Has anyone with a T-Roc experienced their car automatically braking when driving at around 30 km/h?

I'm a newbie... Can I ask how to drive gently to save fuel? I have a 2013 automatic GLS 2.0, and I can only get about 450 km per tank (-̩̩̩-̩̩̩-̩̩̩-̩̩̩-̩̩̩___-̩̩̩-̩̩̩-̩̩̩-̩̩̩-̩̩̩). I haven't been on the highway, usually just driving in the city at around 50/60 km/h, and on national roads at 80 km/h, never accelerated to 100 km/h...

Hello everyone, I have a Mazda 5 with a 5-speed automatic transmission that has driven 178,000 kilometers. There's a shaking sensation when driving at 50 km/h and 70 km/h. What could be the issue?

Has anyone experienced this: when driving normally and approaching a traffic light, you brake and almost come to a stop but not completely, and at around 10 mph the RPM fluctuates while the gear has already dropped to second gear?

Is the engine of the 2018 automatic model noisy while driving? Has anyone experienced something similar?

Is it normal for the Sunny to have loud noise at around 60 km/h?

Has anyone experienced noise at 120 km/h with the 2013 4WD flagship model? It sounds like it's coming from the rear of the vehicle.

Does anyone experience occasional jerking or strong drag while driving the 2021 Outlander at around 70 km/h? It's like tapping the brakes a few times. Have you encountered this issue?

Help, everyone! Has anyone experienced this? While driving, the dashboard suddenly shows "brake," and the car brakes automatically, even though there's nothing in front.

After changing the transmission oil at 80,000 km on a 2014 Tiida, there is a fluctuation in the RPM from 2000 to 2200 when driving at around 120 km/h, and the car feels jerky. I went to the 4S shop, but the transmission didn't report any errors. Has anyone else experienced the same issue?

Has anyone experienced a noise from the front right wheel, like a screeching sound, especially when lightly pressing the brakes or driving at 20-30 km/h after braking? The noise is very sharp.