A new car only needs shaken after the first three years, which gives you a brief respite from cost and time it takes to go through the process, last I checked i

A new car only needs shaken after the first three years, which gives you a brief respite from cost and time it takes to go through the process, last I checked it was close to $500USD (which includes vehicle weight tax/insurance). In practice it also get's more expensive the longer a vehicle is on the road, because mechanic work is expensive in Japan and to continue meeting the requirements you'd end up spending money on maintenance. I think those are the two key factors that encourage people to keep buying new vehicles, but I might be missing something!