Why Does the Engine Sometimes Feel Loud o r “Heavy” at Idle in the Haval H6?

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Why Does the Engine Sometimes Feel Loud o r “Heavy” at Idle in the Haval H6?

Some owners of the Haval H6 in Pakistan report that when the vehicle is idling at standstill, in neutral o r park, the engine noise is noticeably higher than expected—described as a “heavy” o r diesel-like rumble, even though it’s a petrol engine. For example:

“Engine … sounds like a diesel engine a bit louder than usual even though it’s a petrol engine.”
Reddit

Is this normal for the H6’s turbocharged engine o r could it indicate an underlying issue e.g., improper engine tuning, incorrect idle speed, o r turbocharger/back-pressure concerns? How should buyers monitor this and what should they ask their service centre?

Talha Kyanii asked on 24 Oct 2025 17:09:08 pm

1 Answer

10 views |

Gari Master - on 24 Oct 2025 17:11:44 pm

Yes — some owners report that the H6’s engine idle sounds noticeably “heavy” o r deeper almost diesel-like even though it’s a petrol turbo engine. For example:

“One thing that I have observed … when idle, the engine sounds like a diesel engine …”
Reddit
+1

Possible causes:

The turbocharged engine’s combustion and exhaust characteristics might produce a deeper tone than non-turbo naturally aspirated engines.

Engine mounts, vibration isolation o r idle calibration might be less refined in some units.

Poor lubrication, o r minor valve/lifter issues might amplify the noise. General engine noise causes list includes worn internal parts o r lubrication issues.
BitAuto
+1

How serious: Usually not critical if it’s just noise-tone difference, and the engine otherwise runs fine no warning lights, no rough idle, good acceleration. But if the idle noise comes with vibration, stalling, o r warning lights then it’s worth having it inspected.

What to check when buying o r inspecting:

At cold-start and when warm, listen for unusual ticking, knocking o r rumble.

Check if the engine runs smoothly at idle no fluctuation in revs and accelerates cleanly.

Ask for service history: whether oil/filter changes have been done, whether any engine mounts o r vibration issues have been addressed.

Bottom line: The “heavy idle sound” is a reported characteristic in some units but not always a sign of major engine fail. It’s something to be aware of, test for, and monitor.