From reading charts over the years, I noticed that this synastry aspect can be either very good or very bad. Mars is Ego, Uranus is Ego-less, so it’s can activate Pandora’s box and leave you wondering “What the hell was that?”. So when it’s good – you can positively stimulate each other. When bad – you can’t control the situation, and in extreme cases it can lead to some kind of violence, even rape. So be careful with it.

This is a cookbook description of this aspect:

“You will desire to try something really new, something different, perhaps shockingly unconventional, and you have just the right partner to do it with. Explosive temperament, uninhibited or somewhat experimental adventures in sexuality, and desire for a steady diet of change will insure that neither of you will get bored. If your romantic partner’s Mars is in conjunction with your Uranus, you better love surprises. Your partner loves to break rules, take risks and is always in the mood to shake things up. Wild thing.”

Can you relate to this sexy description from the Sky View Zone.com

Hope this helped a bit.