What are the solutions for excessive noise in Civic cars?

[HeidiFitz]

Civic car noise reduction solutions include: performing vibration damping and sealing treatments on the car's sheet metal, and improving the defects in the horn installation environment. Taking the 2021 Civic as an example, it is a compact car with body dimensions of: length 4517mm, width 1799mm, height 1434mm, wheelbase 2700mm, minimum ground clearance 104mm, and body weight 1343kg. The 2021 Civic is equipped with a 1.5T turbocharged engine, delivering a maximum horsepower of 177PS, maximum torque of 220Nm, maximum power of 130kW, and is paired with a continuously variable transmission.

[DelNadia]

When I drove a Civic, I was also bothered by noise issues, but gradually figured out some solutions. Worn tires can be particularly noisy—switching to Continental CC6 quiet tires made a noticeable difference. A loose engine guard can cause a humming sound; just have the repair shop tighten the screws. If the soundproofing material under the chassis is damaged, you can buy materials to patch the wheel arches yourself, solving the problem for around a hundred bucks. Leaves stuck in the AC blower can also create strange noises, so remember to clean the filter. Still hearing wind noise on the highway with windows closed? The door seals might be worn out and need replacing—it’s a DIY job that takes about half an hour. These fixes aren’t expensive but can make the cabin much quieter.

[StNatalie]

I'm particularly concerned about maintenance, as the noise level in the Civic is greatly affected by daily upkeep. Don't skimp on oil changes – full synthetic oil can make the engine sound much smoother. Tire pressure is crucial; I check it monthly, and anything above 2.5 makes the ride bumpy and noisy. Regularly inspect the chassis, as worn ball joints or bushings can cause squeaking sounds. Once I found a broken exhaust hanger, and replacing the rubber part made it quiet again. Avoid loading heavy items in the trunk – less pressure on the shock absorbers means fewer rattles. Now I make a habit of turning off the AC compressor at idle, reducing engine load and noise. Regular maintenance can really save you a lot on soundproofing modifications.

[Lorelei]

Three common solutions in the tuning community to address Civic noise issues: Switching to quiet tires is the basic step, and avoid upgrading to oversized rims. For soundproofing, choose butyl rubber material and focus on the four doors and chassis—no need to dismantle the dashboard. Modify the exhaust system with an internal backpressure muffler to maintain low-end torque while reducing noise. These modifications should be done by professional shops, as DIY attempts might worsen the noise. If the budget allows, upgrading to soft suspension significantly improves road noise reduction. However, be warned that excessive modifications may cause issues during annual inspections.