I would say between 60 and 70K on the low end.
Lots of companies will use any excuse they can to get you to lower your expectations. You may have 7 years but they will try to break it down. Another company may be looking for a ME that has done nothing but mechanical components. You have done electrical so that might take away from your experience in their eyes.
As others have posted, they will play the bonus card too. Unless its guaranteed (not likely) you can't count it.
I remember about a year or two ago I was looking for a new job (made mid 60's at the time) and this head hunter is arguing with me about how much he thought I could make (low 60's). Told him we had engineers at my current company making upper 70's (with less experience then me). He said, we'll your better of staying there. he wasn't very freindly. Ended up finding a job that gave me a 20% raise plus a bonus.
But I have it a little worse then some as I have only had my degree for 3 years. But I have almost 15 years of design experience. Some employers wouldn't even consider my experience before my degree. Nice of them
I have heard that the big three don't pay as well as their suppliers. With a supplier now. There is no way I could make the same salary at the big three.
I better quit now before I REALLY start to rant

Don't want to get started on pay grades, job titles/descriptions and everything else a company will use to stiff you out of a raise
Cksh
Human capital