What Causes the Abnormal Noise When Driving a Toyota Avalon?

[McHarper]

Toyota Avalon produces abnormal noise while driving due to the following reasons: 1. Aging window seals lead to reduced sound insulation, or friction between interior trim components generates noise; 2. Tire noise: A dull "thud" sound often indicates tire tread deformation, bulging, severe wear, or insufficient air pressure; 3. Suspension noise: A "creaking" sound is mostly caused by the shock absorber springs; 4. Engine noise. The Toyota Avalon is equipped with 2.0L and 2.5L engines, paired with a CVT continuously variable transmission and an 8-speed automatic transmission. The 2.0L engine delivers a maximum power of 131 kW and a maximum torque of 210 N·m, while the 2.5L engine produces a maximum power of 154 kW and a maximum torque of 250 N·m.

[Tobias]

I found that the Toyota Avalon makes abnormal noises while driving, and the most common cause is issues with the suspension system. Having driven for so many years, I've encountered various abnormal noises, such as the impact sound from body sway caused by aging shock absorbers, or the creaking sound due to loose springs when driving on bumpy roads. It could also be caused by unbalanced tires or foreign objects embedded in them, resulting in a humming sound during rotation. The braking system is also prone to problems, such as worn brake pads or loose calipers, which can produce a screeching friction sound when braking. Another possibility is loose chassis components or untightened screws, leading to abnormal noises on rough roads. I recommend starting with simple checks, such as inspecting the tire condition and suspension fasteners. If the noise persists, it's best to visit a repair shop for a comprehensive diagnosis—safety always comes first.

[LydiaLee]

I'm very interested in the mechanical aspects of cars. The abnormal noises in Toyota Avalon often originate from drivetrain issues. For example, gear wear inside the transmission or insufficient fluid can cause clicking sounds during acceleration or gear shifting. Engine accessories like loose belts may also produce squealing noises, especially when the engine is warm or idling. Another common source is loose bolts in the exhaust system, which can cause metallic clanging due to vibration. These noises typically result from component aging or inadequate maintenance, which not only sound unpleasant but also affect driving safety. I make it a habit to regularly inspect these areas and replace worn parts promptly to prevent problems. After all, maintaining good upkeep is key to reducing such noises.

[McGenesis]

As an ordinary driver, I find abnormal noises quite annoying. My Avalon once had a similar issue, most likely due to aging suspension bushings, which caused squeaking sounds when turning. Or uneven tire tread wear can lead to increased humming noise at high speeds. If the brake pads wear thin, they can also produce sharp noises during light braking. These minor issues can accumulate and make one uneasy, so I immediately took it to the shop for inspection. The mechanic said that regular checks on tire pressure and suspension condition can help detect faults early and avoid road risks.