The Mercedes-AMG GT R is a contender for our Performance Car of the Year 2017. It's the car that comes closer than anything else to Porsche's super 911 GT3. Jack Rix takes a closer look....The Mercedes-AMG GT R is a contender for our Performance Car of the Year 2017. It's the car that comes closer than anything else to Porsche's super 911 GT3. Jack Rix takes a closer look....
