Engine knocking sound under acceleration in Fortuner — Toyota Fortuner
Users hear a knocking or tapping noise from the engine when accelerating, especially in diesel variants.
Severity: High | Repair Cost in India: ₹5,000 – ₹60,000 | Affected Years: 2016-2024 | Frequency: Occasional
What is the “Engine knocking sound under acceleration in Fortuner” problem?
Users hear a knocking or tapping noise from the engine when accelerating, especially in diesel variants.
Impact on driving: Can damage engine if ignored.
Issue Details at a Glance
- Severity
- High
- Impact
- Can damage engine if ignored.
- Estimated Repair Cost
- ₹5,000 – ₹60,000 (parts + labour, Indian workshops)
- Affected Years
- 2016-2024
- Frequency
- Occasional
Symptoms to Watch For
- Knocking sound
- Loss of smoothness
Likely Causes
- Poor fuel quality
- Injector issue
Recommended Solutions
- Use premium fuel
- Clean/replace injectors
Prevention Tips
- Refuel from trusted pumps
Should you worry about this issue?
This is a high severity issue on the Toyota Fortuner. Get it inspected immediately at an authorised service centre — driving with this fault can be unsafe and may lead to far costlier damage.