Passat (B5) :: Fuel Consumption Is Not Satisfactory
Jan 21, 2009
I just don't get what causes the Passat 1.8T to have worse fuel economy than expected considering its 0.27 drag coefficient, 3200lbs curb weight, and 4 cylinder 1.8t engine compared to a 3,500lbs 3.4 liter V6 0.31 cod Impala. I mean a new Ford Escape NON Hybrid SUV will get the fuel economy on the highway as a 1.8T Passat and that's sad considering that the Escape has the drag coefficient of a brick and the B5.5 Passats are among the 10 most aerodynamic cars ever sold in North America.
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I changed the throttle body , PCV , clean the EGR tube and put new gasket in my Prius B 2010 hybrid.
The car was burn oil 1/2 liter per 1500km and since I changed the throttle body I noticed that the car burn 1/2 liter per 400 km .The job by the dealer.
Is there any problem in the installation?
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I had idle travelling problem wich I solved changing AIT sensor. At the same time I cleaned MAF and TB with air sensor cleaner. Now my problem is cold start and driving 2nd and 3rd gear. Instantaneuous fuel consumption will go 20l to 50l driving 2nd and 3rd gear and if I stop values lowers like 20l...16l...10l... and finally on idle it stays in 0.8l/s. Average consumpion has increased 1l to 2l/100km.
These are the air mass readings when I drive 2nd and 3rd gear
rpm ja air mass g/s
1400 9,56
1240 9,22
1240 8,97
1240 8,64
1240 8,47
1200 8,86
1240 8,44
1240 8,31
1240 8,5
1240 8,36
1240 8,17
1240 7,67
1240 7,89
1240 7,89
1480 6,17
2600 7,03
3120 34,14
Full Throttle
2800 48,89
3320 94,11
4040 112,31
4680 135,56
5320 150,31
Turbo asked vs. actual value
1510 1290
1990 1970
1970 1980
1890 1870
1000 1180
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So, my 2005 Gen II Prius went for a scheduled service on Wednesday, 70k miles, Toyota main dealer. They called and said it needed new front brake pads and disks, I was surprised but gave the go ahead. There would occasionally have been a mild squealing sound from the brakes at very low speed so I accepted the pads might need replacing, I was surprised the disks needed replacing but it hard to argue about brakes, especially as I only have the car a year (I'm the second owner and it has a full Toyota service history). It had a "major" service, new spark plugs, new front brake pads and disks.
Since collecting it I've noticed that the engine seems to kick in more often and needs higher revs. The fuel consumption seems higher, normally mid 50's MPG (imperial gallon) now 35MPG. However it hasn't been driven many miles since its been serviced so its a low distance for calculating MPG. I've also noticed that the car seems to slow more quickly without applying the brakes, a regularly driven hill that I coast down at 48kph now only gives 35kph. Also, if I drive on a flat road for a mile or 2 and coast to a stop the front brake disks feel VERY hot, way too hot to touch, drivers side more so that passenger side.
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When I go out to do errands around town (I live right in town) I get horrendous gas mileage. Now, I understand gas mileage is high at the beginning of a trip, but for this long and this high and under these circumstances? I'm getting ABOVE 10l/100km when I have 80% charge available (for americans, that's disgustingly high MPG like, pick-up truck high), AND my foot is completely off the gas. Literally, coasting, or braking, and I'm still sucking up gas. What the heck?
Is this just because it takes a certain amount of time for the engine to run no matter what or something? I still don't see any reason for me to be eating up all that gas when my foot isn't even on the gas AND most importantly, I have charge available. Feels pointless for me to use my car for what I use it for 70% of the time, which is for quick errands around town at low speeds. Thought the prius was suppose to be a superstar for this kind of thing.
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What is the hourly fuel consumption for a Toyota Prius at idle? Purpose is keep cabin warm for 8 hours. Would this damage engine?
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We have two counters on MFD (1-trip data and 2-accumulated data), none of them show the gas consumption.
Every time I stop at gas station I have to divide distance by average gas consumption to know, beforehand, how many liters to top up the tank.
Question is: Is it possible to use VCDS to make the MFD show that information once it is obviously known by the board computer?
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I have an old (fourth generation before 2005) and low performance bmw 316 at its 40 000 km (its been in garage for some time after it's done 19 000, then i bought it, so everything rubbery is problematic), i feel like it burns more fuel then it should considering its performance , since its almost 20 sec. from .naught to 60 , it has a more noticeable engine braking compared to my 2005 passat 1.6 (almost twice as effective), and a higher fuel consumption, when i stop the engine when idling, the rpm needle (or whatever it is, not a native speaker) drops to 0 immediately like in a millisecond or so.. no inertia no nothing, oil and everything is regularly checked up but i think there is something deeper going on.
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My 2002 6 cylinder Malibu gives an odor of gas when turning on the heater it has had a fuel pump and filter install 8 months ago and there has not been any smell until I used the heater this winter. I understand fuel consumption is more when using the heater but this is ridiculous I go around 8 or 10 miles and i've used more than a quarter of a tank.
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How do I turn the "fuel consumption comparison" off? I want to see only the quantity and price off the gasoline I have consumed.
There isn't a "disable" feature, so I am guessing I set it to 0 mpg?
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In Menu -> Info Phone -> Fuel Consumption
How can I reset the fuel consumption?
I couldn't find it on Owner Manual...
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Since I got Prius I've noticed that driving at 50mph returns 80+mpg , 90+mpg if I let it gently glide at -1mph per 1 mile. As it gradually slows down, the mileage starts to decrease. By the time I get down to 45 mph the mileage shows around 70mpg,
I get down to 40mph, I'm only getting 50mpg. When I keep my speed between 40 and 45 I get about 52-55 mpg for the day. If I keep my speed between 45 and 50, I get 55-60mpg for the day.
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I bought a Prius 2nd Generation (2008) Japanese domestic). When I go to Consumption view it shows blank Graph for the past 5min - 30 min graph. How to fix this.
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I have been realizing that random every so often miles or months (varies completely) that my average fuel consumption resets itself and starts retaking brand new information and has discarded the old. Is this normal?
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It's great on gas below 2200 rpm. Averaging 34 combined. However whenever I'm in a situation where I need to accelerate, such as beat the yellow light, up a hill, or pass someone and I shift to a lower gear I lose 1-2 MPG at the drop of a dime. And then it takes forever to recover. What is going on here? Is the engine being flooded with fuel?
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I replace all my spark plugs but my car still has no power and its eating gas like crazy.
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My hyundai accent 2004 consumes fuel but does not bring out black smoke, what can i do?
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I just read in Reader's Digest that some can improve gas mileage by 25% by not putting their car in reverse. This seems like an exaggeration, how can putting a car in reverse be that bad.... like 25% bad? Source: [URL] .....
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I kept a record of every drop of fuel used in my 2008 Gen II Prius. It was easy with only two simple screens: Energy and Consumption. After writing down the numbers I reset the Consumption screen at every fill up. I entered these into a spreadsheet that did a bunch of calculations telling me all kinds of interesting things.
Now to my new 2014 Prius v Two. I'm confused regarding all the new information available. (A good thing) Which screen and number am I looking for that is equivalent to the Miles and cumulative MPG on the old Gen II?
Would like to sort this out before my first fill on the new car.
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Yesterday we were on a 10 hour trip and the engine was acting oddly; when braking, the engine sounded just like the engine brake, but the MPG indicated that it was consuming fuel (engine brake does not consume fuel). When braking, the engine would sound, and the MPG indicator indicates fuel consumption, it would go down to 50, with the heavier braking, like when stopping... then at a certain point it would suddenly stop
It seemed to happen most times but not always. This issue didn't happen before.
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how much fuel is consumed during a typical warm-up period for the Gen III? I realize there are variables related to ambient temperature etc..
my interest is to get a baseline consumption figure to compare warm-up saving devices/techniques against.
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