This is exactly what I do! So it is safe to continue doing so?
When I get down to the bottom of the hill I put the car back in drive and hit CC again.
Newbies and Vets: Tips for better fuel economy!
- Thread starter BleachedBora
- Start date
When I get down to the bottom of the hill I put the car back in drive and hit CC again.
So a question about settings I just want to be sure about.
Does it matter what the temperature is set at when driving and not using AC or Heat? I usually have it all the way to the left, but I was wondering if setting it in the middle would have any benefit?
Also, as far as what to leave it set on when not having the AC turned on? I normally leave it on the high vent. Is this the best setting when you don't have fan or AC/Heat on?
Does it matter what the temperature is set at when driving and not using AC or Heat? I usually have it all the way to the left, but I was wondering if setting it in the middle would have any benefit?
Also, as far as what to leave it set on when not having the AC turned on? I normally leave it on the high vent. Is this the best setting when you don't have fan or AC/Heat on?
roadhard1960
Veteran Member
Depends on your definition of high vent. If you mean the windshield vent then that often is running the AC. If you see a puddle under your car after driving the car with the high vent then you know the AC compressor was running. You should also be able to feel the AC compressor running on a low horsepower diesel. You do not feel the AC very much on a newer 300 HP Cummins or probably the other Ford and GM 300 HP diesels. The vents that blow at your feet or that you can adjust to hit your chest or face will not turn on the AC on the cars and trucks I have owned. Some vehicles never turn on the AC unless I hit the AC button but most do whit the high vent also known as defrost.
Running the Windex three times on the inside of the windshield can reduce that desire to run the defrost. I drove my parents car for the first time last weekend. I had to clean the windshield as soon as I get to the in-laws. Then I went out in search of an alignment shop as the car was pulling.
Running the Windex three times on the inside of the windshield can reduce that desire to run the defrost. I drove my parents car for the first time last weekend. I had to clean the windshield as soon as I get to the in-laws. Then I went out in search of an alignment shop as the car was pulling.
New to VW
Looking to buy and older VW Jetta or Passat but was needing some input on them please, I'm going to use the car for a computer to and from work about 100 miles a day. I'm wanting to know what year if any are better than the rest looking at 2002 to 2006, looking for good mpg and less Manitance as possible. Thanks
Looking to buy and older VW Jetta or Passat but was needing some input on them please, I'm going to use the car for a computer to and from work about 100 miles a day. I'm wanting to know what year if any are better than the rest looking at 2002 to 2006, looking for good mpg and less Manitance as possible. Thanks
Squirrelgal
New member
This is my first diesel
When I picked up the car, the dealer filled it up with Murphys fuel. Drove to St Petersburg and had 1/2 tank left...filled up with Sunoco while down there, then drove back to Tallahassee. The car seems to knock a little on slow take off. Am trying to run most of the fuel out, but not before the light comes on. BP and Shell are very close by...how can I tell if BP is powerblend? Or should I just go to Shell??
When I picked up the car, the dealer filled it up with Murphys fuel. Drove to St Petersburg and had 1/2 tank left...filled up with Sunoco while down there, then drove back to Tallahassee. The car seems to knock a little on slow take off. Am trying to run most of the fuel out, but not before the light comes on. BP and Shell are very close by...how can I tell if BP is powerblend? Or should I just go to Shell??gary9696
Active member
I understand the intake duct, but what are the other two ducts are you talking about?
deejaaa
Veteran Member
my opinion. 99.5-03 are the best years. 5 speed is the best trans. get an UltraGauge or scangauge to monitor mileage. read ecomodder to get more info about tire pressures, and if you want to venture into the best mileage numbers, read about some of the body mods on that site. i drive 120 miles a day, 90% highway.
i run 50 psi, have an Ultragauge, put on a few body aero mods and my last tank gave me 59 mpg. i also don't speed, can't have both worlds.
YMMV.
puntmeister
Veteran Member
I generally have run about 42 psi all-around. Of course, its been a battle, as I've been fighting what turned out to be a bad tire = every time I went to get it checked out, the shops did me a favor and knocked the tire pressure down to around 30 on all 4 (not sure where they are getting that # as the correct pressure).
I suppose I could/should do the research myself -but how much of a difference in MPG is there between running 40 versus 50 PSI?
I suppose I could/should do the research myself -but how much of a difference in MPG is there between running 40 versus 50 PSI?
deejaaa
Veteran Member
shadow4478
Veteran Member
Just got a good answer for Esso fuel cetane rating
Back to page one on this thread seems pretty good 51+
Not sure if this qualifies as official enough
http://forums.tdiclub.com/showthread.php?t=403987
Back to page one on this thread seems pretty good 51+
Not sure if this qualifies as official enough
http://forums.tdiclub.com/showthread.php?t=403987
abi
New member
I'm about to purchase a 2014 Golf TDI and wanted to know if any Sacramento, CA people knew of some good Diesel stations in town. BTW, this site is awesome.
Oreganoflow
Member
tridogg5250
New member
Just got a 2014 jetta sportwagen TDI (6 speed manual) and my first tank of gas i only got 30mpg. Hope it gets way better, i was hoping for 40. Second tank appears to be going about the same. Any imput?
steve05ram360
Veteran Member
Diesels are known for low mpg off the floor, let it breakin before getting concerned. 10k+ miles and you should start to see it going up.
![PressEnter[]](/data/avatars/m/322/322820.jpg?1598073269){kind=avatar}
PressEnter[]
Veteran Member
No way of telling without knowing more about your driving habits, tire pressure, and temperatures you've been experiencing. Here are some general tips, if you're interested:
http://ecomodder.com/forum/EM-hypermiling-driving-tips-ecodriving.php
Bobd
Member
20013 Sportwagen here
I bought a 2013 Sportwagen TDI with a DSG auto and 16 inch wheels on May 5, 2013. I had owned a 2003 Jetta with gas 1.8 turbo, auto and 16 inch wheels immediately before; my experience and thoughts.
With the 2003 Jetta I averaged 26 mpg driving a mix of 50% urban and 50% highway with 5 lights. With the Sportwagen in warmer weather I averaged 42 doing the same drive, dropped significantly (36 mpg) when temperatures dropped to single and teens (fahrenheit).
I significantly changed my driving after switching to the TDI. Initially I loved the torque, often finding it difficult to accelerate from a stop without a little wheel spin. Within a couple of weeks I settled into a more laid back drive being gentler with the accelerator. I used the onboard computer (both Average and Immediate) as well. My mileage results for the next 7000 miles were averaging 45 mpg with the above commute and 800 miles mostly highway (51 best mpg).
At times I miss the wild acceleration of the gas turbo but I enjoy the features and mileage of the Sportwagen more.
Note: the onboard computer does read high, I find it’s at least 1-2 mpg high.
I bought a 2013 Sportwagen TDI with a DSG auto and 16 inch wheels on May 5, 2013. I had owned a 2003 Jetta with gas 1.8 turbo, auto and 16 inch wheels immediately before; my experience and thoughts.
With the 2003 Jetta I averaged 26 mpg driving a mix of 50% urban and 50% highway with 5 lights. With the Sportwagen in warmer weather I averaged 42 doing the same drive, dropped significantly (36 mpg) when temperatures dropped to single and teens (fahrenheit).
I significantly changed my driving after switching to the TDI. Initially I loved the torque, often finding it difficult to accelerate from a stop without a little wheel spin. Within a couple of weeks I settled into a more laid back drive being gentler with the accelerator. I used the onboard computer (both Average and Immediate) as well. My mileage results for the next 7000 miles were averaging 45 mpg with the above commute and 800 miles mostly highway (51 best mpg).
At times I miss the wild acceleration of the gas turbo but I enjoy the features and mileage of the Sportwagen more.
Note: the onboard computer does read high, I find it’s at least 1-2 mpg high.
Bobd
Member
I've noticed a number of posts that recommend putting the transmission in neutral when going downhill. Some do this without specifying type of transmission.
This is fine with a manual but especially when the weathers warm to hot DO NOT do this with automatics. Doing so reduces the fluid flow and can cause the auto-transmission to overheat causing damage and transmission failure.
This is fine with a manual but especially when the weathers warm to hot DO NOT do this with automatics. Doing so reduces the fluid flow and can cause the auto-transmission to overheat causing damage and transmission failure.
Bobd
Member
I disagree, with my 2013 DSG driving through hills it's true that the transmission seems to disengage if at approximately 1800 rpm or below. Above that engine rev's remain high. I reduce speed so that engine revs are below 1800 on rural roads and rpms remain low even at 40-50 miles per hour.
I still maintain that the transmission loses lubrication or has a potential to overhead if in neutral.
Bobd
Member
Not so sure
First - I doubt the grill opening is truly closed, just a diverter shield. Also any engine’s airflow is largely a factor of volume and rpm. This would be the same whether gas or diesel. True it can be increased some using a turbo or supercharger.
Second – The noise from any VW diesel is likely well below any US standard for noise (would perhaps be marketing). I doubt that there is significant noise reduction.
Third – Maybe, I tend to think it’s widely varying air pressure that harder to control NOx levels due to the ram pressure variance. Also for most midrange and lower VW engines the differences between European and US versions are pretty minor.
Lastly – You found it much louder? Did you measure decibels before and after?
Sorry if I appear to be attacking but I’m mostly questioning. When making strong assertions it’s important to either backup with sources or qualify.
I’m having a few problems understanding your logic and points.
First - I doubt the grill opening is truly closed, just a diverter shield. Also any engine’s airflow is largely a factor of volume and rpm. This would be the same whether gas or diesel. True it can be increased some using a turbo or supercharger.
Second – The noise from any VW diesel is likely well below any US standard for noise (would perhaps be marketing). I doubt that there is significant noise reduction.
Third – Maybe, I tend to think it’s widely varying air pressure that harder to control NOx levels due to the ram pressure variance. Also for most midrange and lower VW engines the differences between European and US versions are pretty minor.
Lastly – You found it much louder? Did you measure decibels before and after?
Sorry if I appear to be attacking but I’m mostly questioning. When making strong assertions it’s important to either backup with sources or qualify.
Bobd
Member
I tend to avoid Cruise Control
Depending on how steep the grade is I'll speed up easy to as much as 10-15 mph downhill and crest the hill as low as -5 mph. For example traveling on I-95 between Philadelphia and Washington, DC I'll sometimes get to 75 mph downhill and crest the hill at 60 mph. When climbing the hill keep applying power, slowly easing throttle and allow the immediate consumption to increase.
As said in the title I do not use CC for best mileage. I move to the right lanes and let my speed drop a little.
Depending on how steep the grade is I'll speed up easy to as much as 10-15 mph downhill and crest the hill as low as -5 mph. For example traveling on I-95 between Philadelphia and Washington, DC I'll sometimes get to 75 mph downhill and crest the hill at 60 mph. When climbing the hill keep applying power, slowly easing throttle and allow the immediate consumption to increase.
Bobd
Member
Good Mileage for 2013 JSW
The rear intake in the air filter box should only open when cold and moderates temperate for emissions and performance. Tried disabling on a carbureted car and my carburetor froze up and the car stalled. Yes I'm that old. I'd would not block/disable.
I think so from my experience with my 2013 JSW in Washington, DC area. I do better in city than you but my city is 50/50 city/highway. My now mpg was on the Maryland Eastern shore at 51 though there was some traffic and lights.
The rear intake in the air filter box should only open when cold and moderates temperate for emissions and performance. Tried disabling on a carbureted car and my carburetor froze up and the car stalled. Yes I'm that old. I'd would not block/disable.
Bobd
Member
Bentley Manuals for 2012? on
Seems that Volkswagen and Bentley maybe parting ways, hope not. One of the things that attracted me to VW's is/was the excellent support available.Hi everyone,
I purchased a 2013 Passat TDI, SEl in December of 2012.
I Love this car. My best fuel mileage to date is 50.1 average
The car is fun to drive. I have never owned a diesel before, it's a lot to learn.
I still have my "Old Green", a 1999 Passat V-6,with 345,000 miles. Never had the engine apart.
Is there anywhere to get a Bently type of manual for the new Passat?
Bobd
Member
Questionable MPG with 2009
In the Mid-Atlantic area I stopped going to major chains for alignments (not sure if they did anything other than loosen and retighten bolts). The last 2 times I had cars in at two different chains they still were not right. Verified that alignment was off with 2 parallel strings, one on each side of the car, corrected myself.
The DSG transmission does not have a torque converter and mpg should not vary from a manual more than 1 to 2 %. Do not do the coast in neutral as often recommended, especially in hot weather fluid can overheat and not lubricated causing damage.
My 2013 with DSG automatic is getting just over 40 mpg driving 13 miles into Washington, DC. I drive gently now (in the top 20-25% vs. top 5-10% I used to do) You should be doing better.
Recommendations:
Ease up on the gas. I’ve found that very heavy to light foot can make as much as 20 to 25 % difference in mpg.
Have the alignment rechecked or attempt to verify yourself (toe is most important and easier to check).
Any error codes and even if not check plumbing under the hood.
Saw your July 2013 posts where you mentioned new alignment and disappointing mpg’s, don’t assume the alignment is right. How were the original tires, did they show alignment problems?
In the Mid-Atlantic area I stopped going to major chains for alignments (not sure if they did anything other than loosen and retighten bolts). The last 2 times I had cars in at two different chains they still were not right. Verified that alignment was off with 2 parallel strings, one on each side of the car, corrected myself.
The DSG transmission does not have a torque converter and mpg should not vary from a manual more than 1 to 2 %. Do not do the coast in neutral as often recommended, especially in hot weather fluid can overheat and not lubricated causing damage.
My 2013 with DSG automatic is getting just over 40 mpg driving 13 miles into Washington, DC. I drive gently now (in the top 20-25% vs. top 5-10% I used to do) You should be doing better.
Recommendations:
Ease up on the gas. I’ve found that very heavy to light foot can make as much as 20 to 25 % difference in mpg.
Have the alignment rechecked or attempt to verify yourself (toe is most important and easier to check).
Any error codes and even if not check plumbing under the hood.
rotarykid
Top Post Dawg
- Joined
- Apr 27, 2003
- TDI
- 1997 Passat TDI White,99.5 Blue Jetta TDI
There is no data that says the EU spec DSG is any different in design than the US/Canada spec offering. In Europe the DSG is programmed to shift into N automatically when in over run.
If lubrication while automatically shifting into N during overrun was such a problem they would not be programmed to do this. The DSG is filled with fluid temp, fluid flow & cleanliness, and shaft velocity sensors so unless they are throwing codes or causing the transmission to go into safe mode from use of N in over run I do not believe there is a issue. Most automatics have so many sensors that using N while in brief overrun poses no issues today...
And I have seen data in the last couple of years that is most of the current high-tech automatics shifting into N can reduce stress causing built up heat and wear so much that it can add years and many miles to their service life....
In slushbox automatics the friction from normal shifting, just staying in D while in over run or at a stop, and coming to a stop increases wear and can builds up excessive heat compared to shifting into N in these conditions. As long as the engine is running there is no threat to the transmission from using N in overrun, coming to a stop or while at a stop.
And DSG or not outside of extreme heat conditions coasting with the engine off for short periods of time really shouldn't be a problem compared to normal wear suffered under normal operation....
The only info I have been able to find on overrun use in a DSG is their fear of backlash from either a harsh re-engagement from excessive rpm difference from throttle input before the transmission is fully engaged again...
rotarykid
Top Post Dawg
- Joined
- Apr 27, 2003
- TDI
- 1997 Passat TDI White,99.5 Blue Jetta TDI
For this MY car NOx regs were significantly different on EU spec'ed models.... And even today our NOx regs are much more stringent than anywhere else around the world.
The most efficient models sold elsewhere around the world have significantly higher NOx outputs that far exceed our accomplishing nothing over-stringent current light duty diesel emissions today. That is the main reason we will likely never see any of the current bluemotion models, today they can't pass our less than useless current NOx emissions standards. The EU focuses more on CO2 emissions than NOx emissions so even the coming more stringent EU6 still doesn't equal current CARB/EPA NOx restriction levels today ....
I have seen test data that shows significant increases in NOx output from increasing fresh air input to increase mpgs on these models. Any increase in fresh outside air like the changes you question can easily cancel out EGR gains in NOx reductions. There is a member here "Wxman" is better at explaining emissions issues than I maybe you can query him about NOx....
I have also talked to someone that worked for VWAG in testing about NOx output along with my spoke of noise restrictions here a few years ago who told me much of what I describe above.
VW has spent a lot of testing time and design effort into cutting diesel produced sound from being noticeable in our market. And you would be surprised how little of a change to air intake it takes to reduce engine muffling.
I hope I have answered some if not all of the questions you have,,,.....
tdi_jetta13
New member
How is Irving diesel in the northeast
minis2003
Veteran Member
i been owning my 06 beetle BEW for a little over one month and my mpg has been lower then i thought it would be. the 3rd fillup was 41 (W/bio) so i was like GREAT then had to replace the MAF & fuel filter with cleaner diesel additives. dropped to 33mpg.
did TB change dropped to 27mpg.
went back to the shop to have them double check the torsion value (set at +.5)
and inflate the tires back to 40psi w/ bottle of diesel kleen
netted me 29mpg. going back to bio and see if that help me get back in the mid 30s or low 40s.
driving style has not changed and alignment done.
i have a honda Insight that gets mid 40s but the beetle is MUCH more FUN to drive
did TB change dropped to 27mpg.
went back to the shop to have them double check the torsion value (set at +.5)
and inflate the tires back to 40psi w/ bottle of diesel kleen
netted me 29mpg. going back to bio and see if that help me get back in the mid 30s or low 40s.
driving style has not changed and alignment done.
i have a honda Insight that gets mid 40s but the beetle is MUCH more FUN to drive