Know the art of haggling. First you try to canvass how much dealerships are willing to give you. This can be as easy as phoning 5-7 dealerships around the metropolis. Personally, I go with the "cash basis" attempt so I know how much I can squeeze from them. Then I go with the "best deal" I found then renegotiate from there. If there's one thing I can tell you is that negotiation attempts shouldn't just take 2 steps. It's a long process wherein both you and the seller should be satisfied. 50K ba gusto nila? Push them for more. Some people do low-blow attempts "gusto ko 90K discount!" then renegotiate from there until they finally settle for something like 65K. Sometimes you can bluff your way, "sabi ng XXX dealership na 70K discount. But since nandito na ako, kaya niyo ba ako bigyan same offer?".

As for my purchase sa Sonata, I used the pressure tactic -> "dala checkbook" -> "bibigyan kita one chance lang to make me an offer. Discuss it with your manager. I'll give you 10minutes." I got a pretty good offer back then from Hyundai Quezon Avenue the offer was comparable to that of provincial dealerships where it's often cheaper to get a unit.

Most won't put manual transmissions in their showrooms. It's pointless because manual transmission sales nowadays are pretty low unless you're a taxi fleet operator. However, they can and SHOULD be able to schedule you an appointment for a test drive on your selected car variant.