There are a few ways to make your car quieter, but the best way to find out is to try different things and see what works best for you. Here are a few tips: -Wrap insulation around the exhaust pipes: This will help muffling the sound of the engine. -Install acoustic foam: This will help reduce noise levels and make your car more comfortable to ride in. -Install soundproofing material: This will help reduce noise levels even further. ..