Just installed the KOIKEY Sound Deadener in my Honda Fit, and wow—what a difference! The factory insulation was basically non-existent, making every drive feel like a rock concert of road noise.

The mats were super easy to work with. The self-adhesive backing? Genius. No messy glue, and the paper backing made it simple to trace and cut shapes. Scissors sliced through like butter—no sticky residue clogging them up.

I focused on the roof, firewall, and areas near the exhaust. Not only is the cabin quieter now, but the car feels more solid somehow? Like it went from a tin can to a luxury ride overnight. Didn’t expect that bonus!

Haven’t tested it in the engine bay yet, but for interior use? 10/10. If you’re willing to tear apart your car’s guts (YouTube tutorials saved me), this stuff is worth every penny.

PS: Once it sticks, it STICKS. Measure twice, cut once—no do-overs!