3-Series GT will debut next year as part of the next-generation 3er range.

Here are the latest spy shots of the 2013 BMW 3-Series GT. This time our spy photographers caught the upcoming Gran Turismo 3er doing some testing on the Nürburging-Nordschleife for the first time.

The prototype spotted here is still under heavy camouflage but in the background of some of the shots we also get a less-disguised standard 2012 3-Series for comparison. Noticeable is how the GT rides much higher than the standard 3er trailing behind it.

BMW likely hopes that the 3-Series GT will be a more successful variant to the 3er than the 5-Series Gran Turismo has been for the 5er range.

We expect the next-generation 3-Series to debut later this year with the GT variant following in 2012.