
It is worth repairing a broken car transmission. Here are the relevant details: 1. Transmission: The transmission is a component found in many cars, designed to adapt to frequently changing driving conditions while allowing the engine to operate under conditions of higher power and lower fuel consumption. Car transmissions are mainly divided into two types: manual and automatic. If the driver frequently overtakes and wishes to save fuel during such maneuvers, a manual transmission may be the preferred choice. On the other hand, an automatic transmission can make the driving process more relaxed for the owner. 2. Precautions: This transmission is a component that requires maintenance; otherwise, its performance will gradually decline, which is unfavorable for the owner.

Whether to repair a problematic car transmission depends on several factors. If the car is over ten years old or has run more than 150,000 kilometers, the cost of repairing the transmission might exceed the car's value, making it not worth the investment. My old car had a slipping transmission, and the repair shop quoted 12,000 yuan, while the used car appraisal was only 8,000 yuan—buying a new car was clearly more cost-effective. However, if your car is only three to five years old and well-maintained, replacing the entire transmission assembly could extend its life by seven or eight years, making the repair worthwhile. The key is to have a reliable mechanic diagnose the specific issue—small parts like the valve body or sensors might cost just a few thousand yuan to fix, but if the gearset is damaged, repairs can easily exceed tens of thousands and may require engine disassembly. Also, don’t forget to get a written warranty after the repair, covering core transmission components for at least six months.

As someone who just went through a major transmission overhaul, let me share my experience. My SUV suddenly lost power on the highway, and the diagnosis showed a burned transmission control module with a repair cost of 9,000 RMB. Before deciding to repair, I struggled with the dilemma: the car was seven years old but only had 80,000 kilometers, and selling it as used could still fetch 50,000-60,000 RMB. Not repairing would mean scrapping it. Ultimately, I chose to repair mainly because the dealership offered a one-year warranty on the transmission. After driving it for a year, I feel it was worth it. However, I must remind you to check the parts supply channels of the repair shop—some refurbished parts fail within three months. Additionally, repairing the transmission on an older car can expose other issues. Two months after my repair, I had to replace the driveshaft rubber coupling, costing an extra 3,000 RMB. If your car is in a similar situation, repair might be an option, but for cars over ten years old, I’d recommend scrapping and buying new.

To evaluate whether a transmission is worth repairing, focus on two key figures. The first is the repair cost: replacing a transmission with a brand-new one for an average car costs around 20,000 RMB, while a remanufactured or refurbished unit may cost 7,000-8,000 RMB. The second is the vehicle's residual value—check the selling price of the same model and year on used car apps. Simply put, if the repair cost exceeds 30% of the residual value, it's better to walk away. For example, spending 25,000 RMB to fix the transmission on a car worth 50,000 RMB makes less sense than using that money as a down payment for a new car.
During diagnosis, first have a technician confirm the fault severity: issues like a stuck oil pump or faulty sensors may cost just a few hundred RMB to fix, but damaged planetary gear sets usually require a full replacement. Also factor in hidden costs like commuting expenses during repairs—two weeks of taxis could cost over 1,000 RMB. For older cars valued below 50,000 RMB needing major transmission work, trading it in is often the smarter choice.


