Negotiate

My 2015 sonata just crapped out on me. Apparently the engine was “bone dry” when I still had about 3k miles until my next oil change. -that’s another story.

I’m in the market for a new car. I don’t want used seeing how my last 2 cars had serious issues between 120-150k miles. Im looking to finance. What is a realistic percentage that I can talk a car company down? I’m thinking like 5-10% is reasonable but then again I have no idea. I’m the type of guy that wants value more than aesthetics.