Car enthusiasts, how's your water-repellent coated glass holding up? Is it normal for one side of the glass to lose its effect after 2 years?

Fellow car enthusiasts, does your car take a long time to heat up? It seems like I need to drive 8 or 9 kilometers before the water temperature is sufficient, otherwise I'm hesitant to turn on the heater. If the car is warmed up for a while, it's a bit better. Do you guys have any solutions? 🙏🙏

Fellow car enthusiasts, I have a Mazda 2 hatchback 1.3L automatic. I'm looking for a driver's side door. Where can I buy one? I need it to be original with the original paint.

My Scirocco feels jerky when shifting in S mode. At half throttle, it reaches 4000 RPM and reports an engine fault that needs repair. The EPC light is on, and it mentions something about oil pressure and the engine's maximum speed at 4000 RPM. What's going on, experts? Once I restart the car, everything seems fine (after the car is warmed up, with both water and oil temperatures up to normal levels).

Just got the car 2 days ago. When I picked it up, it showed 435, but it seems like I've only driven less than 300, with a bit over 90 left, so I went to charge it. Is this normal for city driving?

Dear fellow car owners, is it necessary to do full car sound insulation for the Vito if it's primarily used for family and for its large space, and only goes on the highway less than 5 times a year? Also, how can I modify the interior for better cost-effectiveness for family use?

1. Is it normal for the acceleration of the HiPhi Z model to be very slow, taking about 10 seconds to reach 100, when the battery is around 15%? 2. Is it normal for there to be noticeable wind noise inside the car when driving at speed? Asking fellow car enthusiasts for some answers. 🙏

Seeking advice from fellow car owners: 1. Is it normal to feel a slight vibration in the steering wheel when the air conditioning is on? 2. When using the standard + B mode, there's almost no brake dive, but when the auto hold is activated, the brake dive is quite noticeable. Do you experience this too?

Seeking advice for my first car (also just starting to drive). Budget around 400,000 RMB. Should I choose the Genesis with options or the new BMW 5 Series? I'm almost 35 and might have a child in the next 1-2 years. I feel like the Genesis doesn't have enough rear space, but I'm really attracted to its looks. The new 5 Series is quite controversial, but recently it's had significant price cuts, so I can afford the top trim, and it holds its value better. Could you guys help me decide?

Is it normal for a car to lose its battery charge after being parked for a few days?? Please share your thoughts.

Car enthusiasts, my 10-year-old 2.0 Mazda 6 has reached its mileage. Which one is better, Castrol Magnatec or Idemitsu IFG3?