SUBARU 31000AG780 Automatic Transmission TV1B4MW7AA 131K 8764

( Manufacturer Part Number: 31000AG780 ), ( Items Included: Internal Harness, Torque Converter ), ( Transmission Speeds: 4 Eat 4 Speed ), ( Vintage Part: No ), ( Type: Automatic Transmission ), ( Country Of Origin: Japan )

Review SUBARU Automatic Transmission 131k fits WRX 2006–2007

The **Subaru 31000AG780 (2006-2007 WRX with Automatic Transmission, TV1B4MW7AA, 8764)** is a meticulously engineered, high-performance compact sports sedan that embodies Subaru s legendary blend of rally-inspired capability and cutting-edge automotive innovation. Built upon the robust **EJ253** inline-5 engine architecture, this model delivers a potent yet refined powerplant that produces a smooth yet spirited **265 horsepower** and **258 lb-ft of torque**, making it one of the most capable automatic-transmission WRX models of its era. The **TV1B4MW7AA** transmission is a refined, six-speed automatic with a **linearly tuned shift strategy**, ensuring crisp, responsive gear changes that minimize lag while maintaining the WRX s signature driving dynamics. This transmission is paired with Subaru s **Symmetrical All-Wheel Drive (AWD) system**, which distributes power dynamically to all four wheels via a **viscous coupling** and **limited-slip differential**, allowing for exceptional traction in both dry and wet conditions an attribute that was particularly prized in the WRX s heyday as a rallycross and street-legal performance machine.

Under the hood, the **EJ253 engine** is a masterclass in balance, featuring a **forged crankshaft, high-flow cylinder head, and a robust turbocharger system** that ensures reliability and performance without excessive stress. The **2006-2007 WRX automatic** models were part of a transitional period where Subaru refined its turbocharging approach, moving away from the earlier **EJ252** s more aggressive tuning while retaining the **2.5-liter displacement** and **intercooled forced induction**, which contributes to its signature growl and exhilarating throttle response. The **8764** designation in the VIN indicates a **base-level WRX automatic**, though it retains the same **20-inch alloy wheels, sport-tuned suspension, and Brembo front brake system** as its manual counterparts, ensuring a firm, engaging ride that rewards precise handling.

The **TV1B4MW7AA transmission** is a standout feature, offering a **smooth yet sporty shift feel** that works harmoniously with the WRX s **multi-link rear suspension** and **adjustable MacPherson struts**, allowing for a **neutral, well-balanced stance** that enhances both comfort and performance. Subaru s **AWD system** is particularly noteworthy, as it provides **near-perfect weight distribution** and **exceptional cornering grip**, making this WRX a joy to drive on both twisty roads and straightaways. The **automatic transmission** also includes a **manual-shift mode (Tiptronic)**, which allows drivers to engage in paddle-shift control for a more engaging driving experience, bridging the gap between fully automatic convenience and manual-transmission precision.

Inside, the cabin of the **2006-2007 WRX automatic** retains the **sporty, driver-focused layout** that Subaru is renowned for, with **recaro-style seats, a low-slung dashboard, and a **6-speed automatic shifter** that sits comfortably within reach. The **infotainment system** features a **CD player, auxiliary input, and a basic climate control interface**, though it lacks modern connectivity an intentional choice that keeps the focus on driving rather than distractions. The **steering wheel** is wrapped in **sporty leather or Alcantara**, and the **instrument cluster** provides clear, analog-style gauges that offer real-time feedback on speed, RPM, and fuel economy, ensuring the driver remains connected to the car s performance.

For those seeking a **high-performance, all-weather-capable WRX**, this **2006-2007 automatic model** represents an excellent balance of **power, practicality, and Subaru s legendary AWD prowess**. While the **manual transmission** versions are often favored by purists, the **TV1B4MW7AA automatic** offers a **convenient yet spirited** alternative that doesn t compromise on the WRX s core identity. Whether tackling **wet-weather rallycross tracks, spiraling mountain roads, or daily commutes**, this model stands as a **testament to Subaru s engineering brilliance**, delivering a **thrilling yet refined** driving experience that remains unmatched in its class.

### **Pros and Cons of Buying a 2006-2007 Subaru WRX (31000AG780, TV1B4MW7AA, 8764) with Automatic Transmission**

1. **Strong Performance** The 2006-2007 WRX (with the 2.5L FB turbo engine) produces around **260-280 horsepower** and **260 lb-ft of torque**, making it a capable turbocharged sedan. The automatic transmission (CVT in later models, but this appears to be a traditional automatic) allows for smoother power delivery compared to a manual.

2. **Subaru s AWD System** The Symmetrical All-Wheel Drive (AWD) provides excellent traction in various conditions, including snow, rain, and off-road light trails. This is a significant advantage over FWD or RWD cars.

3. **Reliability (for its class)** Subarus are known for their durability, especially in harsh conditions. The FB engine (when properly maintained) can last well beyond 200,000 miles with regular servicing.

4. **Aftermarket Support** The WRX has a strong aftermarket community, meaning parts (turbo kits, suspension upgrades, exhaust) are widely available. Tuning potential exists, though the automatic transmission may limit some performance mods.

5. **Comfortable Ride** The WRX is designed for daily driving, with a relatively smooth ride (though sport-tuned suspension can be firm).

6. **Resale Value (for a JDM WRX)** Japanese Domestic Market (JDM) WRXs, especially well-maintained ones, hold value better than some domestic counterparts.

7. **Fun to Drive** The turbocharged engine and AWD make it engaging, though the automatic may feel less connected than a manual.

---

1. **Transmission Issues (CVT vs. Traditional Auto)**

- If this is a **CVT (Continuously Variable Transmission)**, it can be less reliable than a traditional automatic, especially in high-performance applications. CVTs are known for overheating and failing prematurely if not maintained properly.

- If it s a **conventional automatic**, older Subaru automatics (pre-2010) can be prone to slipping or rough shifting, requiring frequent fluid changes.

- The **TV1B4MW7AA** code suggests a **CVT**, which may not be ideal for heavy driving or towing.

2. **Turbocharger Reliability** The FB engine s turbo can fail if not maintained (oil changes, turbo cleaning). A blown turbo is expensive to repair.

3. **Fuel Economy** The WRX is not fuel-efficient by modern standards, averaging **18-22 MPG combined** (worse with a CVT). Expect higher running costs.

4. **Maintenance Costs** Subarus require **regular oil changes (every 5,000 miles)**, timing belt replacement ( $1,000 at 100K miles), and potential turbo upgrades if pushing performance.

5. **Rust Concerns** Older Subarus (especially in snowy/salty climates) can develop rust in the wheel wells, undercarriage, and frame. A thorough inspection is critical.

6. **Depreciation** While JDM WRXs hold value, they are still **not as valuable as newer or more rare models** (e.g., 2014 WRX STI). Expect to spend more on repairs over time.

7. **Limited Comfort for Daily Use** The sport-tuned suspension and turbo lag can make it less ideal for long commutes compared to a more refined sedan.

8. **Potential Modding Limitations** If you plan to tune it, a **CVT may not handle high power well**, leading to overheating or failure. A manual transmission is often preferred for serious mods.

---

This **2006-2007 Subaru WRX with an automatic transmission (likely a CVT)** is a **fun, capable turbocharged AWD car** that can be great for enthusiasts who prioritize driving dynamics over daily comfort. However, **reliability concerns (especially with the CVT), higher maintenance costs, and fuel inefficiency** make it a **high-risk purchase** unless you are prepared for potential issues.

If you **inspect it thoroughly** (check turbo, transmission fluid, rust, and service history), it could be a **good project car** for someone comfortable with mechanics. But if you want **a more reliable, low-maintenance daily driver**, consider a **later-model WRX (2011 ) with a manual transmission** or a **different turbocharged sedan** (e.g., Honda Civic Type R, Mazda3 M-Sport).

- You **inspect it professionally** (turbo, transmission, rust, service records).

- You are **prepared for potential CVT or turbo issues**.

- You **don t mind higher fuel and maintenance costs**.

- You **plan to keep it in good condition** (regular oil changes, turbo care).

- You want a **reliable, low-maintenance daily driver**.

- You **don t have mechanical experience** to handle potential repairs.

- You **prioritize fuel efficiency** over performance.

- You **plan to heavily modify it** (CVTs struggle with high power).

**Final Verdict:** This WRX can be a **great car for the right buyer**, but it s **not a plug-and-play purchase**. If you re willing to put in the effort, it s a **fun, capable AWD turbo sedan** otherwise, look for a **more modern or manual-equipped alternative**.

Details:

It was tested prior to removal. It is clean and in good working condition, but slightly dusty from being dry storage. This OEM 4EAT Automatic Transmission was removed from a 2006 Subaru WRX 131k miles.

part #: 31000ag780 prices

• $749.95-$991.10

specifications autotransmissionsgo:

• for models: Wrx
• for makes: Subaru
• for years: 2006-2007
• mpn: 31000ag780
• items included: Internal Harness, Torque Converter
• transmission speeds: 4 Eat 4 Speed
• vintage part: No
• type: Automatic Transmission
• country of origin: Japan

general autotransmissionsgo:

• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission
• condition: Used

payments autotransmissionsgo:

• wallet: Google-pay
• credit card: Visa
• other

offer autotransmissionsgo:

• started: June 2, 2026
• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 1

returns autotransmissionsgo:

• policy: No Returns

seller autotransmissionsgo:

• city: Alpharetta, Georgia
• # reviews: 2699
• rating: 100.0%

shipping autotransmissionsgo:

• cost: $299.99
• service: Flat Rate Freight
• type: Fixed
• class: Freight

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