GTIs are driven largely by flatbrim douchebros that like to drive fast and crash into things.
A4s are not.
Only one way to find out - hit up your insurance company for a quote. They'll just need a VIN from a 2011 A4.
GTI's are driven by kids who go racing and get in wrecks. My '12 S4 is going to be $100 less per year to insure than the GTI was.
Jeeze your insurance prices are high. My insurance is about $775 every 6 months, full coverage.
Maybe being on parents helps THAT much? I'm listed as the only driver and I live about 4 states away so IDK.
But back in high school my g35 was dirt cheap, few 17 year olds had one. Now the insurance price is starting to rise like crazy. Need to sell that car soon.