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What Would It Take for YOU to buy a diesel car?

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Comments

  • ruking1ruking1 Member Posts: 19,826
    edited February 2012
    Indeed that is inherent with the EPA tests and EPA bold print and FINE print, giving the more diverse ranges. EVERY new car sticker has this. So since I referenced 2009 TDI (DSG), the bold print EPA 29 C (small print: expect range for most drivers 24 to 34 mpg)/40 H (small print: expect 33 to 47 mpg) So it would be a no brainer to say the fuller range is 24 mpg to 47 mpg. Now I have posted 47 mpg on a tank full, but even I was surprised.

    Now this is NOT to say that his (busiris's) explanation of statistic sampling methods has no traction. It is a tad like asking what time it is and being given explanation of how to build a time piece. Boiler plate that most folks ignore: Your actual mileage will vary depending on how you drive and maintain your vehicle. Interestingly enough it says to see the free fuel economy guide at the dealers or www.fueleconomy.gov.
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    edited February 2012
    And VW would tell you, no, that's what the EPA predicted and that's too bad for you if you didn't read up on that before you bought the car.

    I mean, if one were to disregard all the published info and instead rely on what one overheard in a bar before shelling out 25 big ones on a Jetta TDI, then they roll bigger dice than I do I guess. :shades:
  • ruking1ruking1 Member Posts: 19,826
    edited February 2012
    While it pains me to say this, what YOU say "they" would say is TRUE. The corollary would be what I am posting, THEY DID NOT PROMISE !!!! Indeed they post COMBINED @ 33 mpg. Again, if I got what they stated as combined, I would think something seriously wrong with the car.
  • cdnpinheadcdnpinhead Member Posts: 5,618
    edited February 2012
    Five Imperial gallons are approximately equal to six U.S. gallons. There are 128 fluid ounces in a US gallon and 160 fluid ounces in an Imperial gallon, but the fluid ounces are different, such that the 5/6 ratio applies. This is something I know quite a bit about.

    It also helps explain why the metric system is used everywhere in the world outside of the U.S. and Liberia. Fuel is sold by the litre in the UK, but the roads are still calibrated in statute miles, and MPG using the Imperial gallon is still prevalent there, but litres/100 km is the metric standard on the continent.
    '08 Acura TSX, '17 Subaru Forester
  • busirisbusiris Member Posts: 3,490
    Well, there are only 3 possibilities when you flip a coin... Heads, tails and the side. So, in that case, in an environment where the coin tossed had no idea of how many sides the coin had, probably a round of between 5-10 tosses would be convincing.

    Surely, you would admit that FE is a bit more complicated than either heads or tails. Either the engine runs or it doesn't, but at what FE?

    Now, as diesels compare to gassers, and this is historically speaking, I agree... Diesels have almost always (maybe even 100% of the time) delivered better FE than gas engines...that's pretty much a given.

    I never meant to come across suggesting otherwise.

    I don't know if that trend will remain. Gas engines, with all the latest tech gadgetry are getting damned efficient.

    My only intent was to demonstrate the significance of an appropriate number of samples when calculating specific odds.

    Five flips may give you a great idea of the number of sides a coin has, but five draws would be totally insufficient to tell you (reliably, at least) how many cards are actually in a deck of 52.

    As a final note, I once owned a 2005 Chevrolet Aveo. I didn't get anywhere close to the FE estimates, which I found a bit strange, since my driving style almost always allows me to exceed estimates. Over on the Edmunds Aveo forum, if you go back years, you will find the actual mpg numbers running "soup to nuts" on the Aveo.

    The point is, a couple of samples on the Aveo FE were meaningless.
  • ruking1ruking1 Member Posts: 19,826
    edited February 2012
    To bring this up (Lemmer) time and time again is really a waste of bandwidth. I think it is inherent to do the conversion, as the US audience uses non metric. Even non US posters understand to do the conversion.
  • ruking1ruking1 Member Posts: 19,826
    edited February 2012
    Well I have got to concede your point, even YOUR experience was ... meaning less. I mean, you say you got what you got. But on the other hand, perhaps the stated EPA was just REACHING and your results were FAR more real !! ??
  • steverstever Guest Posts: 52,454
    Hey, my food scale and my tape measure are both metric. :P
  • ruking1ruking1 Member Posts: 19,826
    Wise guy !! ;)
  • steverstever Guest Posts: 52,454
    :)

    Go figure this one out now:

    Loss of diesel-rich crude sends oil prices higher (financialpost.com)
  • ruking1ruking1 Member Posts: 19,826
    edited February 2012
    I have to laugh when I read stuff like this.

    Let's see:
    The article you post> Price goes up.
    Armageddon is due 03/33/33 @ 333 am Price goes up
    Armageddon is unknown. Price goes up
    Using electric motivation. Price goes up
    Using sun and wind. Price goes up
    The supply goes up. Price goes up.
    The supply goes down. Price goes up
    Demand goes up. Price goes up.
    Demand goes down. Price goes up.
    Export of diesel goes up. Price goes up.
    Export of diesel goes down, Price goes up.
    Straits of Hormuz free and unencumbered. Price go up
    They hate us. Price goes up
    They love us. Price goes up
    Threaten with blockage> Price goes up
    We are recognized internally as Beyond Saudi Arabia of Coal. Price goes up
    We are recognized internally as beyond Saudi Arabia of Natural Gas. Price goes up.
    Natual gas is at 10 year historical low prices. Price goes up
    NON Brent crude much lower than Brent crude. Price goes up.
    Canada overflowing with oil wants to sent to US. Price goes up.
    Keystone XL disapproved. Price goes up
    Passenger diesels limited. Price goes up.
    Passenger diesels growing. Price goes up
    Obama wants re election. Price goes up
    Romney has Swiss bank accounts. Price goes up
    They want less taxation on diesel. Price goes up
    They want more taxation on diesel. Price goes up

    It is hard for me to see a nexus (connection) here!! :sick: ;)
  • steverstever Guest Posts: 52,454
    I think you got it.
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    Sometimes I think that claiming to "own" the oil is like claiming to "own" the Grand Canyon. :P

    Tell me again why averaging out all the longterm tests on the Internet from credible sources isn't a good indicator of actual MPG one is likely to get. These people drive the cars, using multiple drivers, for a good many months, so why can't we assume, that averaged out, we've pretty much reached the sweet spot in the bell curve?
  • ruking1ruking1 Member Posts: 19,826
    edited February 2012
    Using the published stuff (new car stickers) on the 2009 Jetta TDI of 24 to 47 mpg, would that answer the question.? Or how about the X Country record of what 58 mpg being set with a 2009 Jetta TDI ? Could I get closer to 58 mpg? Probably, but I know I would be bored beyond reason doing it.
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    Not for me. I don't rely on window stickers and I don't rely on anecdotal evidence. I'm more comfortable with lots of cars being driven by lots of drivers. 58 mpg simply can't be in the center of the bell curve, so to be fair, I would throw out both extremes, of both 18 mpg and 58 mpg right off the bat.

    Now keep in mind I'm searching for a likely real world average as a potential buyer---I'm not out to prove or disprove the person getting 18 mpg or 58 mpg.
  • ruking1ruking1 Member Posts: 19,826
    edited February 2012
    I would say, so what? Perhaps you are the 18 or 58 mpg driver, then what? Again I mentioned that you know best how YOU drive (or anyone else does also). You then find/guess your place in those stated ranges. Naturally anecdotal data confirms or denies whether you have been correct or not.

    So for example, while I am glad that woman won her Civic Hybrid case in small claims court ($10,000 maximum in small claims court), as she would have gotten FAR less in more normal litigation channels, there has to be a travesty of justice, as there is no way that Honda advertised 50 mpg. Again there probably was a RANGE and epa 50C/50 H ratings. I do not know what the sticker says but edmunds.com lists 40-45 mpg. So for example for the price premium and the fact that we post 38-42 mpg on a Civic NON hybrid NO WAY I would get a Civic Hybrid.
  • gagricegagrice Member Posts: 31,450
    I wondered when this discussion would come around. This statement is so true.

    But not all crudes are the same. Libya’s civil war had an outsized impact on the oil market last year because the low-sulphur crudes which the country exported were difficult for refiners to replace elsewhere.

    The crude in the Prudhoe field went from a tar like substance to a light sweet crude that was used directly in the diesel generators. We could care less about Iran oil as it has a lot of sulfur. So why not put an embargo on it? Saudi oil is generally pretty decent stuff. Then you have to take into consideration the 1000s of products that are made from crude oil. From cloths to tires to roads. I don't think the gas and diesel are the big money makers in a barrel of crude oil. It was not that long ago that gasoline was a useless byproduct that was dumped.
  • ruking1ruking1 Member Posts: 19,826
    Indeed what you are saying is true. That is why bio diesel from algae makes SO much sense. Natural gas also, etc. Perhaps the dynamics would change if they built a society around algae bio diesel by products. There is literally not ANYTHING that is not touched by oil. So when you crash the markets for all those other items it does no one any real good????
  • busirisbusiris Member Posts: 3,490
    So, it would appear you prefer more samples .vs. less samples, if for no other reason than to rule out any bias, both positive and negative.... As it relates to FE numbers.

    And, that's the logical way to approach it.

    Having knowledge of the person getting the high/low FE can cut the number of samples needed to get a level of comfort.

    If one knows that low FE is being obtained by Lead-foot Larry, we can factor that into the analysis. Conversely, if we know Harry Hypermiler is reporting excessive FE, the same applies.

    The real question is how many standard deviations do you go before one determines, as you said, we're too far outside the accepted norms?
  • busirisbusiris Member Posts: 3,490
    What's being omitted in this discussion is the effect the futures markets have upon pricing.

    The actual cost of production/delivery does matter in the long term, but over the short haul, the market pricing is far more under the influence of folks placing bets on the future.

    Production of crude rarely changes from today to tomorrow, yet the futures price often does. Now, add in the other factors (to name just a few: perceived availability of transport mechanisms, demand, supply, available refining capabilities, political projections.... It's a really long list).

    It's much like gambling. Come to think of it, that's exactly what it is. When one guesses wrong, like a gambler, he covers his losses so he can stay in the game.

    Let's not kid ourselves. These folks know how to play the game...
  • busirisbusiris Member Posts: 3,490
    edited February 2012
    The fact that FE for that make and model was all across the board indicates that something was amiss.

    After all, I don't drive one car any different than another (easy .vs. foot in the injection unit).

    Assuming the EPA standards are equally applied to all car models, I should have a reasonable expectation that my experience in any one car should be indicative in all cars, given that they are similar cars (sedan .vs. Indy car, as an example). And, that has indeed been my experience.

    If I drive 10 similar cars and get better than the suggested EPA FE in each one, I should have a reasonable explanation that the 11 th car will respond accordingly.

    I know that's not a scientific analysis, but it is a logical conclusion.
  • gagricegagrice Member Posts: 31,450
    I just wish they would bring the price of diesel down below regular gasoline so this would get back to what we look for in a diesel vehicle. For me buying a diesel vehicle will require one being available that I feel fits all my needs. Currently none exist in this country. :sick:

    PS
    No gasser is even close.
  • busirisbusiris Member Posts: 3,490
    I agree... There's little question that Europe has a much better selection of diesel vehicles.
  • gagricegagrice Member Posts: 31,450
    One of these days I just want to take off and discover America. It would be nice to have a mid sized SUV that is off road capable and gets 30-35 MPG on the highway. At least half a dozen are sold in the EU NONE IN THE USA. I had a Mercedes Sprinter RV that would get 25 MPG cruising all day at 70+ MPH. That was a great engine Transmission combo. They put a bigger engine and now you are lucky to get 21-22 MPG. The MB Cruiser was fine until you passed a big truck. It was so tall the wind would buffet you around. Made it somewhat stressful on the interstate. But over all a great vehicle.
  • ruking1ruking1 Member Posts: 19,826
    edited February 2012
    Well yes it really gets back to what I said to Shiftright about people knowing how they each drive, finding yourself in the mix and checking it out. It is also what I said that the figures are also inherent in the duplicatable EPA tests. So in effect you are agreeing with my conclusion.

    Now Shiftright has stated a preference for "re inventing the wheel" so to speak or independent gathering of anecdotal data. My take is those oem are paid to do the research anyway.

    Now since we are on the diesel thread how a diesel is driven has different dynamics than a like gasser.

    Off topic but applicable is that a smaller engine gasser hybrid (Prius for example) has different dynamics than either a gasser only AND turbo diesel.
  • qbrozenqbrozen Member Posts: 33,736
    I could be wrong, but I think its a standing start. Wouldn't make sense to me otherwise (as it is supposed to test the overall performance package). So I do indeed think the TDI is catching up in both cases.

    You are right, though, in that the TDI is horribly overpriced. And, without looking but knowing how the Germans and Japanese typically package their vehicles, I'd bet you get alot more standard on the MDX.

    '11 GMC Sierra 1500; '98 Alfa 156 2.0TS; '08 Maser QP; '67 Coronet R/T; '13 Fiat 500c; '20 S90 T6; '22 MB Sprinter 2500 4x4 diesel; '97 Suzuki R Wagon; '96 Opel Astra; '11 Mini Cooper S

  • ateixeiraateixeira Member Posts: 72,587
    If these guys were right and you really could get a huge increase in MPG with a diesel, would you buy one?

    Sure, if the economics made sense.

    By that I mean if I'm shopping in, say, a $25k price class, and the diesel is $32k, then heck no, no matter how much extra equipment they add in.

    If it's $1500 more and I make it up within 5 years, then sure.
  • gagricegagrice Member Posts: 31,450
    When I bought my 2005 Passat Wagon, the TDI MSRP was only $200 over the standard engine and less than the V6 gas engine. When I sold it a year later with 8500 miles on it, the phone just would not stop ringing. I Sold it for $3000 more than I paid for it brand new. I bought it in Oregon, licensed it to my residence in Alaska and drove it all over CA. The big selling point when I put it on Craigslist was it was now legal in CA with 7500 miles on the Odometer. First person with the cash was a buyer from Prescott AZ. It was a great little car. The 80 year old couple I sold it to have made several trips back to visit family on the East coast. Have not heard from them now for about a year.

    If I wanted one of the Sportswagens or other diesels currently available, I would wait until the market is a bit better saturated. Right now you would be hard pressed to get much off of MSRP. Only two Sportswagen TDIs available in San Diego County. Selling for $27k-$29K. My wife's grand daughter just bought one and could not get them to throw in the Splash Guards at MSRP. She did get the 1.9% financing.

    My local Shell has RUG at $3.89, Diesel at $3.99. I expect gas over $4 by March.
  • ateixeiraateixeira Member Posts: 72,587
    Found a link with a little bit of clarification:

    Run on the outside of two 200-ft diameter circles, the test essentially makes for a portable road course. It throws test subjects into handling extremes; in a given run, a car travels from full-throttle acceleration to full braking and then must transition into a constant-radius turn.

    Out of the test come three scores: Time, average g-force, and lateral acceleration. The first is the fastest lap time from a given set of runs.


    Read more: http://wot.motortrend.com/best-handling-cars-weve-tested-motor-trends-top-figure- 8-performers-3095.html#ixzz1mMv6M6wC

    The way I read that, it's a running start (set of runs = lap 2 quicker than lap 1 standing start).

    Also, with small diameter circles, I doubt speeds ever exceed the 1/4 mile trap speed, and the MDX is moving quicker the entire time. The TDI starts to close the gap, but it's merely losing by a little less.

    The MDX is geared to be quick off the line, so F/E is a fair trade-off. It offers a 3rd row and 141.8 cubic feet of total volume vs. just 131 for the smaller Touareg. MDX also crushes on max cargo volume at 83.5 to just 58.

    Touareg is too small for me, without a doubt. I think even the MDX is borderline.
  • larsblarsb Member Posts: 8,204
    That's funny - I don't remember a fine intro greeting like that when I started posting....... :confuse:
  • ateixeiraateixeira Member Posts: 72,587
    I always wondered why you sold it. That explains it.

    To me, a Passat wagon makes *TOTAL* sense. Far more efficient than a Touareg, and a quick search says it has 61 cubic feet, so more space. All for less cost.

    You give up AWD and clearance, of course.
  • ateixeiraateixeira Member Posts: 72,587
    Well, that was 8 years ago and you may be having a geezer moment. :P
  • busirisbusiris Member Posts: 3,490
    Evidently, the EPA didn't think the OEM crowd was doing such a good job of gathering data back in 2005, as it related to FE.

    The testing standards were significantly revamped in the latter half of the decade in order to provide much more real-world results.

    http://www.epa.gov/fueleconomy/420f06069.htm
  • larsblarsb Member Posts: 8,204
    You just happened to hit it in a time where the demand FAR outstripped the supply.

    Good for you.

    No one is getting $3000 more than they paid for any diesel car these days.
  • ruking1ruking1 Member Posts: 19,826
    edited February 2012
    That was their take. The truth was more like the 2004 Prius 50/60 mpg brohaha. The so called real world values were 40-45 mpg. This lead to politicalization of the previously duplicatable (30 plus years) EPA tests. The tests now favor hybrids even as diesel do way better than what they get rated at.
  • ateixeiraateixeira Member Posts: 72,587
    The EPA test wasn't designed for hybrids, so it had to be revised.

    It's very likely Toyota knew how to exploit that to generate huge numbers (61/50 IIRC).

    They had to revise them again for EVs, to create MPGe. Even now the cost estimates for energy are seriously optimistic.
  • ruking1ruking1 Member Posts: 19,826
    edited February 2012
    During the 2008/2009 car markets the yearly sales went from so called good years of 14-16 M unit sales to something like 9.5 to 10 M in sales a 41% decline. Tax credits for some special program cars and cash for clunkers came on line for those brief periods. In addition the average age of the passenger vehicle fleet went from something like (real OLD) 9.5 years old to 10.8 years old (even older), currently.

    So I have read in several places that the pace is 14M aka getting badk to a "good year". Prices now are higher percentage wise and discounts are fewer.
  • larsblarsb Member Posts: 8,204
    There's no way to "exploit" the test. It's the same test, whether the manufacturer does the test or it's done in the EPA labs.

    This subject was thoroughly hashed out on one of these forums a couple or three years ago.

    These tests are thoroughly documented and certified. No carmaker has ever been accused of cheating, and they could NOT cheat. Everything is chronicled to the nth degree.
  • ruking1ruking1 Member Posts: 19,826
    edited February 2012
    Oh for sure they called in the lobby chits. The EPA was forced to come up with new test procedures despite the fact the old ones were perfectly fine and duplicatable. They can not admit they were forced to change it due to political pressure and for political reasons.

    I have said this in other posts. However if it is tiresome I will stop. If I drove the 2004 Prius like I drove the 2003 Jetta TDI (50 mpg), the Prius would get far LESS mpg (SWAG only 38-42). If I drove the Jetta TDI like a Prius should be driven to get 50 + mpg, I would get more like 60 + on the Jetta TDI. (Keep in mind the 2004 Prius is rated FAR higher at 50 H and 60 city vs 2003 Jetta TDI @ 42 city and 49 highway.)
  • lemmerlemmer Member Posts: 2,689
    Hyundai has been accused of fudging the Elantra numbers.
  • ateixeiraateixeira Member Posts: 72,587
    What I mean is the ECU can be tuned to achieve ideal economy in that particular lab test, which was hard to match in the real world.
  • ateixeiraateixeira Member Posts: 72,587
    Accused, yes, yet in Consumer Reports their two volume sedans are at the top of their classes (Elantra and Sonata), with class leading MPG.

    All things being relative, seems fair enough.
  • lemmerlemmer Member Posts: 2,689
    Meanwhile, the rest of the universe seems to average about 39 MPG in a Jetta and 45 MPG in a Prius in normal driving.

    What is all this how the cars "should be driven"? 99% of the driving public mushes the gas pedal when they want to go and mush the brake pedal when they want to stop. If they want to increase their rate of acceleration or decceleration they mush harder. That is about the extent of the thought process.
  • lemmerlemmer Member Posts: 2,689
    edited February 2012
    Consumer Reports averaged 29 MPG in the Elantra. That is pretty bad compared to the EPA numbers.
  • ruking1ruking1 Member Posts: 19,826
    edited February 2012
    I think it gets back to the posts I made about RANGE's. Probably the reason why Prius drivers seem to get higher mpg (45) is they are dialed into the "bio feedback " tools on their dashboards, knowing that if they drive like you say fuel mileage will not be as good. It is a point of testosterone for Prius owners to get higher fuel mileage.

    So here are some of the postings on wwwfueleconomy.gov for

    1. 2003 Prius 45.4 mpg,
    2. 2004 Prius 47.5 mpg,
    3. 2003 Jetta TDI 46.4 mpg
  • ateixeiraateixeira Member Posts: 72,587
    Compare to other CR results, though:

    Cruze 26
    Focus 28
    Sentra 27
    Mazda3 28

    Only the Civic and Corolla did better.

    So relative to its competitors it still did quite well.
  • ateixeiraateixeira Member Posts: 72,587
    Prius would get far LESS mpg (SWAG only 38-42)

    The only way you would do that poorly is via sabotage.

    Even CR, which gets relatively low MPG numbers, managed 44. The Jetta TDI got just 34mpg, way behind the Prius.
  • qbrozenqbrozen Member Posts: 33,736
    Interesting. I still don't know, though. Even found this video. But they never say if its a hot lap or standing start.

    I read "set of runs" differently since, in autoX, we get a "set of runs," which, as you know, involves a standing start for each run.

    I'm really curious about this now, though. Not so much for our discussion, since I still don't think it matters much for SUVs, but just in general.

    '11 GMC Sierra 1500; '98 Alfa 156 2.0TS; '08 Maser QP; '67 Coronet R/T; '13 Fiat 500c; '20 S90 T6; '22 MB Sprinter 2500 4x4 diesel; '97 Suzuki R Wagon; '96 Opel Astra; '11 Mini Cooper S

  • ruking1ruking1 Member Posts: 19,826
    LOL. You are the same guy who said that 2 postings are meaningless. Now you want to build your case on ONE posting (CR) ???
This discussion has been closed.