You can buy an older vehicle, just have it inspected and any repairs done before you head out. You can buy a mid-90's vehicle for a few thousand (cheap!) and invest a few thousand to make it just as reliable as brand new.
I have a 1989 Dodge Van (purchased for $3000). I've owned it for 3 years and put over 50k on it just in that time (it now has almost 130k on the clock). Sure, I've had to make some repairs to over the years, but all together including all repairs (including oil changes and tires) it has cost me less than $5,000.
Don't discount a vehicle because it is old. My Mother's brand new Mini Cooper has been in for repairs more often than my van. The wife's 2002 Trail Blazer has had more repairs done in it in the first 3 years of it's life then the total cost of my van and all repairs.
Basically, "new" does not necessarily mean "more reliable". Buy within your budget to keep your dept as low as possible... then you can enjoy yourself more. Just bring it in for checkups and maintenance as needed and you are just as safe as brand-new.