Honda Dio (af18/af25) Scooter Common Problems
Known issues to inspect before buying a used Honda Dio (af18/af25) Scooter. What to check and how much repairs cost.
Carb clogged from old fuel sitting
MODERATERough idle, hesitation, or no-start when cold
Fix cost: $20-$60
Variator and belt worn, sluggish acceleration
MODERATESlipping at takeoff, belt squealing, top speed loss
Fix cost: $30-$80
Rusted or seized rear drum brake
SERIOUSBrake feels locked, drags, or has no resistance
Fix cost: $25-$70
Crankshaft seal leaking, oil fouling plug
SERIOUSWhite/blue smoke, oily air filter, oil consumption
Fix cost: $50-$150
Pre-Purchase Checklist
โCold-start the engine immediately on arrival
โCheck for smoke during warm-up ride
โTest both brakes for grab and drag
โInspect frame and floorboard for rust cracks
Solid if maintained, neglect kills them fast