Engine knocking sound under acceleration in M4 Competition

Knocking noise heard when accelerating hard.

Issue Details

Severity: high
Impact: Engine damage risk
Estimated Repair Cost: ₹10,000 – ₹1,50,000
Affected Years: 2021-2025
Frequency: Occasional

Symptoms

Knocking noise

Causes

Low quality fuel

Solutions

Use premium fuel

Prevention Tips

Always use high octane fuel