Sometimes when accelerating at low speeds, the engine revs but doesn't increase speed. What could be the reason?

Mitsubishi Galant with automatic/manual transmission, when put in gear, the idle speed is low and it seems like it's about to stall. What could be the reason? Thanks, experts.

The check engine light is on, indicating an engine emission fault, but the DPF regeneration indicator is not lit. Holding the regeneration button doesn't work, and sometimes the vehicle doesn't accelerate properly. What could be the reason for this? Any ideas, everyone?

The fan on my Sharan sometimes doesn't turn on even when the temperature is high. What could be the reason? Any advice?

Good morning, has any owner experienced the situation where the car doesn't move without accelerating after the annual inspection, and the fuel consumption increases? What could be the reason for this?

When driving, if the car suddenly doesn't respond when you press the accelerator, and even flooring it doesn't increase the RPM, but releasing and pressing it again solves the issue, this could be a problem. When starting on a steep slope, if the car feels powerless and sometimes can't climb, requiring several attempts to increase RPM, there might be an issue to address.

Engine shows fault code, acceleration is weak, what could be the reason?

What could be the reason for the Haval H2's push-start sometimes working and sometimes not?

My car is a 2013-2015 model Jetta with a 1.6-liter engine. Sometimes when starting the car, the engine revs low, leading to failure to start properly. Normally, when a car starts, the engine speed should be over a thousand RPM before settling down to idle speed. However, sometimes my car starts at 800 RPM, feeling like it's about to stall. The battery is newly replaced, and tests show no issues with it.

In the morning, when starting the vehicle and driving at low speeds, it occasionally stalls. I've already cleaned the throttle and injectors, but it still stalls sometimes. If the speed picks up, it doesn't stall. What could be the reason? 🤦‍♂️

When lightly pressing the accelerator at low speeds, there's a slight jerk, and when the RPM drops below around 1100, there's a dragging feeling. What could be the problem?