Engine knocking sound under acceleration in M4 CS

A knocking or pinging sound is heard when accelerating hard.

Issue Details

Severity: high
Impact: Can damage engine components.
Estimated Repair Cost: ₹5,000 – ₹80,000
Affected Years: 2022-2025
Frequency: Occasional

Symptoms

Knocking noise
Loss of power

Causes

Low-quality fuel
Incorrect ignition timing

Solutions

Use premium fuel
Engine tuning

Prevention Tips

Always use recommended fuel