How to distinguish between three-cylinder and four-cylinder engines in the BMW X1?

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To distinguish between three-cylinder and four-cylinder engines in the BMW X1, you can observe the balance force. A three-cylinder engine is less balanced, while a four-cylinder engine is more stable. Here are specific methods to determine the number of cylinders in a car's engine: 1. Displacement: If the engine displacement is below 1L, it is generally a three-cylinder engine. If the displacement is around 2.5L, it is usually a four-cylinder engine. For displacements around 3L, it is typically a six-cylinder engine. A displacement of around 4L usually indicates an eight-cylinder engine, and a displacement above 5L generally means a twelve-cylinder engine. 2. Spark plugs: Generally, the number of spark plugs corresponds to the number of cylinders in the engine. This method applies to gasoline engines. 3. Ignition coils: The number of ignition coils usually matches the number of cylinders in the engine. This method is suitable for diesel engines.