What is a good insurance rate on a 2007 Audi A3 for 18 year old?

I was wondering what the insurance on a 2007 2.0L audi A3 would be. we curently have a $137 monthly payment with a 2006 Volkswagen Touareg V6, 2001 Ford Sport Trac and a 2001 Dodge Intrepid (my car).What is a good insurance rate on a 2007 Audi A3 for 18 year old?Assuming full coverage, you'll likely be paying upwards of $900 a month for the insurance on that car. And I don't believe you're paying that little for three cars and a teen driver. Even if it's "minimum liability". I'd suspect the teen isn't listed on the policy.