If you're pretty sure you're gonna buy it eventually, don't lease, as you'll be paying more interest. Assuming a residual of ~50%, you'll be paying for 50% of the car over 36 months + interest on both portions of the car (the residual portion, and the depreciation portion). Compare that with paying 100% of the car over 60 months at 0.0% or 0.9% APR, and your monthly payments won't be much higher, but you'd definitely save money at the end (effective lease interest rates are almost always higher than the finance counterpart).
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