Congrats on the new TV !
We use a Sportwagen TDI to tow with, (see avatar) took it to IRG in 2010, it cruises right along ! Going up the steep grades, the variable vane turbo builds boost and it shifts down, keeps right up with cars pulling nothing! One thing I did note was that the temp gauge was always right in the middle. I thought it must be the best cooling system ever. Turns out even thought the temp goes up and down, it has to really get hot for the gauge to move from the center. If you want to track that, put a ScanGage in and it will digitally read out.
We did have to put airbags inside the rear coil springs for a more level ride, it takes about 10 lbs of air pressure to level everything out.
Ours has the DSG, it is rated to tow like 1000 lbs in the US, but in Europe the same car is rated to tow 3500 lbs, so I don't worry much. Ours has 50,000 miles on it now, we are getting 45 mpg empty, we averaged 29.7 pulling the TD to California and back.