How to make your car’s interior super quiet?
The noise can be deafening and in India, where there are no quiet zones, ambient noise can bother you. Before we start driving the car, most of us think that engine noise is the only thing that intrudes into the cabin. However, the more you drive your car, the more you begin to learn about the different types of noises produced by several factors. While it may seem like controlling these noises isn’t up to you, it is possible to contain them and make your vehicle’s cabin a quieter place to sit inside.
Let’s start with one of the most common sources that can produce unwanted noise in the car cabin: the wind. Wind noise is greater in SUVs and MPVs than in sedans and hatchbacks – the more aerodynamic the vehicle, the less wind noise there is inside the car. However, if you are still bothered by wind noise in your vehicle, you can install weather stripping tape or seals on the door frames.
Next is road noise that filters into the cabin, which is more prominent when driving at higher speeds, either due to the type of surface or the condition of your car’s tyres. Tires with a softer compound and thicker sidewall produce less tire noise although they are more expensive and have a shorter lifespan than hard compound tires. You can also install damping material on the doors and headliner or spray on a coat of rubberized underbody coating.
Add soundproofing sheets
The addition of sound deadening material ensures that less noise filters into the cabin. There are such materials available from Dynamat that can be added to the doors, floor, roof liner and firewall. It significantly reduces wind noise. Affordable cars tend to have bad seals on the doors that let air inside the cabin. Weather stripping seals can be fitted to car door frames to ensure that a minimum amount of air enters the passenger compartment.
Parts of your car like the engine, suspension, and exhaust can also create noise. Engine noises can be controlled by using good quality synthetic oils and maintaining the vehicle from time to time, such as checks on engine mounts and the condition of powertrain components. Defective components can be replaced or rectified as necessary.
After the implication of BS6 emission standards, vehicles now have much quieter exhaust notes, especially cars. Over time, exhaust mufflers can be subject to minor pitting due to corrosion. If you begin to feel a difference in your vehicle’s exhaust note, you should have the exhaust mufflers checked and those pores and holes repaired if necessary. For suspension noise as well, the main culprits that produce unwanted sounds are the ball joints, connecting rods, shock absorber bolts and steering ends, which need to be serviced and corrected from time to time.
Finally, as a car ages, various panels inside the car, such as the interior door panels, dashboard, and parcel tray, begin to produce rattling noises. Sometimes finding the exact part where the noise is coming from becomes a difficult task. In such cases, it is best to seek advice from an expert mechanic and have these noises suppressed by adequate damping.