I fucken abhor car salesmen. I always make it a point to be tough as nails on them. My girl wouldn't let me come with her when she purchased our Honda Civic because she knew I was going to put whatever soul who was unlucky enough to approach me through the paces.
Car salesmen will promise you the world....but it's not up to them concerning what you pay, generally. That's up to the bank doing the financing, here in the States anyway.