If you’re looking to soundproof your bedroom from the diesel car noise, there are a few things you can do. First, try to seal any cracks or gaps in the walls and ceiling with caulk or foam insulation. This will help to block out noise from outside and make it harder for the engine noise from the car to seep into the room. You can also buy soundproofing materials like acoustic foam or fiberglass insulation and install them yourself. Just be sure to measure your room carefully and choose the right type of insulation for your needs. Finally, consider using earplugs or headphones when you’re trying to sleep in order to block out all of the noise from outside. This will help you get a good night’s sleep and reduce your chances of experiencing any health problems related to diesel car noise ..