It's a pretty miserable little car, though. IMO. I think a Versa or Fit is a lot more bang for the buck. The pitiful little center dash alone makes me never recommend a Yaris...contrary to people marketing cars with one, it does NOT help you keep your eyes on the road (unless you're sitting in the middle of the car). It just saves the company money by lessening the amount of different components for RHD/LHD.
To me, 'economy,' '20k,' and 'used' aren't really works that belong together. I guess to some people, a well-optioned Accord is an economy car?
It's hard to get a normal compact up over 20k unless it's a performance version or absolutely loaded with electronics (which I don't really get...25k base engine Focus? what?).
My Mazda3 was ~18k sticker; keyless/PW/PL/tilt/cruise/bluetooth/nice stereo. I don't like their 2013 trims as much, but they're not super-different.
Focus is also pretty nice at the ~20k or less trim level.
Civic seems REALLY well-equipped in base trim. The EX is barely over 20k and adds the few missing things (including an auto trans).
If you really wanna go used, you can buy a really nice Volvo S40/V50/C30 for 20k.
Is he looking for something bigger than the above-mentioned? (all compacts)