epssax
Veteran Member
I bought a new 2015 Jetta last August.. Had only phase 1 and got 41-42 in suburban driving with gobs of torque. Got my phase 2 done with mileage drop to 38 under same conditions. I was disappointed and wrote VWofA. They sent me back for a re-tune and the dealer said there are no codes so we can't do anything more.
I went 100 miles out of town and needed a fill so bought local diesel there. I noticed I was getting better mpg according to my dash read out. Not believing it much I was surprised by the next fuel purchase, 41 mpg. The next was 42. I have gotten 44 the last two fill ups. I fill up between 300-400 miles. Went on the road this weekend and the readout on the dash reads 53.1!
I started adding a little Lucas fuel conditioner about that time.
The torque and shift points on my DSG haven't changed but my mileage sure has. I'll keep following this PLEASANT change in mpg! I am sure something has caused my tdi to use less fuel.
I am using fuelly to compute my mpg, BTW.
I went 100 miles out of town and needed a fill so bought local diesel there. I noticed I was getting better mpg according to my dash read out. Not believing it much I was surprised by the next fuel purchase, 41 mpg. The next was 42. I have gotten 44 the last two fill ups. I fill up between 300-400 miles. Went on the road this weekend and the readout on the dash reads 53.1!
I started adding a little Lucas fuel conditioner about that time.
The torque and shift points on my DSG haven't changed but my mileage sure has. I'll keep following this PLEASANT change in mpg! I am sure something has caused my tdi to use less fuel.
I am using fuelly to compute my mpg, BTW.