Crossword Genius

Off-road vehicle has decibels I tremble to describe (4,4)

Ross

I believe the answer is:

quad bike

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'off-road vehicle' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'decibels i tremble to describe' is the wordplay.
'decibels' becomes 'db' (abbreviation).
'tremble' becomes 'quake' (synonyms).
'to describe' indicates putting letters inside.
'db'+'i'='dbi'
'dbi' placed within 'quake' is 'QUAD BIKE'.

'has' is the link.

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I've seen this clue in The Guardian.
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