Will running the air conditioner on a Kia Seltos for 2 hours while stationary damage the car? I've heard that the manual says idling is bad for the car?

I own a 2014 SsangYong Korando, 2WD high trim, 2.0 gasoline. Recently, the check engine light occasionally turns on with the error code indicating a misfire in cylinder 1. Sometimes it turns off by itself. I've swapped spark plugs between cylinder 1 and 2, ignition coils between cylinder 1 and 3, and even swapped the injectors. I planned to use elimination to check if it's the injector issue, but after each swap, the misfire code for cylinder 1 still comes back eventually! The engine idles with slight vibrations, but I don't feel any power loss on the highway—it easily goes over 160 km/h. Later, I measured the cylinder pressure: cylinder 1 is at 8 kg, while the others are over 10 kg. After researching online, I suspect it's an exhaust valve issue. Now I'm really torn. Should I just let it be, or go for a major repair? I read online that some people can fix it by opening the cylinder head without removing the engine. But the local big auto shop is no more, and the private mechanic suggests removing the engine, which I really don't want to do—worried it won't fit back as perfectly as the original. It's stressful because I bought this as a first car for my father, who has loved cars all his life, and now this happens. I've been to various places without a clear diagnosis. Some say it's slight cylinder wear, some say valve leakage, and others mention cylinder head design flaws. Any advice from fellow Korando owners on how to solve similar issues would be greatly appreciated!

Is there a significant difference in driving experience between the 2.5 and 3.0? I'm planning to buy a used Viano and later get a towed RV. Will a 2.5 engine struggle with towing a trailer? Normally, the 2.5 should consume more fuel compared to the 3.0, but since the car often idles for 1-2 hours waiting for people, would the 2.5 be more fuel-efficient in this situation?

If the car wasn't completely stopped before shifting into reverse and you heard a grinding noise, it could potentially cause damage. It's generally recommended to ensure the vehicle is fully stationary before changing gears to avoid any harm to the transmission system.

Hey fellow car enthusiasts, I've heard that the T8's engine noise inside the car is quite loud when it's running. How bad is it, and is it tolerable?

I have an HS7 at home. I'm considering buying a new energy SUV. I don't go out often, but when I do, it's usually a long trip (at least 2 hours). My friends have recommended brands like Li Auto, NIO, and AITO, but I'm thinking about the HS9. However, I've heard it doesn't have a good reputation. I'm here to seek advice on the following aspects and would appreciate genuine feedback and evaluations: charging speed, charging pile installation, material quality, human-vehicle interaction, intelligence, maintenance, and actual range. Thank you, everyone.

I've heard that the car's infotainment system is quite bad. Does it have a Sentry Mode? Carbon fiber repairs are so expensive, I really hope it can catch hit-and-runs.

Will running the air conditioner on a Kia Seltos for 2 hours while stationary damage the car? I've heard that the manual says idling is bad for the car?