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VW Jetta TDI

3756 messages,  Last post on Dec 06, 2009 at 5:07 PM

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What is this discussion about? Volkswagen Jetta, Biodiesel, Diesel, Sedan


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#3072 of 3756
Re: new car purchase [ruking1] by longo2
Jun 28, 2009 (4:57 pm)
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Replying to: ruking1 (Jun 28, 2009 2:39 pm)

I read in one piece about the Honda Diesel speed tests, that the drivers of the vehicles got the 92 mpg figure when they drove them back to the city...
 
If that was the case, I wonder just how modified they were by the factory for the Speed Tests, and how much of that 92 mpg number is from the 'Outer Limits'.
 
In any case it's a shame that some sort of Diesel Conspiracy does seem to exist in the U.S.
Everywhere you look people are knocking them using stale data from the 8o's and just downright stupid remarks.
They are even usuing the oldest BS in the book to try and keep a lid on the subject, implying that diesel cars are somehow, "Un-American" in the 'comments' on published Jetta TDI tests in magazines and internet articles.
#3073 of 3756
Re: How long a cargo box can go on my JSW TDI? [tangledup625] by jogousa
Jun 28, 2009 (4:58 pm)
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Replying to: tangledup625 (Jun 28, 2009 11:26 am)

I just got rid of the cargo box (Thule) on my Tdi Wagon. It takes 4 people (depending on size) to put it on and off. If you move it forward enough, it clears rear hatch. It's never too forward. I would go with Thule rather than Yakima (but that is my preference - I always had the largest Thule box on my cars). You have to remove the antenna though... But the wagon does not look right with the huge Thule box on top!
Then I have tried Mont Blanc cargo tray/platform and got rid of that one as well (too noisy when driving with open moon roof and too small to load anything on it.
I think I am going to try now Westin aluminum cargo tray - the large size.
If that does not work, I have a trailer hitch now installed and I will try some of the platforms in the rear. It's an on going project now. Haven't found the solution yet.
#3074 of 3756
Re: new car purchase [gagrice] by longo2
Jun 28, 2009 (5:08 pm)
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Replying to: gagrice (Jun 28, 2009 3:40 pm)

OK, I found the item and here it is. Now as I re-read it, it is even more depressing than before. Seems that everything about the Honda diesel speed records was on the up and up......................
 
"Amongst the speed records set, which were all achieved in Production Car Class B (2000 – 2500 cc), were 133.04 mph (1 mile flying start), 84.25 mph (1 mile standing start) and an average speed of 130.38 mph over a 24-hour endurance period. These records were all set at Papenburg high-speed oval test track in north-west Germany on 1 and 2 May, and are all subject to FIA ratification.
 
Two production cars, randomly selected by FIA officials, were used to undertake the speed records, and apart from the fitting of roll-cages, racing harnesses and radio equipment for track-to-pits communication, no other modifications were made to the cars.
 
Following the speed record attempts, the same two cars were then driven 419 miles from Papenburg test track to Wiesbaden, near Frankfurt in order to complete the fuel economy run. The route comprised of a mixture of motorway and non-motorway driving, during which one of the Accords achieved a staggering 92 imperial mpg (US mpg=~76.6) average.
 
The project, whose aim was to demonstrate the performance and economy of the Accord i-CTDi, was a joint production between Honda, the FIA and Italian-based JAS Motorsport, who managed fuelling and pit-stops.
 
Honda UK’s driver in the speed record attempt, Robin Liddell, who has previously raced at Le Mans 24-hours, as well as the American Le Mans Series and the BRDC British GT championship, commented: "The car’s performance is very impressive, demonstrated by the records we’ve achieved. Honda has made real steps forward in styling, ergonomics and interior design with the new Accord Diesel and now has a package that can take on the best cars in its class."
 
Too bad we won't get a chance to drive one.
#3075 of 3756
Re: new car purchase [Mr_Shiftright] by jogousa
Jun 28, 2009 (5:15 pm)
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Replying to: Mr_Shiftright (Jun 28, 2009 1:17 pm)

You may be right there but all it needs is to tax the gas the way they tax it in EU and give a break on diesel tax and the public would go for it.
In many EU countries some people now mix diesel with cooking oil half and half to save money. EU is considering clamping down on this "tax evasion" - they may tax McDonalds and other fast foods that sell used oil through back doors and people are mixing it with diesel (my friend from UK that works for Aston Martin and drives a Subaru Forester diesel there is telling me....).
Problem with hybrids is that technology is now already old and aging. There hasn't been any new technology introduced in the past 10 years, since hybrids were introduced. Another argument is that most cells (if not all) come from China - so instead of being dependent on Middle East oil we will be dependent on Red Chinese... seems like an average American would rather be dependent on China than Middle East, right?
#3076 of 3756
Re: new car purchase [ruking1] by m6user
Jun 28, 2009 (6:12 pm)
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Replying to: ruking1 (Jun 28, 2009 1:32 pm)

VW gets a very respectable 24 mpg on its gasser Jetta's. The like model (diesel 09 Jetta TDI, DSG) on the other hand is almost literally vilified for getting 38 mpg or 58% BETTER fuel mileage !!!!!?????
 
If you use the EPA average mpg for the 09 Jetta gasser, why not use the same criteria when comparing to the 09 Jetta TDI? The EPA avg mpg for the TDI is 33mpg, not 38mpg. Where does the 38mpg come from. Is it some kind of official statistic or is it the result of several TDI affectionados. Some TDI owners get substantially better than the EPA avg and I believe there are probably some gasser Jetta owners that get better than the EPA avg as well. I'm not bashing TDIs by any means but I just like to see statements that appear as fact not be backed by a few people that either are hypermilers or close to it. I see one guy on the Camry forum that is consistenty getting 40mpg out of a reg gasser I4 Camry. That is not the norm by any means and is questionable in my opinion.
 
The EPA website has the Jetta gasser getting a little better than the stated avg with 2 drivers reporting. The Jetta TDI has an average of 40mpg with 21 drivers reporting. While that sounds great and I have no reason to doubt them, it is still just 21 drivers out of thousands which may be as small a sample as 1% or less.
#3077 of 3756
New TDI by mike91326
Jun 28, 2009 (6:59 pm)
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I just got a new Jetta TDI sedan with DSG. Since this is my first diesel I want to break it in right. How should I drive it over the next 1000 miles to get the best results?
#3078 of 3756
Re: new car purchase [m6user] by ruking1
Jun 28, 2009 (7:06 pm)
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Replying to: m6user (Jun 28, 2009 6:12 pm)

Not an issue, then use 33/34 mpg. It is STILL 42% better !!!! ???
 
I get an average of 42/43 (79%) and I am NO hyper miler. Indeed the thing will not be broken in for least another 3,000 miles, with 10,000 to 60,000 miles "full" break in. So there is an expectation the mpg will go up from there.
#3079 of 3756
Re: New TDI [mike91326] by ruking1
Jun 28, 2009 (7:07 pm)
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Replying to: mike91326 (Jun 28, 2009 6:59 pm)

You may want to re-think break in to a MINIMUM of 10,000 miles. Full break in more like 10,000 to 60,000 miles.
 
Break-In Period
#3080 of 3756
diesel power service by ndmike88
Jun 29, 2009 (3:30 am)
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Anyone use it? Does it really help with the TDI performance? I know it boosts the cetane in the diesel fuel but does it really work? Is it VW approved?
#3081 of 3756
Re: New TDI [mike91326] by cosmo
Jun 29, 2009 (5:08 am)
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Replying to: mike91326 (Jun 28, 2009 6:59 pm)

ruking1's link is right on. A no-brainer method is to drive in sport mode for the first 5K. Do not go on any long freeway cruises and do not concern yourself with fuel mileage during the first 5K.

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