if you can snag 0%-0.9% with a new auto what are the drawbacks? I have a more than ideal vehicle right now that serves my current needs, with equity in it too, but once I hit the road for all those PCS moves would like a reliable truck someone else hasn't already beaten up. I fear the unknowns with used vehicles and the lack of a substantial warranty.
(and I thought we were supposed to piss away our ensign checks and start the saving once we hit o-2?
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Mostly the big tradeoff with financing a new vehicle is the big hit you take on depreciation. It's often said that the car loses 25% as soon as it's driven off the dealership lot, so if you're buying new, you kinda have to drive the wheels off it to get the most from your money. Of course, the tradeoff with buying used to avoid depreciation is that you don't get the warranty. The middle ground would be buying "certified pre-owned" (meaning the manufacturer gives it a thorough inspection, makes sure there are no big issues, and puts it back on sale), since that can come with a limited manufacturer's warranty (if you get it straight from the dealer), or one of those protection plan dealies, where it's like "maintenance insurance," you pay a little up front and if something goes wrong during the protected period they'll fix it. Of the two, the CPO manufacturer's warranty is usually the better deal (that's certified pre-owned, not Chief Petty Officer).
I have a 2011 Ram 1500 Tradesman, which is pretty sweet. Hemi V8 and a regular cab, so it's light and powerful (390 bhp, 408 ft-lbs). It can only seat two (or two and a half, if I'm ever heading to the bar with Tyrion Lannister or something), so if you need more passenger space, look elsewhere. It can tow just under 10,000 pounds (or haul however much you can fit in the back), and when it's unloaded, it's quick as hell (the very similar '09 Ram R/T regular cab did 0-60 in under 6 seconds). If you're looking for a family somewhere down the road, spring for a crew cab or a quad cab. And if you do get a new one, they're coming out with a diesel, which would save you some gas on those cross-country moves.
The other name, of course, would be F-150, since they've been making them forever, so they're getting pretty good at it, which means the more recent used ones will still have a lot of life in them. If you can get one that's like 2 or 3 years old, they're the ones coming off leases, which usually means they're in pretty good shape. Again, certified pre-owned and a manufacturer's warranty would be ideal in this case. I just noticed Kayeshorter works for Ford, so he can probably tell you more about that.
Also, if this isn't what you're already doing, compare your offers to what's available through USAA's car buying service. Always shop around when buying a car, and always haggle. The worst he can say is "no."
And let's be real, we don't need to start saving until we hit O-3 at least