditions and adjusts gear shifts accordingly, ensuring optimal performance and efficiency.
- Torque Converter Lock-Up: This feature improves fuel efficiency by reducing slippage in the torque converter during highway driving.
How the 4EAT Transmission Works
The 4EAT transmission operates using a combination of hydraulic and electronic systems. Here’s a simplified breakdown of how it works:
- Hydraulic System: The hydraulic system uses pressurized fluid to engage and disengage gears. This system is responsible for the physical movement of the transmission components.
- Electronic Sensors: Sensors monitor various parameters, such as vehicle speed, engine load, and throttle position. This data is sent to the ECU.
- Electronic Control Unit (ECU): The ECU processes the sensor data and determines the optimal timing for gear shifts. It then sends signals to actuators to execute the shifts.
Why Choose a Vehicle with a 4EAT Transmission?
There are several reasons why the 4EAT transmission remains a popular choice among drivers:
- Reliability: The 4EAT is known for its long lifespan and low maintenance requirements, making it a cost-effective option for vehicle owners.
- Performance: With its smooth gear shifts and compatibility with AWD systems, the 4EAT provides a comfortable and responsive driving experience.
- Versatility: Whether you’re driving in the city, on the highway, or off-road, the 4EAT adapts well to different driving conditions.
Conclusion
The 4EAT transmission is a testament to Subaru's commitment to innovation and quality. Its combination of electronic controls, durability, and compatibility with AWD systems has made it a trusted choice for drivers around the world. If you own a vehicle equipped with a 4EAT transmission, regular maintenance and proper care will ensure it continues to perform at its best for years to come.
Frequently Asked Questions
What is 4EAT transmission?
4EAT stands for Four-Speed Electronic Automatic Transmission. This simply means that your vehicle is equipped with an automatic transmission with four gears.
Is CVT better than automatic transmission?
A CVT is lighter than a traditional automatic, and this, combined with the smoother operation, helps to improve the fuel efficiency of vehicles that come equipped with a CVT. Because of the lack of gearing, it is easier for CVT vehicles to find and maintain an ideal torque ratio as well.
Which Subaru has CVT transmission?
Since 2014, the Lineartronic® CVT has been standard in all automatic Subaru models and trims (except the Subaru BRZ).
What are the 4 types of Subaru transmissions?
List of Subaru transmissions
- 1.1 Three-speed. 1.1.1 3AT. 1.1.2 3AT 1st revision. 1.1.3 3AT.
- 1.2 Four-speed. 1.2.1 ACT-4 or VTD. 1.2.2 4EAT.
- 1.3 Five-speed. 1.3.1 5EAT.
- 1.4 Six-speed. 1.4.1 6EATT. 1.4.2 A960E.
What is the strongest transmission in Subaru?
The 6-speed STI box was designed by Subaru with motorsport in mind. It is by far the best and strongest gearbox Subaru have ever made, and with the highest level of operability. The six-speed gear set is nearly twice the size of the 5-speed and twice as strong.
What transmission is best for towing?
Automatic Transmissions: Automatic transmissions are the most common type of transmission for towing. They offer convenience and ease of use, making them ideal for those who aren't experienced with manual transmissions.
What Subaru models have transmission problems?
Affected models include:
- 2010-2015 Legacy.
- 2010-2015 Outback.
- 2012-2015 Impreza.
- 2013-2015 Crosstrek.
- 2014-2015 Crosstrek Hybrid.
- 2014-2015 Forester with 2.5-liter four-cylinder engine.
- 2014-2015 Forester with turbocharged 2.0-liter four-cylinder engine.
- 2015 WRX 2.0.
What years did Subaru have CVT problems?
The models and years that were affected mainly by transmission issues are:
- Crosstrek, 2013 – 2015.
- Crosstrek Hybrid, 2014 – 2015.
- Forester (2.0 and 2.5 liter engines), 2014 – 2015.
- Impreza, 2012 – 2015.
- Legacy, 2010 – 2015.
- Legacy 3.6L V6, 2015.
- Outback, 2010 – 2015.
- Outback 3.6L V6, 2015.
What year did Subarus have transmission problems?
Although it is common to have premature transmission failure on some Subaru models built between 2012 and 2017, Subaru had stated that these vehicles had defects in their transmissions when they were manufactured.
How long does a 4 speed automatic transmission last?
Manufacturers have determined that the life of the transmission (not the car's, or your, lifetime) is about 150–160K miles without fluid change. If you want your car to last longer than that, or have any value when you go to trade it in, change that fluid.
