Unusual Exhaust Noise During Acceleration
A Tesla Model 3 is an electric vehicle and does not have a traditional exhaust system. The noise you're hearing from the rear during acceleration is likely from the electric drive unit, rear motor, or related components such as the half shafts or bearings. It could also be a loose underbody panel or debris caught in the drivetrain.
Diagnosis Details
Possible Causes
Worn or failing rear drive unit bearings or motor bearings
Loose or damaged underbody aero shield or heat shield
Debris (e.g., rock, road debris) lodged in the rear suspension or drivetrain
Half shaft or CV joint wear
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What You Should Do
Inspect the rear underbody for loose panels or debris.
If the noise persists, schedule a service appointment with Tesla to diagnose the drive unit and bearings.
Do not ignore the noise as it may lead to more costly repairs.
Estimated Repair Cost
Inspection: $0–$100 (under warranty if applicable). Drive unit repair: $500–$2000+ depending on coverage.
Typical range: $0 – $100
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.