Jetta 1, 6 displacement has no strength to open a mountain road.

Check whether the clutch slips, whether the throttle valve is seriously carbon-deposited, whether the working signal of the throttle position sensor is abnormal, whether the three-way catalyst on the exhaust pipe is blocked, whether the intake filter is blocked, and whether the spark plug and the high-voltage line are aging and leaking. If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.