Hey guys, just wanted to ask if it's normal for the engine to be noisy. I've always done maintenance at the 4S shop. This car hasn't been driven for a long time, and suddenly it makes a humming noise when revving from 1800 to 2200 RPM. Is this normal? Please go easy on me, I haven't driven in a while. [Shocked]

I'm looking to buy a 2012 Acura MDX for personal use. I want a vehicle in excellent condition with original parts and paintwork—preferably one that hasn't had any screws touched. My interest in this car is genuine, driven by sentiment and appreciation for its design. I've always thought it looks stylish, and I feel that driving an Acura reflects a unique and tasteful sense of style.

Registered in November 2015, 1.5T Luxury version, driven 100,000 km. Recently, when accelerating a bit too hard, it feels like it shifts to neutral; the engine revs, but the dashboard still shows D gear. If I release the gas pedal and wait for a second or two, then accelerate slowly, it goes back to normal. I can't accelerate suddenly, only gradually. Has anyone else experienced this problem? It's been repaired several times but still not resolved.

I haven't driven my Changan for half a month due to a business trip. Today, before driving, I checked a few tires and they looked fine, not flat. After driving about 20 kilometers, the dashboard suddenly showed a tire pressure warning. I got out to check but didn't find anything wrong with the tires. What could be the issue, guys?

My 2017 MG GS automatic luxury version has been driven over 108,000 kilometers in five years. A few days ago, while driving on the highway, [when accelerating uphill and pressing the gas pedal deeply, the power suddenly disappeared. I could only hear the engine revving without moving forward]. I checked and confirmed it was in D gear, tried switching to S gear but it didn't help. After turning on the hazard lights to let the cars behind pass, I pulled over, switched to neutral, and then back to D gear, and it could drive normally again. I don't know what the issue is. Could any knowledgeable teachers or friends advise? Thanks [smile].

The tire pressure monitoring system suddenly gave an alert, but the tire pressure is normal. I drove 100 kilometers and it still hasn't reset. How can I fix this?

I've had my car for four and a half years and it's only done 36,000 km. It's a 2019 model with the 4J11 engine. Recently, when I start it cold, the engine struggles a lot. The RPM doesn't go up immediately, and the needle wobbles between 500 and 1000 for a few seconds, making it feel like it's about to stall. Then the RPM suddenly jumps to 2000-3000 before settling back to normal idle after a few seconds. There are no warning lights, and once it's running, everything seems normal. I've cleaned the carbon buildup and throttle, and checked the intake for leaks, but the issue persists. I'm not sure what to check next. What should I look into?

When the suspension is raised to its highest level, after parking and turning off the engine, the vehicle sometimes lowers to a normal height. I haven't activated the easy entry/exit feature, and it doesn't lower immediately after turning off the engine. Sometimes it doesn't lower at all, while other times it lowers on its own.

I bought a 2007 1.6 automatic luxury model for 16,000 in 2022. It was noisy and not easy to drive, so I ended up spending 12,000 on it gradually. I replaced the shock absorbers, engine mounts, stabilizer bar, light bulbs, bearings, and cleaned the engine—pretty much everything that needed fixing. It's much better to drive now and feels like it can last a few more years. I have to say, the parts are really cheap. The city fuel consumption averages 8.8, and I drive pretty aggressively.

I have a 2018 model car registered in March 2019. It has now reached 105,000 kilometers, and I haven't changed the transmission oil. The fuel consumption displayed has always been at 14. [Shocked] I have a heavy foot. Has anyone changed the transmission oil? Where did you get it done, and how did it turn out?

The car has been driven for 5 and a half years, with 94,000 kilometers on it. I've always wanted to switch to 22-inch wheels. Since I haven't really thought about changing cars anytime soon, I want to hear your opinions. Do you think it's still worth spending the money? There shouldn't be any issues driving with 22-inch wheels, right?