Knocking sound from engine during acceleration in Sierra — Tata Motors Sierra
Metallic knocking noise when accelerating.
Severity: High | Repair Cost in India: ₹5,000 – ₹40,000 | Affected Years: Petrol | Frequency: Occasional
What is the “Knocking sound from engine during acceleration in Sierra” problem?
Metallic knocking noise when accelerating.
Impact on driving: Serious engine damage risk.
Issue Details at a Glance
- Severity
- High
- Impact
- Serious engine damage risk.
- Estimated Repair Cost
- ₹5,000 – ₹40,000 (parts + labour, Indian workshops)
- Affected Years
- Petrol
- Frequency
- Occasional
Symptoms to Watch For
- Knocking noise
Likely Causes
- Poor fuel quality
Recommended Solutions
- Use high-quality fuel
Prevention Tips
- Avoid low-grade fuel
Should you worry about this issue?
This is a high severity issue on the Tata Motors Sierra. Get it inspected immediately at an authorised service centre — driving with this fault can be unsafe and may lead to far costlier damage.