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Which motor.

The v6 tdi is bad ass, though they haven't been out longf enough for me to have a good opinion of them yet. The urea system on the older version of this motor were finicky but worth it as the power and economy from that motor is pretty damn impressive.

If your planning on going more offroad then just poor maintence dirt roads I probably wouldn't suggest it, the zf gearbox is a great road/ light duty transmission, and the vehicle will do well in bad weather on road,  getting in heavy mud/ rocks might be more then it can take on a regular basis.
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The 2.0 is a bit more buzzy then the.other motors, but they still run surprisingly well and you don't really notice the weight of the vehicle. The 2011 was the first year for the 2.0t, though I don't know of oil consumtion issues for that year its something to be aware of, it was also the first year for the 8 speed.

The 3.2v6 on the early ones was a stout little motor, though they didn't get very good mileage. The problems that occured with those were lower intake flap actuators would fail and vacuum pump gasket would leak oil, neither life threatening just annoying. The manifold flaps weren't cheap. Short of a bad battery I never had a car with this engine towed in (the same driveline was available in the b7 a4)