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Car and Vehicle Sounds

Engine, brakes, suspension, exhaust, and drivetrain noises. 64 diagnostic guides sorted by severity.

7 urgent 44 moderate 13 harmless
Urgent — Act Now
Car Engine: Clicking (Won't Start)
#1 cause: Dead or Weak Battery
Act Now›
Car Brakes: Grinding
#1 cause: Completely Worn Brake Pads — Metal on Metal
Act Now›
Car Starter: Clicking
#1 cause: Dead or Weak Battery
Act Now›
Car: Grinding While Driving
#1 cause: Worn Wheel Bearing
Act Now›
Jeep Wrangler: Death Wobble
#1 cause: Worn Track Bar Bushing or Ball Joint
Act Now›
Hyundai Engine: Knocking
#1 cause: Connecting Rod Bearing Failure (Theta II Engine)
Act Now›
Kia Engine: Knocking (Recall)
#1 cause: Theta II Engine Bearing Failure
Act Now›
Moderate — Investigate Soon
Car Engine: Knocking
#1 cause: Carbon Deposit Buildup on Piston Tops
Investigate Soon›
Car Engine: Ticking
#1 cause: Low Engine Oil Level or Pressure
Investigate Soon›
Car Engine: Rattling
#1 cause: Loose or Cracked Heat Shield
Investigate Soon›
Car Engine: Whining
#1 cause: Low Power Steering Fluid
Investigate Soon›
Car Engine: Squealing
#1 cause: Worn or Glazed Serpentine Belt
Investigate Soon›
Car Engine: Hissing
#1 cause: Vacuum Leak
Investigate Soon›
Car Brakes: Squealing
#1 cause: Brake Pad Wear Indicators Contacting Rotor
Investigate Soon›
Car Suspension: Clunking Over Bumps
#1 cause: Worn Stabilizer Bar End Links
Investigate Soon›
Car Steering: Clicking When Turning
#1 cause: Worn CV Joint (Constant Velocity)
Investigate Soon›
Car Transmission: Whining
#1 cause: Low or Degraded Transmission Fluid
Investigate Soon›
Car Exhaust: Rattling
#1 cause: Loose or Cracked Heat Shield
Investigate Soon›
Car Wheel Bearing: Humming
#1 cause: Worn Wheel Bearing Races and Rollers
Investigate Soon›
Car Serpentine Belt: Squealing
#1 cause: Worn or Glazed Belt Surface
Investigate Soon›
Power Steering: Whining
#1 cause: Low Power Steering Fluid
Investigate Soon›
Car Alternator: Whining
#1 cause: Worn Alternator Bearings
Investigate Soon›
Ford F-150 Engine: Ticking
#1 cause: Cam Phaser Tick (3.5L EcoBoost / 5.0L Coyote)
Investigate Soon›
Car: Noise When Accelerating
#1 cause: Exhaust Leak or Loose Heat Shield
Investigate Soon›
Car: Noise When Turning
#1 cause: Worn CV Joint (Constant Velocity)
Investigate Soon›
Car: Noise When Braking
#1 cause: Brake Pad Wear Indicators
Investigate Soon›
Car: Humming at Highway Speed
#1 cause: Failing Wheel Bearing
Investigate Soon›
Car: Squeaking at Low Speed
#1 cause: Brake Dust Shield Rubbing
Investigate Soon›
Car Undercarriage: Rattling Underneath
#1 cause: Loose or Broken Exhaust Heat Shield
Investigate Soon›
Car: Whining in Reverse
#1 cause: Normal Reverse Gear Whine
Investigate Soon›
Car: Popping When Turning
#1 cause: Worn CV Joint
Investigate Soon›
Chevy Silverado Engine: Ticking
#1 cause: AFM/DFM Lifter Failure (5.3L/6.2L V8)
Investigate Soon›
BMW Engine: Ticking
#1 cause: VANOS Solenoid or Unit Wear
Investigate Soon›
Car Differential: Whining
#1 cause: Low or Contaminated Differential Fluid
Investigate Soon›
Car Turbo: Whistling
#1 cause: Normal Turbo Spool Sound
Investigate Soon›
Car Fan Belt: Noise at Startup
#1 cause: Cold Belt Slippage
Investigate Soon›
Car Engine: Rattling at Idle
#1 cause: Timing Chain Tensioner Weak
Investigate Soon›
Car: Clunking When Accelerating
#1 cause: Worn CV Axle Joint
Investigate Soon›
Car Engine: Ticking After Oil Change
#1 cause: Air in Oil System
Investigate Soon›
Toyota RAV4: Noise When Accelerating
#1 cause: Normal 2.5L Dynamic Force Engine Sound
Investigate Soon›
Nissan CVT Transmission: Whining
#1 cause: Normal CVT Belt/Chain Noise
Investigate Soon›
Honda CR-V: Vibration Noise
#1 cause: Earth Dreams 1.5T Engine Vibration
Investigate Soon›
Car: Whining When Accelerating
#1 cause: Power Steering Pump Under Load
Investigate Soon›
Car: Roaring When Driving
#1 cause: Worn Wheel Bearing
Investigate Soon›
Car: Vibration at 60 MPH
#1 cause: Out-of-Balance Tire
Investigate Soon›
Car: Scraping Noise Underneath
#1 cause: Dragging Splash Guard or Skid Plate
Investigate Soon›
Car: Thumping When Driving
#1 cause: Flat-Spotted Tire
Investigate Soon›
Ford Explorer Engine: Ticking
#1 cause: Cam Phaser Tick (3.5L/2.3L EcoBoost)
Investigate Soon›
Chevy Equinox Engine: Ticking
#1 cause: Timing Chain and Tensioner Wear (2.4L Ecotec)
Investigate Soon›
Dodge Ram Engine: Ticking
#1 cause: MDS/Hemi Tick (5.7L V8)
Investigate Soon›
Car Suspension: Creaking Over Bumps
#1 cause: Dry or Worn Sway Bar Bushings
Investigate Soon›
Low Priority — Usually Harmless
Car Brakes: Clicking
#1 cause: Normal Pad Shift in Caliper Bracket
Usually Harmless›
Car AC: Clicking
#1 cause: AC Compressor Clutch Engaging and Disengaging
Usually Harmless›
Honda Civic Engine: Rattling
#1 cause: Normal Direct Injection Noise
Usually Harmless›
Toyota Camry Dashboard: Rattling
#1 cause: Loose Dashboard Trim Clips
Usually Harmless›
Subaru Boxer Engine: Ticking
#1 cause: Normal Boxer Engine Sound Character
Usually Harmless›
Tesla Interior: Rattling
#1 cause: Loose Trim Panel Clips
Usually Harmless›
Car Engine: Noise at Cold Start
#1 cause: Piston Slap
Usually Harmless›
Car Door: Creaking
#1 cause: Dry Door Hinge Pins
Usually Harmless›
Car: Squealing When Cold
#1 cause: Cold Serpentine Belt
Usually Harmless›
Car: Buzzing After Shut Off
#1 cause: Evaporative Emission System Purge
Usually Harmless›
Car Dashboard: Clicking Behind Dash
#1 cause: Blend Door Actuator
Usually Harmless›
Tesla Model Y: Rattling
#1 cause: Loose Interior Trim Clips
Usually Harmless›
Car: Whistling at Highway Speed
#1 cause: Wind Noise From Door Seal
Usually Harmless›