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Why after hitting a bump your car now makes loud banging noise coming from underneath?

1. Damaged shock absorbers or struts: If your car's shock absorbers or struts are damaged, they can no longer properly absorb the impact of bumps, causing them to make a banging noise.

2. Loose or damaged suspension: If your car's suspension is loose or damaged, the components may bang together when you hit a bump, creating loud noise.

3. Broken or damaged exhaust: If your car's exhaust system is broken or damaged, it may rattle or bang against other components, causing loud banging noise when you hit a bump.

4. Driveline issues: If there are problems with your car's axle or driveshaft, such as worn-out universal joints, it can make a banging noise when you hit a bump.

5. Damaged engine or transmission mount: If your car's engine or transmission mount is damaged, it can cause a banging noise when you hit a bump, as the engine or transmission moves more freely.

If you're hearing loud banging noise from underneath your car after hitting a bump, it's important to have your car inspected by a professional mechanic to determine the exact cause and get the necessary repairs done. Ignoring these noises could lead to further damage or even accidents, compromising your safety and the performance of your vehicle.