four-wheeler

US /ˌfɔːrˈwiː.lɚ/
UK /ˌfɔːrˈwiː.lɚ/
"four-wheeler" picture
1.

quad, veicolo a quattro ruote

a vehicle with four wheels, especially an all-terrain vehicle (ATV)

:
He rode his four-wheeler through the muddy trails.
Ha guidato il suo quad attraverso i sentieri fangosi.
They went on a guided four-wheeler tour in the mountains.
Hanno fatto un tour guidato in quad sulle montagne.