Am I in any place to ask for a lower car price when financing a new car?

My mom is getting me my first car and she has a credit score of 660. I wanted a 2016 Honda Civic coupe and on the internet price three days ago it was $19,000 then changed to 18,000 and now it's back up to 20,000. Because of my moms credit and no down payment, would we be able to negotiate the 18,000 again? Or lower?

Can i still drive my car?

So I have a Honda Civic with a blown head gasket a mechanic confirmed with a chemical test. When I check the dipstick and the Oil cap I see no signs of coolant mixing with oil I even took the valve cover off and no signs of water whatsoever, although after the car warms up there's bubbles coming through the hose in the coolant reservoir. Not a lot maybe a bubble every 10 seconds. My question is can I still drive my car for another two weeks until I have time to fix it? Or am I risking messing up the engine?

Buy here pay here lot?

Considering i have 400 to put down could i finance a 2009 honda civic (cosigner also) from jd byrider?

Should I buy this car? Will is be reliable?

Basically I'm looking to upgrade from my current car to something more reliable. My budget is $4000 and I came across a 2007 Civic Coupe LX(Manual Transmission) for $3500. It has 173k miles on it and that concerns me but I know it's a Honda and all. I'll mostly be using it to commute to and from college in October and regular daily use. I'll be putting about 700 miles per month off of commuting from college in October but I also baby my cars. Anyways should I buy it if the car seems alright? (Down the road I plan to do basic mods like exhaust and coilovers and all that.) Here's the link:

https://www.cargurus.com/Cars/inventorylisting/viewDetailsFilterViewInventoryListing.action?shopperListingsSearch=40335923#listing=174450036

Should I buy this car?

Basically I'm looking to upgrade from my current car to something more reliable. My budget is $4000 and I came across a 2007 Civic Coupe LX(Manual Transmission) for $3500. It has 173k miles on it and that concerns me but I know it's a Honda and all. I ll mostly be using it to commute from college. I ll be putting about 700 miles per month off of commuting but I also baby my cars. Anyways should I pull the trigger and buy it if the car seems alright?

Can I drive my 2004 Honda Civic hybrid if the IMA battery is dead?

My grandmother has had this car for about thirteen years and replaced the IMA? Batteries (the batteries behind the backseat) before giving the car to me in February so they re still fairly new. I've been good about keeping the battery charged but I live in AZ and it's so hot that the batteries don't charge until it cools down.
My grandmother had told me that if those batteries die, the car will shut off and all electric features will stop working (windows, locks). I'm on the side of the road in the middle of the day because the IMA meter is empty but it hasn't shut off. It's too hot to sit in the car and wait for it to cool down but I don't want to risk my car dying on the middle of the road and for some reason, people online either have very different answers from each other or just won't answer the question period.
Am I able to drive my car without the batteries having a charge or am I going to have wait until the sun goes down and the battery will be able to charge?