depends on how much miles u rack up....i think the avg good japanese replacement belt should give u 70,000 to 80,000 km life
if u are unsure of the time/mileage used so far...trust me...spend the $200-$300 extra and change de damn ting...
VEGA...yuh waiting for some bent valves to change de belt or wha?
hustle and change de ting nah...believe me..is not a nice thing when dat belt goes...!