AWF8G45/GA8G45AW - Faults, Problems, Repair Costs, User Reviews
The AWF8G45 transmission is an eight-speed automatic transmission manufactured by the Japanese company Aisin. This transmission is used in cars of various brands and appears under different designations: Peugeot and Citroen (EAT8), BMW and Mini (GA8G45AW), Opel (AF50-8), Volvo (TG-81SC and TG-81SD, sold under the commercial name Geartronic), and Toyota (U880). The AWF8G45 transmission features 8 gears and is designed for front-wheel drive or all-wheel drive vehicles.
Most Common Faults
The most common faults of the AWF8G45 transmission include:
- Mechanical damage, such as wear of gears, clutches, or bearings. It can be caused by excessive slip, improper operation, or poor maintenance.
- The most common cause of failure in this transmission model is damage to the C3/C4 clutch drum.
- Fluid leaks, which can be caused by damaged seals or gaskets. They lead to a drop in transmission fluid level, which can cause internal transmission damage.
- Electronic failures, such as transmission control unit (TCU) or sensor faults. They can be caused by electrical interference or mechanical damage.
Characteristic symptoms of AWF8G45 transmission faults include:
- Jerking during gear changes
- Inability to shift gears
- High engine RPM at low speed
- Squeaking, knocking, or grinding noises
If any of these symptoms occur, consult a mechanic as soon as possible. Early detection and repair of faults can prevent further transmission damage and extend its lifespan.
Below are several tips that can help prevent AWF8G45 transmission faults:
- Change transmission fluid regularly
- Avoid excessive slip
- Do not overload the transmission
- Avoid abrupt aggressive driving maneuvers
- If abnormal symptoms appear, see a mechanic
Repair cost
The cost of repairing the AWF8G45 automatic transmission can vary significantly depending on the type of fault and the extent of damage. Automatic transmissions are complex and precision systems, which affects repair costs. The repair cost depends on the specific problem affecting the transmission. Simple repairs, such as replacing damaged sensors, can be less expensive than more complex jobs, such as replacing damaged clutch plates or bearings, or even a complete transmission rebuild.
In the event of a major failure, it may be necessary to replace the entire transmission, which can cost from several to over a dozen thousand PLN. The ASB Długołęka workshop offers new AWF8G45 transmissions.
To minimize the risk of a major failure and increase transmission durability, it is important to adhere to the manufacturer recommended service schedule and use high quality fluid and filters.
User reviews
User reviews of the Aisin AWF8g45 automatic transmission vary, here are sample reviews found online:
Positive review: "The AWF8F35 transmission is one of the best automatic transmissions I have ever driven. It is very smooth and comfortable, and also economical. I recommend it to anyone looking for a transmission that will serve trouble-free for many years.."
Neutral review: "The transmission is very smooth and comfortable, and at the same time very economical. In the city I burn around 6.5 liters per 100 kilometers, and on the highway around 5 liters. The only problem I had with this transmission was clutch slip issues. The problem was resolved by replacing the clutch, but the repair cost was high. I recommend this transmission to anyone looking for a good transmission for a mid-size car."
Negative review: "I have a BMW with the AWF8G45. The transmission worked well for the first two years, but then problems started. The transmission started jerking during gear shifts, especially when overtaking. I reported the problem to the service center, but they were unable to resolve it. Finally, after three years of use, the transmission broke down completely. I had to replace it, and the repair cost exceeded PLN 20,000. I am very disappointed with this transmission. I do not recommend it to anyone"