What Causes Shaking in a Brand New Car?

[VonCassandra]

The reasons for shaking in a brand new car are: 1. Incorrect installation of engine mounting cushions, causing distortion; 2. Excessive carbon buildup on spark plugs; 3. Failure to change engine oil promptly during the break-in period; 4. Issues with the fuel system. The function of an engine is to convert thermal energy into mechanical energy by burning fuel in a sealed cylinder, which expands gases to push the piston and provide power for the vehicle. Engine types include: 1. Based on fuel usage: gasoline engines and diesel engines; 2. Based on stroke: four-stroke internal combustion engines and two-stroke internal combustion engines; 3. Based on cooling method: water-cooled engines and air-cooled engines; 4. Based on cylinders: single-cylinder engines and twin-cylinder engines; 5. Based on intake system: naturally aspirated engines, turbocharged engines, and supercharged engines.

[HazelLee]

It's really frustrating that my brand-new car is shaking. I remember encountering a similar issue when I first drove my new car last year. It turned out to be an improperly adjusted engine ignition system—spark plugs or ignition coils might have been misaligned during the break-in period, causing unstable idling. Tire imbalance is another common factor; if the wheel positions weren't calibrated properly at the factory, you'll feel strong steering wheel vibrations when driving. Additionally, overly tight suspension components like shock absorbers or loose screws can make the car wobble at low speeds, as if you're on a boat. A new car should be driven a few hundred kilometers before evaluation, but if the shaking persists, I recommend getting a free inspection at the 4S store immediately—don't wait until a minor issue becomes a major repair. Also, remember to warm up the engine before driving and avoid stomping on the accelerator during cold starts to ensure a smooth transition for new car parts.

[Bob]

My brand-new car shakes nonstop on the road, I feel like filing a complaint! I suspect the issue might be with the engine's intake system, such as a clogged air filter affecting air supply, causing squealing noises when accelerating. Overinflated tires or deformed wheel hubs are also annoying - you can do a preliminary check by feeling the wheel temperature when parked. Additionally, improper installation of the drivetrain or transmission in new cars often causes noticeable jerking during gear shifts. Don't rush to DIY repairs; it's wiser to have the dealer handle it under warranty since new cars shouldn't have such issues. Regularly inspect the chassis during maintenance and test on flat roads to reduce early wear risks.

[JaylaAnn]

New car shaking is definitely abnormal. During my inspection, I found that unbalanced tires and loose engine mounts were the main causes, which can be resolved with simple adjustments. Overly tight drive belts or lack of lubrication are also common issues, requiring professional inspection.

[HopeLynn]

The newly picked-up car vibrates, and I realize the high risk. From the details, assembly defects in the engine mounting components may cause shaking, such as loose bracket bolts, which worsen wobbling after deformation under high temperatures. Unbalanced brake discs could also lead to rhythmic vibrations, endangering high-speed stability. Don’t underestimate minor vibrations—return to the dealership promptly for a diagnostic tool scan to prevent safety issues from escalating. Advance the maintenance schedule to ensure all connection points are properly lubricated.

[LeFinley]

The new car shakes as soon as it arrives, which I see as an economical and practical issue. Engine internal carbon buildup or poor fuel flow causes the shaking. Beginners can self-check the engine oil level and the condition of the filter. Improper tire dynamic balancing is an inexpensive fix—getting it calibrated at the shop early avoids future expenses. Develop a habit of checking tire pressure daily to easily maintain the car's lifespan.