What Causes an Automatic Transmission Car to Suddenly Stall at a Traffic Light?

[Robinson]

The main reason is the use of low-quality fuel, which causes engine carbon buildup and stalling. Here are the specific reasons: Poor Fuel Quality: Automatic transmission models do not easily stall, while manual transmission models may stall frequently due to insufficient driving skills. However, it is not impossible for automatic transmission cars to stall. The main reason is the use of low-quality fuel (many gas stations sell impure fuel for excessive profits), leading to engine carbon buildup and stalling. Driving Skills: Additionally, for new cars (automatic transmission), the main cause of stalling is insufficient driving proficiency. Fuel System Issues: Another possibility is problems with the car's engine or fuel system. However, for new cars, the likelihood of engine-related issues is low, and most cases are due to fuel system problems. For older models, aside from insufficient driving skills, stalling can also be caused by using substandard fuel, leading to engine carbon buildup and other related issues.