I have a Hyundai Elantra with 240,000 miles and no problems. The arthritis will put you in the next car up, the Sonata, which is a little roomier.
What year is it?
My dad bought a 2006 (GLS, IIRC) with ~20,000 miles from Enterprise in 2007 for $19K with sunroof, leather, Lojack, the warranty, roadside assistance, etc. and has had no major problems with it, aside from a recall (a malfunctioning electrical switch) that was promptly taken care of by the dealer.