I think I might want to finance this car.

我想我可能要贷款买这辆车。

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Finance a car相当于buy a car by installment(分期付款)。Finance作动词意思是为…筹措 资金，向…提供资金。

例：
The concert was financed by the Arts Council.
音乐会由艺术委员会资助。