Engine knocking noise under load in 3 Series

Knocking sound heard when accelerating.

Issue Details

Severity: high
Impact: Engine damage risk
Estimated Repair Cost: ₹10,000 – ₹60,000
Affected Years: 2015-2024
Frequency: Occasional

Symptoms

Knocking noise

Causes

Poor fuel quality

Solutions

Use better fuel

Prevention Tips

Premium fuel usage