"如果你这样做的话,以后可以不用换新车了"请帮我把这句话翻译成英语,

如果这句话的情感是“如果你这样保养你的车,以后就不用换新车”
那么建议:if you do this / if you do it like this,you don't need to (change to) / (buy) a new car.
如果这句话的情感是“如果你胆敢这样做,以后就别指望换新车了!”话：
if you do this / if you do it like this,you will never get a new car
or
"if you do this / if you do it like this,you can kiss your new car good bye." (这个比较口语化)

If you do so, you don't need to change for a new car later on.

先直译：If you do that ,you shouldn’t change the new car from now on
另一种说法：You shouldn't change the new car if (whether) you do that

if you do that ,you shoudn‘t chnge the new car