MrClean
Go Kart Champion
For those that have frequented this forum, and, in particular, read the MPG threads where I posted about my unusually low gas mileage, I was finally validated yesterday!
Background:
My car is a 2010 VW GTI DSG. EPA estimates for gas mileage are 24 City / 32 Hwy. From day 1, I noticed the gas mileage didn't measure up and seemed unusally poor for this car, given my last car, a 2007 Audi A4 Avant 2.0T manual had better mileage even with AWD and it weighed ~400 lbs more! Over the first couple months of ownership, I could not get better than 26 MPG hwy and around 21 City, combined 23-24 per fill-up. No, I'm not chipped, and no I don't have a lead foot, as has been asked of me several times. Oh, and the sooty tail pipes were also a HUGE visual indicator this car was running rich.
Anyway, after two failed attempts to find anything during my 90 day inspection and a 5k oil change (I know, it is not recommended), I was hesitant to even bring it up again, but when the service advisor asked "is there anything else we can do while your car is in for the 10k service?", I decided to give it another try, telling her of my MPG woes.
Third time's the Charm:
During my 10k service yesterday, the VW technician performed a TSB for the throttle body control that affected my VIN. Well, looking into the problem more he saw on the VAG-COM that when my throttle body was opened 71%, the car was dumping 100% fuel! For reference, this percentage should be closer to 90% when fuel is at 100%. Looking into the situation further revealed other poor settings.
The technician did the TSB to the throttle body and made some VAG-COM adjustments. He did a couple test drives to see the effect and confirm things had actually improved. Imagine that?
All this was explained to me in great detail and I could tell the techncian was a determined individual to trouble shoot this problem and communicated it to me, properly. I was impressed. All that I experienced and all that he said was logical and made sense.
The Proof:
Driving home, about a 25 mile drive, I noticed the MPGs did improve. My avg when I exited the hwy was well over 30 MPGs! Since then, I have been watching the consumption and the tail pipes. All seems to be much improved. On my drive into work this morning, driving as I normally do in rush hour, I got my best Avg MPG yet, almost 34 MPG! Before this, I could barely reach 30 MPG on the computer readout (which we all know is a bit optimistic).
Background:
My car is a 2010 VW GTI DSG. EPA estimates for gas mileage are 24 City / 32 Hwy. From day 1, I noticed the gas mileage didn't measure up and seemed unusally poor for this car, given my last car, a 2007 Audi A4 Avant 2.0T manual had better mileage even with AWD and it weighed ~400 lbs more! Over the first couple months of ownership, I could not get better than 26 MPG hwy and around 21 City, combined 23-24 per fill-up. No, I'm not chipped, and no I don't have a lead foot, as has been asked of me several times. Oh, and the sooty tail pipes were also a HUGE visual indicator this car was running rich.
Anyway, after two failed attempts to find anything during my 90 day inspection and a 5k oil change (I know, it is not recommended), I was hesitant to even bring it up again, but when the service advisor asked "is there anything else we can do while your car is in for the 10k service?", I decided to give it another try, telling her of my MPG woes.
Third time's the Charm:
During my 10k service yesterday, the VW technician performed a TSB for the throttle body control that affected my VIN. Well, looking into the problem more he saw on the VAG-COM that when my throttle body was opened 71%, the car was dumping 100% fuel! For reference, this percentage should be closer to 90% when fuel is at 100%. Looking into the situation further revealed other poor settings.
The technician did the TSB to the throttle body and made some VAG-COM adjustments. He did a couple test drives to see the effect and confirm things had actually improved. Imagine that?
All this was explained to me in great detail and I could tell the techncian was a determined individual to trouble shoot this problem and communicated it to me, properly. I was impressed. All that I experienced and all that he said was logical and made sense.
The Proof:
Driving home, about a 25 mile drive, I noticed the MPGs did improve. My avg when I exited the hwy was well over 30 MPGs! Since then, I have been watching the consumption and the tail pipes. All seems to be much improved. On my drive into work this morning, driving as I normally do in rush hour, I got my best Avg MPG yet, almost 34 MPG! Before this, I could barely reach 30 MPG on the computer readout (which we all know is a bit optimistic).