2017 Passat SE 1.8L Troublesome MPG / tank - Fuelly Forums

Click here to see important news regarding the aCar App

Reply
 
Thread Tools Display Modes
 
Old 10-04-2017, 04:16 PM   #1
Registered Member
 
Join Date: Oct 2017
Posts: 1
Country: United States
2017 Passat SE 1.8L Troublesome MPG / tank

I just turned in my 2014 Passat SE 5-cyl and leased a 2017 Passat SE 4-cyl. My 2014 use to give me about 330-340 miles to a tank of gas, mainly city driving. I've filled up twice in this 2017 with more highway than I've ever driven and I'm not getting any more than 270 on a tank. I'm frustrated because I opted for the 4-cyl due to the reported better gas mileage. I do sit in my car idling a lot (with both vehicles), and my mpg monitor tells me on this 2017 that I am getting FOUR mpg while idling. Does anyone have a similar issue or should I take it in?

Thank you!
__________________

VWCory is offline   Reply With Quote
Old 10-04-2017, 09:55 PM   #2
Registered Member
 
Join Date: Jun 2017
Posts: 1,461
Country: United Kingdom
Location: Danderhall
Quote:
Originally Posted by VWCory View Post
I do sit in my car idling a lot (with both vehicles), and my mpg monitor tells me on this 2017 that I am getting FOUR mpg while idling. Does anyone have a similar issue or should I take it in?
Welcome to the forum. Your experience just goes to show how optimistic instantaneous fuel monitors are. When you are sitting stationary and idling you are getting ZERO miles per gallon.
In theory you could sit there and burn an entire gallon of gas without going anywhere.
Anyone who idles when there is no need to is wastefully burning fuel. I even switch off at long red lights.
Highway driving can be pretty fuel guzzling if you drive at high speeds. It takes FOUR times as much fuel to travel at 80 mph than at 40 mph (all else being equal).
Other issues that could be affecting your MILES PER TANK is your relative inexperience of the vehicle (compared to the one you were used to), and possibly even a marginally smaller tank.
Have you tried filling up full, driving until you need to fill back up, again fill up full, and divide the miles between fill ups by the number of gallons you had to put in? That is the only true measure of fuel efficiency. And even that is best done over several tankfuls.
__________________

__________________
2009 Skoda Fabia Elegance 1.4 16V
JockoT is offline   Reply With Quote
Old 10-05-2017, 05:07 AM   #3
Registered Member
 
Join Date: Nov 2007
Posts: 1,852
Country: United States
Location: north east PA
In addition to learning a new car, there is a break in period for components before best efficiency is reach. This is mainly the tires; they have higher rolling resistance when new.

The 4 cylinder engine has a turbo. Small displacement turbos can return good fuel economy, if you can stay out of boost. Drive them for the power, and they can suck down the gas.
trollbait is offline   Reply With Quote
Old 10-14-2017, 07:05 PM   #4
Registered Member
 
Join Date: Sep 2017
Posts: 1
Country: United States
I am having a similar issue with Toyota Corolla. I drove a 2003 model for almost a decade - always got between 280 - 340 miles per tank - depending on % city vs highway driving I was doing (and in L.A. city driving is terrible for FE). Bought a 2015 Corolla 2 months ago with only 35k miles on it, and now I'm barely getting 250 miles per tank - when I fill up putting in about 11 gallons, so do the math and I'm getting LESS than 23 MPG in relatively new car! Corollas are advertised at 28 city/ 38 highway.

I've taken it to 2 mechanics and the Toyota Dealership, had the oil changed (synthetic) and everyone says everything under the hood looks totally normal. The tire pressure is fine. I try to be light on the gas pedal and never unnecessarily accelerate. I coast into lights, put in neutral downhill. I have run the AC a lot as it's been hot, but I did that in my old car too.

I've seen people on the forums recommend turning off the engine at long red lights... Is that good to turn the car on and off so many times? It would probably save me a good amount of gas because I spend 2 days a week sitting in 90 mins of L.A. rush hour traffic (pacific palisades to hollywood at 530 pm = total nightmare).

Any thoughts anyone? Any ideas much appreciated.

-Johnny
JESC26 is offline   Reply With Quote
Old 10-19-2017, 07:38 PM   #5
Registered Member
 
Join Date: Oct 2017
Posts: 1
Country: United States
That's right. This is the reason I always tell my teen agers not to wait inside the car with air condition turned on. They are wasting fuel.
___________________________
Towing Springfield VA
kevinstephen is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Fuelly iOS Apps
No Threads to Display.
Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 06:42 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.