The cost estimates for spare parts, repairs and maintenance of vehicles have been calculated at $50 per vehicle per month for new vehicles up to one year old and at $150 per vehicle per month for vehicles older than one year.
18. 车辆零配件、修理和维修费用估计数根据一年以内的新车每辆每月50美元、一年以上的旧车每辆每月150美元计算。