Just a quick update;
I'm past 1500 miles on the Sonata and the clutch is really smoothing out for me. It's a bit tricky in 1st from a stop, but I found the exact touch on the clutch/gas to get it going, and can now shift earlier than when it was new without feeling that lug/chug on the engine.
My average is reading from 36.8 to 39.9 depending on traffic - as anyone in PA knows almost all roads and many bridges are under major construction causing long stop/go. There is one long up/down hill and when I get stuck on this 3 mile downhill the traffic stops-goes at under 5mph - so what I've been doing is just shutting off the engine, keeping it in neutral and coasting down. A restart at the merge from 2 to 1 lanes and I'm off again.
The button for the reset is on the lower part of the steering wheel, so I think I accidentally had reset it in my earlier long trip(s). Now it seems to be reading steady.
I've also figured out (thanks Wayne!) where to keep it in the lower end of the higher gear and when to shift down on the roller coaster roads here, which is bringing my average up a bit more. That was a little tricky to learn where to keep it, plus, having the engine break in now set I'm seeing a bit lower all around numbers, and higher average.
It seems like you can go for a - long - time without getting gas too. Chris has the latest number where I blew past the Maxx total miles driven in one tank.
I also found, quite by accident, a neat little cubby on the front passenger side when I was picking something up from the pass side of the car. Where your left knee sits on the side of the hump there is a plastic panel storage area for a passenger cell phone or map, mints, or ? This is in addition to the door panel storage and it keeps the passenger small stuff out of the way of the driver who keeps their phone and charger in the well in front of the charge outlet tray.
Notes about the heater / air conditioner:
Sometimes even in summer in PA the temps can swing 35 degrees in 12 hours. So once I tested the heat, and about 1 and a 1/2 minutes after turning it on, I thought "well, the heat does not work that well at all..." and before I finished that sentence I was being heated right out of the car. Yikes. So - the heat works really well.
Using the A/C is nice - a test of that at 90 degrees and it works really well! The blower is a bit noisy at the full-on all the way up level, but you will find that you won't need to stay at the top blower level for long, just enough to push hot air out of the car, then you can drop it down (fan level) and it's very very quiet - and COLD. Nice!
If there are any questions anyone has let me know and I'll try to answer them.
I LOVE this car! Whoohoo!
*** ETA: Oh yes - the horn. One comment. I really hate the horn. Apparently I'm not the only one either.... judging from the other forum and all the directions for the DIY people to change them.
Quick note: I went to a local store not too long ago and after I'd gotten out, pressed the clicker twice to lock the doors and heard this little sickly "meep" Embarrassed, I turned to a landscaper (young guy) who I was passing and said "Is that not the stupidest horn sound you've ever heard?" This led to him stopping what he was doing and then telling me that he was glad I had done that, his girl-friend had just bought one and he said he was heading straight to the car parts store to get a replacement for it.
So - the one and only 'real' complaint I have about it is the horn... and that will be changed soon.