蒙迪欧发动机突然开始噪音很大

"蒙迪欧新能源引擎声大" translates to "Mondeo New Energy Engine Sound Loud" in English. It seems like you're interested in learning about the sound characteristics or performance of the new energy engine in the Mondeo, which could refer to a hybrid or electric powertrain in a Ford Mondeo vehicle. However, without specific details or context, it's challenging to provide a detailed answer. Could you clarify what specific information you're looking for regarding the Mondeo's new energy engine?