I have a 2010 g37x coupe i was averaging 19 MPG originally went in to infiniti of manhasset i felt like i had a problem with shifting and radio so they said they updated my transmission computer to a up to date version (still avearaging 19 MPG) i went home i realized they stole something out of my car...i call inifiniti of manhasset they were nasty to me and the guy called me a liar and my transmission wasn't resolved...I also had problems with my radio so i went in again a few months later thinking id give them another chance and it was the same issue i had a problem with my radio that they didnt want to resolve while still under warranty so I contacted corporate and filed a complaint....basically after i contacted corporate my radio got changed and they "checked" my transmission but when I got home i realized i was getting horrible gas mileage (13 MPG)....I have no idea what to do my car is out of warranty at this time and their corporate office is of no help. could the inifiniti dealership do something with my car to get horrible gas mileage as a retaliation for contacting their corporate office? nothing else on my car was changed everything is the exact same

Please let me know thank you

 

Try another dealership, explain the situation to them and hope for the best.

Are you basing the 13MPG on the readout on the screen? If the MPG was recently reset and you have been doing a majority of city driving, it would result in low MPG readings according to the screen.

 

There's nothing that they could have done to change your car to get 6 less MPG. You're not calculating MPG correctly, either before on now. The ONLY way to accurately calculate MPG is by dividing the actual miles driven by the number of gallons of fuel consumed. You cannot rely on the car's computer to accurately figure this. How many miles did you drive and gallons did you use before? And Now?

 

They probably reset your trip computer so you are seeing more "around town" driving than "highway driving" in the calculation. My guess is you never reset the trip computer so who knows how long it was gather data and averaging over time.

Check your mileage the old school way on your next fill up.

 

To rephrase what BB is saying...

Fill up your car...and then make sure it's full...let the pump stop on its own at least twice. Doing this excessively isn't good, but I don't see any issue with doing it twice. I can barely get anymore gas in after the first stop anyway.

Now reset your trip odometer to 0. Drive it for 200 miles, and then fill up again. You can actually drive as far as you like, but 200 miles should give you some relatively accurate numbers. I'd suggest using the exact same pump if possible. It should have the same auto-stop calibration.

Now, divide the number of miles by the number of gallons, and that's your MPG for that particular tank.

Drive it normal...don't try to be efficient, and don't try to be inefficient.

However, if you never did this in the past, you don't have a baseline to compare to.

 

That is exactly what I'm saying except in more detail.

I'm amazed that so many people that have wild discrepancies in fuel MPG from what they think they should be getting and never check the "old fashioned" way that involves doing the actual second grade math computation rather than relying on a computer with a clearly flawed algorithm for computing MPG. Yet we often see similar threads where people have fuel mileage that can't be correct unless there's really big problem and blame the car for getting poor mileage. I'm not saying the car gets great mileage compared to comparable models, it doesn't. But nobody is driving this car in a "normal" manner and getting single digit MPG results or 12 or 13 like I've seen in other threads. There is either a problem with the car or problem with the math skills. I haven't gotten single digit MPGs even when I've done a full day track event.

 

"Wait until he notices we put the -6MPG hack on his car! That'll teach him!"

 

You can do it the "old fashioned" way or the Common Core way.

Fill up your car, drive to McDonalds, ask how many gallons your car takes, then drive back to the gas station and get the name of the attendant, count the number of letters in his/her last name, divide that by the number of digits in your license plate. Convert that to a fraction and mutiply by the number of the month.

 

Maybe they lined the undercarriage with lead to make the car heavier...

 

Maybe they accidentally gave him a secret tune that increases horsepower to 400 and reprograms the transmission to near dual clutch shifts, at the cost of 6 miles per gallon fuel consumption.

If this happened to me I would start moving into the bomb shelter. I don't have a bomb shelter, so I would start building one. Conspiracy is in the air.

 

Your common core math is astounding...but where's your Cluster Matrix?

 

 

The cluster is in the fvck

Telcoman