This is a very good question and one that all start ups struggle with. Check this image out, it is the best visual representation of what an MVP should be http://bit.ly/1GasIj1

What is the status of your idea development. Have you built a wheel or a skateboard? The main point being, your idea must be developed enough to give some level of value to the customers and most importantly (a lot of entrepreneurs dont focus on this) a great user experience. It may not be your full vision for the product but it provides a quality service. If you launch an idea that breaks, has loads of bugs, isnt followed up with great service the test of potential is tainted and therefore not a true representation of the need in the market.

If you have a working skateboard launch. If you have a wheel time to rethink how what you can take to market to test and iterate.

If you'd like to discuss further feel free to book a call
Best regards
Steve