I've been driving a Suzuki SX4 for over ten years, and now the fuel consumption is higher than before. When I press the accelerator, the RPM goes up, but the speed doesn't increase. I've changed the transmission oil, cleared the engine carbon deposits, and worked on the throttle and fuel injectors, but the RPM is still high while acceleration is slow. Are there any fellow car owners who have experienced similar issues?

After a major maintenance on the 2006 Accent 1.4 manual, the spark plugs, carbon canister solenoid, and throttle have been replaced, and the fuel injectors have been cleaned. With the fuel price at 7.91, it's costing 0.9 per kilometer. Is this normal? The oxygen sensor is fine!

Is it normal for a 2015 model 2.0L automatic transmission car to have the RPM around 1300 at 60-70 km/h, and when slowing down for a turn then accelerating again, the RPM suddenly rises and acceleration is slow, with the RPM at 1600 to 1700 at 60 km/h and not dropping, and sometimes after turning off the engine and restarting it behaves normally?

I have a 2007 Touran, automatic 1.8t. It jerks noticeably during acceleration. When idling while parked, the RPM intermittently drops by 100-200, and the car lights dim. What should I do? (I've previously cleaned the fuel injectors and throttle body.)

Has anyone used fuel additives for carbon deposit cleaning? Do they work well?

When I floor the accelerator on my 2.0T model, the RPM only goes up to 3000 and won't go any higher. Is this normal for everyone else's car too?

The 2017 Land Cruiser with an automatic transmission struggles to accelerate when flooring the gas pedal, with the RPM not going above 2300, causing slow acceleration. However, when using cruise control, the acceleration is faster, and the RPM can increase. What might be the reason for this?

Fellow car owners, how do you clean carbon deposits from your car? Which brand of fuel additive works well? Any recommendations?

Does adding fuel additives really help clean carbon deposits? Is it a waste of money or truly effective? Let's discuss, fellow car enthusiasts.

I've been driving a Suzuki SX4 for over ten years, and now the fuel consumption is higher than before. When I press the accelerator, the RPM goes up, but the speed doesn't increase. I've changed the transmission oil, cleared the engine carbon deposits, and worked on the throttle and fuel injectors, but the RPM is still high while acceleration is slow. Are there any fellow car owners who have experienced similar issues?

I have a 2017 automatic model with 50,000 kilometers on it. Recently, I've noticed three particularly obvious issues: 1. When starting at traffic lights, even with light acceleration, I can hear the engine howling. The fuel consumption spikes to 19.9, the engine revs up to 2000 RPM, but the acceleration is very slow. 2. When driving home from work and going up the parking ramp, I often find that even with the gas pedal pressed, there's no power. The RPM goes up to 3000, and the fuel consumption also spikes. 3. Occasionally, when starting the car, it will shake and then stall by itself. Overall, driving at speeds between 0-40 is uncomfortable, but things improve above 60, especially on the highway. Acceleration and overtaking are fine at higher speeds. It's quite frustrating. Is anyone else experiencing the same issues?