A clarification here:
The 34 MPG highway rating is for the 528i – and that now has a 2.0 L 4 cylinder. NOT a TT I6.
[ The TT 6 cylinder is in the 535i – EPA rating 20 / 30.
But HP & TQ are 300 & 300. Well below the CTS’s TT V6. ]
The TT V6 compares [ HP, TQ ] more nearly to the 550i, a TT 4.4L V8 with 400 HP & 450 TQ – and the EPA rating for the 550i automatic is exactly the same as the [ estimated ] Vsport TT V6’s rating = 17 / 25.
Would love a 34 MPG rating for the TT V6, but.....