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The Future Of The Manual Transmission

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  • steverstever Guest Posts: 52,454
    edited May 2012
    I've always heard (in the last decade anyway), that automatic gassers burn zero fuel coasting in gear. They use fuel coasting in neutral, otherwise the engine would die. Coasting in gear keeps the engine turning but the injectors turn off.
  • volkovvolkov Member Posts: 1,306
    I have no doubt that they may be drawing essentially no fuel coasting, but if they are slowing you down so rapidly, you are required to keep your foot on the gas significantly increasing consumption.
  • ruking1ruking1 Member Posts: 19,826
    edited May 2012
    I am not so sure. Diesels with manual transmissions already have the stop/start feature/option in Europe. I have read that BMW diesels have the option. So far there has been no negative feedback to reach across the pond.
  • ruking1ruking1 Member Posts: 19,826
    edited May 2012
    We have app 36,000 miles on a VW TDI DSG. For the first 10,000 miles the jury was out on whether I REALLY liked it or not. In some ways, I used to wonder out loud why they have the sequential gear shifting. So in the process of TDI engine break in I pretty much got the shift gate side out of my system. What I have since found is I normally just put it in D and DRIVE. Early on I was convinced not to compare it to the A/T, BUT the hand eye and muscle memory was a tad lagging behind. However I am convinced that if VW had put an A/T in it the mpg and other things would be less.

    One thing I look forward to is the 110 miles downgrade coming down out (7,200 ft) of Lake Tahoe, CA to sea level. Now grant you, it is hard to keep a steady 85/90, but if you just let it coast you can surely do 65/70 mph. ;) I am sure the mpg would be pretty good over the following sentence. Incidently R/T (i.e. sea level to 7,200 ft and return to sea level) it normally posts 42/44 mpg. The EPA is @ 40 H.
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    edited May 2012
    the automotive press has made mention of it---not that stop/start is *awful* in a diesel, but that you notice it every time it happens, whereas with a gas engine car you simply don't. This makes sense with a compression-start engine, that it would vibrate and be noisier.
  • ruking1ruking1 Member Posts: 19,826
    So while I would not discount what is being written, or what you say, one thing that I have found true is who really knows how it ends up being in the US market version/s.
  • eliaselias Member Posts: 2,209
    I strongly prefer a slushbox/hydraulic/torque-converters-for-top-gears type of automatic transmission. I suppose this is manual-shift related. A survey. For those of us who prefer manuals, which is your favorite & least favorite type of automatic.

    Survey. Automatic transmission preferences for a manual-transmission person:

    Favorite: old-school hydraulic/lockup-torque converters.
    Hated it: CVT. (had minicooper with CVT in the househould)
  • eliaselias Member Posts: 2,209
    edited May 2012
    all modern cars use zero fuel while coasting. it has nothing to do with transmission type or fuel type. this has been true for ~25 to ~35 years or mor, and became true as fuel injection became common.
  • ruking1ruking1 Member Posts: 19,826
    edited May 2012
    One can use that knowledge (mainly gravity and the zero fuel draw) to post pretty impressive down grade mpg numbers. Of course to get impressive R/T numbers, one has to attack the upgrade portion with the same goals and different tactics in mind. On the upgrade portion, the TDI has the slight advantage, as it functions better under a slight to aggressive loading.

    It would also appear that the diesel has the slight advantage on the downgrade also (given Volkov's post of strong engine braking on a DSG) as it has WAY reduced engine braking (TDI/DSG combination).
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    Road & Track gives the domestic BMW diesel a grade of "C" in start/stop, the worst of all the ones tested.
  • volkovvolkov Member Posts: 1,306
    I was being circumspect so as not to rekindle an old tedious debate. BUT Coasting with clutch in or in N requires a small amount of fuel or the engine would shut down.
  • volkovvolkov Member Posts: 1,306
    I wouldn't want to answer that question b/c the strokes are too broad.
    There are old fashioned ATs I've driven that were good and others which I hated. Same goes for MT. 4sp in my wife's 88 Tercel and the 91 Pathfinder were awful - my 89 Civic was sweet.
    For driving experience I would probably take the DSG as it does allow semi-manual driving.
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    You wanna experience a really bad automatic, drive a Smart Car.
  • xwesxxwesx Member Posts: 17,680
    I would have to spend far more time "real world" driving a CVT to make an informed choice on the matter.

    In the twenty minutes I drove a 2011 Legacy Limited (EJ25 w/ CVT), I found it to be a very nice automatic transmission. It was far smoother than any other I had ever driven, with ample and responsive power delivery. Of course, it also had paddle shifters, which I used for part of the drive, and those allowed for mimicking the familiarity of a "regular" automatic.

    Taking nothing else into consideration (towing, durability, etc), I would prefer that transmission over the 4EAT previously offered with that engine.
    2018 Subaru Crosstrek, 2014 Audi Q7 TDI, 2013 Subaru Forester, 2013 Ford F250 Lariat D, 1976 Ford F250, 1969 Chevrolet C20, 1969 Ford Econoline 100
  • ateixeiraateixeira Member Posts: 72,587
    Agreed, Smart ForTwo has the worst transmission I've ever sampled in my life.

    Toyota MR2 SMG was a close 2nd.

    I think the automated manuals are the worst, neither here nor there, expensive, not smooth, etc.
  • dudleyrdudleyr Member Posts: 3,469
    I don't think my Accord cuts fuel when coasting in gear. My scanguage still shows that the throttle is open and fuel is being used.
  • ateixeiraateixeira Member Posts: 72,587
    I feel like my Toyota does instantly, but our Subaru (a PZEV) does not. The latter holds the revs up, even, when you let off the throttle.
  • steverstever Guest Posts: 52,454
    "Stick shift-loving M owners should prepare for bad news, because BMW will only engineer the next M5 or M6 with double-clutch transmissions.

    M's head of engineering, Albert Biermann, admitted this week that there were no plans to fit three pedals in the next-generation M6 and M5 because the order rate was too low to justify the added work."

    BMW Official Says No Manual Transmission for Next M5 (Inside Line)
  • nippononlynippononly Member Posts: 12,555
    and so it begins... :-(

    The day can't be that far off when the WRX and the Corvette are CVT-only (with totally crappy electric steering of course, because saving that extra gallon of gas per year really was THAT important).....but what does it matter, by then everyone will be plugging in their destinations on their touch-screen interface and answering e-mail while the computer guides the car....since no-one will be driving anyway, what difference does it make what transmission choices we have?

    Sigh.

    2014 Mini Cooper (stick shift of course), 2016 Camry hybrid, 2009 Outback Sport 5-spd (keeping the stick alive)

  • colin_lcolin_l Member Posts: 591
    I doubt very much that CVTs are going to be the only transmission in the future. A sequential dual-clutch manumatic has some big advantages, for performance cars at least.

    FWIW, I'm 5 days into giving up my 3rd pedal for an Audi with a DSG and I sure don't miss it.
  • ruking1ruking1 Member Posts: 19,826
    edited June 2012
    I am sure you are going to a DSG (TDI I presume) from a 6 speed manual for a reason. Just make sure you are happy with the DSG on a real world, practical level BEFORE you make the leap. There are certain characteristics that are unlike a slush box automatic, IF that is one of your main criteria for "happiness. " I very rarely use the sequential shift gate portion. When I do it is usually to adjust my space cushion (following distances) or adjust going down longer type grades.

    To me anymore, I pretty much go effortlessly between 4 speed slush boxes, 6 speed manual, 5 speed manual, and 8 speed automatic and 6 speed DSG.
  • colin_lcolin_l Member Posts: 591
    I am sure you are going to a DSG (TDI I presume) from a 6 speed manual for a reason. Just make sure you are happy with the DSG on a real world, practical level BEFORE you make the leap.

    I've already lept, and yes of course I have many reasons.

    1. My wife can't drive manual. She has no interest in learning, and I have no interest in her burning up the stock clutch in my Evo. (Which is a 5 speed, not 6, and has 107k miles.)

    2. Our other car is a Suzuki Grand Vitara V6 4WD with 5 speed slushbox. It works fine, but the DSG is highly superior. Just one example of why-- cruising RPM @ 80 mph is 2500 vs 3400.

    I've noticed that many vehicles that still offer a manual but come standard with an automatic let you switch to the manual as a zero cost option. The automatics cost more, so this switch is pure profit to the manufacturer!
  • lemmerlemmer Member Posts: 2,689
    It is really more of a performance move. As much as I love a good manual transmission, a good DSG is pretty much superior in every way. Now if Miatas gave up manuals, I might be upset. An M5 is just a really fast luxury car. I don't really see the point of having three pedals in it.
  • dudleyrdudleyr Member Posts: 3,469
    How is a dsg superior to a manual? I can't think of a single way besides not shifting and to stick fans that is not an advantage.

    Equal - maybe in some extreme cases, but superior - not too sure.

    VW DSG for example is considerably slower and uses more fuel than their manual (per consumer reports tests).

    Not too concerned about M5 losing a stick. A 3 series losing the stick would concern me though.

    Very happy to see Honda offering a stick on several models of the upcoming accord.
  • lemmerlemmer Member Posts: 2,689
    Ferrari disagrees with you.
  • colin_lcolin_l Member Posts: 591
    edited June 2012
    You can't be serious.

    A DSG or similar technologies under other names is superior to a manual in the following ways:

    - There are two input and output shafts, and the one which is not in use is pre-selecting the next gear. If you're decelerating or coasting, it will preselect a lower gear (5 to 4 for example). If you're accelerating, it will select a higher gear.

    - When it comes time to shift, if the pre-selected gear is correct, you have milliseconds of shift time. No human can shift a single clutch manual so fast. This directly results in DSGs besting the acceleration times of manual transmissions, often by .2 to .3 seconds 0-60 and obviously larger gaps as you go through more gears (quarter mile, 0-100, etc).

    - Nearly all DSGs rev-match downshifts. Very, very few manual transmission drivers do this at all, and even fewer do it effectively.

    - A DSG never selects a truly improper gear. I haven't driven a 7 speed manual, but I've driven a 6 and it's all too possible to find the wrong gear especially when downshifting. I'm sure there are a few perfect humans out there who have never done this, and there are many more who will never admit to having done this. ;)

    Here's the only ways a manual is superior--

    1) cheaper
    2) lighter
    3) subjectively, some drivers like them better.

    On #3, get real. If you want to truly accomplish something under your own power, try a bicycle. :P
  • dudleyrdudleyr Member Posts: 3,469
    edited June 2012
    Ferrari is not a real world example.

    Ford and VW DSG are way behind the performance of a manual. :P
  • colin_lcolin_l Member Posts: 591
    we aren't going to get anywhere unless you can substantiate your claims.

    really, you just like them better. that is fine. it's not technically correct to say they are better, other than weight and cost.
  • ruking1ruking1 Member Posts: 19,826
    edited June 2012
    Yes, Ferrari IS a real world example.

    Indeed, Ferrari does not make its own "DSG" (SMT) transmission but the uses a vendor (Getrag) . Borg Warner did a lot of the initial work.

    Here is just one article about the DSG.

    Invented in 1935?

    Another DSG- dual clutch transmission

    Now since MOST cars in the US are equipped with so called SLUSH BOX A/T's (a tad less than 80% with app 20% being manual and an unknown percentage (not really measurable) as "other", i.e., CVT. The CVT not well accepted nor popular) The real issue which is probably HUGE, but goes largely unnoticed and unheralded is: it is WAY better than the normal and ubiquitous SLUSH BOX A/T. Noteworthy is better mpg, which is probably a driver, toward. dual clutch applications.

    So if you come at it from a European perspective where most (90%) cars are equipped with M/T's, then who really knows why a European would buy a dual clutch transmission, aka MINUS 3rd pedal? It would be an exception, not the rule.

    It is really hard to demonstrate an apples to apples comparison because there are no oem's that do all three transmissions. So for example, it is pretty easy to show the difference between A/T and M/T, ala 03 TDI @ 39.7 (real world)and @ 46.5 mpg, the M/T getting 17.1% better mpg. (EPA is different also)

    FF to same engine 2.0L TDI (VW Jetta 09 TDI) but DSG 6 speed/M-T 6 speed . So by INFERENCE when we compare a 6 speed M/T (41 mpg real world) against a 6 speed DSG (39.6 mpg real world) we see that both the EPA and probably more importantly the real world are very close. (www.fueleconomy.gov)

    Indeed VW (inference) has done WAY better using the DSG vs slush box AT (as shown by Real World numbers) going from 17.1% to 3.5% differences (less difference)

    It is also logical (lots of reasons) the MT is capable of greater RANGE of mpg than the DSG.
  • colin_lcolin_l Member Posts: 591
    So if you come at it from a European perspective where most (90%) cars are equipped with M/T's, then who really knows why a European would buy a dual clutch transmission, aka MINUS 3rd pedal? It would be an exception, not the rule.

    Curious-- have you visited Europe lately, or driven there? It's not 90% manual that I saw. There unquestionably are a lot more manuals than the US and Canada, but 90% cannot be correct.

    A lot of the little cars have CVTs. Some of the big cars have automatics.

    Driving in traffic is tons easier with any form of automatic, and the large cities have plenty of traffic.
  • ruking1ruking1 Member Posts: 19,826
    edited June 2012
    So come up with some real numbers/%'s, that would add to the discussion.

    Well I think the same could be said about the death of M/T in the US. The actual population is @ 20% even as if the perception is dead to dying. Obviously it is not. That percentage actually had to be gleaned. IF the NHTS agency knows the numbers they are certainly keeping it off line.
  • colin_lcolin_l Member Posts: 591
    In 2006 it was 'nearly 80%' new sales of manuals in Europe, according to this study.

    In the 6 years since then, surely it has decreased. 2013 Audi S4 and S5 are DSG-only in Europe for 2013.

    Plus as I said before, CVTs are increasingly popular on tiny cars because of the superior mpg. It's enough to overcome the cheapness of a manual, with high fuel costs.
  • cdnpinheadcdnpinhead Member Posts: 5,617
    edited June 2012
    Here's (sic) the only ways a manual is superior--

    1) cheaper
    2) lighter
    3) subjectively, some drivers like them better.


    Generally you make good points, but another factor has to do with maintainability and the cost/hassle of repair. The new alphabet-soup transmissions are complex beyond anything done previously and often can't be repaired at all by anyone but the OEM -- you remove and replace the whole damn thing, assuming there's a replacement available.

    And, at what cost and delay?

    That's my #4.

    Manual transmissions are stone simple and rarely break. The clutch may need replacement from time to time, and most mechanics can figure out how to do it.

    Some of the new stuff doesn't even have replacement hardware available in the field for the first weeks & months. If your magic transmission packs up, you're in a loaner.
    '08 Acura TSX, '17 Subaru Forester
  • ruking1ruking1 Member Posts: 19,826
    edited June 2012
    New MY car sales does not take into account the passenger vehicle population. The passenger vehicle population is app 270.5 M vehicles.

    Again, it is the same situation (only a micro) with CVT's. Again real percentages would add to the discussion. I could say that 100% of Z06's come with 6 speed manuals. I'd be 100% correct. SO WHAT !!?? ..., in the over all scheme of things, absolutely meaningless.
  • sweendogysweendogy Member Posts: 1,310
    I am appalled as to what is happening to the current car climate. People like to call themselves enthusiasts and walk into a dealership with the idea they want a performance car (say sub 50k) and opt for the auto is crazy to me. Sure autos have advanced to the point that a manual is an afterthought but to be truly in-tune with a car you should aways pick the manual if avail- unfortunitly for me - more "enthusiasts" are checking the box for the auto- and car makers are now deleting the manual- sad.
  • nippononlynippononly Member Posts: 12,555
    edited June 2012
    I have been coming to Edmunds for over ten years now and never have I seen the automatic in all its guises - CVT, DSG, blah blah - defended so vociferously on the "Future of the Manual..." board.

    I guess less and less people, enthusiasts included, do "get it" about the joy of having a manual transmission, and if a racetrack advantage (where most drivers will never drive their car) of 0.03 milliseconds is the way we will celebrate the rise of the DSG, then the manual is already lost. For now it seems support of the automatic is at less than 50% at TFOTMT, which will give me some pale comfort, but I can see it is changing quickly.... :-(

    But hey, the FRS and BRZ have launched, and at least they offered it initially with a proper 6-speed manual, eh? Will it last? The tC still offers a manual after (6?) years, which I will take as a good sign. ;-)

    2014 Mini Cooper (stick shift of course), 2016 Camry hybrid, 2009 Outback Sport 5-spd (keeping the stick alive)

  • qbrozenqbrozen Member Posts: 33,736
    Ford and VW DSG are way behind the performance of a manual.

    That's at least half incorrect. I've read the Ford DSG is pretty miserable, but the VW unit has proven quicker than its manual counterpart.

    '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
    edited June 2012
    I can definitely understand that sentiment. Steven, one of our hosts highlighted there are (now) 591 models on the year to year markets. Of those, it would be interesting to see how many have manual transmission options. I do not think there is a data or option capture/sorting system to where you can say there are say, 15 that offer M/T.

    On the other hand, let me call your attention to the VW line, particularly the Passat. The Passat is hardly an "exotic" offering, even as it does have "exotic options, TDI, DSG, in a so called family sedan. One of its target markets is the ubiquitous Toyota Camry/Honda Accord, etc., etc., field, to name two competitors. Anybody who has tried to buy either or both in a 6 speed M/T has probably had a tough go of it. Yet there is not a model of Passat that does not offer a 6 speed M/T.
  • stickguystickguy Member Posts: 53,330
    the performance (acceleration) advantage of the DSG keeps popping up. To me, that is not really important. As with other 0-60 comparisons, they are more magazine fodder as opposed to real-world useable.

    Putting aside the few people that track a car (and even auto-X to a large degree, since you don't drive flat out), how many people normally do clutch drops (or brake torque an AT), run it to redline in all the gears, slam off speed shifts, etc. around town or in normal driving?

    I tended to take it relatively easy on my trans and clutch, and when driving an AT I also am not looking for it to be banging off 6K shifts all the time. So the "real world" advantage is going to be pretty negligible.

    So, to me, the real argument is about feel, control, extreme conditions. But mostly the experience (just liking to shift) 99% of the time.

    and after 30+ years driving a stick, I will say you can be just as distracted (and multi-tasking) with a manual if you want to. Just takes a little more dexterity!

    Oh, and I also know plenty of people that drive a stick, and I don't think it made them any better of a driver (adding the component of having to remember to shift gears on occasion). They did not suddenly know how to drive situationally, or become more aware. Or learn real car control. being in the wrong gear all the time is not really an art form.

    2020 Acura RDX tech SH-AWD, 2023 Maverick hybrid Lariat luxury package.

  • ruking1ruking1 Member Posts: 19,826
    edited June 2012
    I really can not say I disagree with you on any of the points. As you allude/imply, it really is all about DEGREES.

    I know that guy's like you have probably read about the DSG, but for the general discussion, DSG (in my mind) has pros and cons. It is a dual clutch system so they can and do wear out. The hope is of course after several hundred thousand miles. It is COSTLY to both service / repair/ rehab them. When you compare it to a R/R clutch, it sports a factorial extra cost. You can do the rocket/ricer racer gig: shift like you have A.D.D :P You do not have a 3rd pedal, and what that means to a slush box A/T driver. It gets way better fuel mileage than an A/T. Now the important part is the computer and DSG conspire if you will (got to keep the host intrigued) to value add over the slush box, in the mpg dept. It also has matching EPA C/H to a M/T.

    Range of a M/T, anecdotally is much greater. Indeed on a Passat TDI, the "Taylors" did 84 mpg plus (on a EPA H of 43 mpg) @ 5 under the speed limit and for a whole tank full, posting 1600 + miles. (6 speed M/T) I do not think the DSG could even come close. If it could I am sure they would have done it.
  • colin_lcolin_l Member Posts: 591
    It's because the argument used to easily be that a manual always performed better. Now, increasingly, they do not.

    All that is really left is the ability to rev the engine and the joy of rowing your own gears.

    Here's my oh-so-horrible DSG equipped car. Just terrible! :P
    image
  • bpizzutibpizzuti Member Posts: 2,743
    edited June 2012
    No there's also the unarguable argument that people who don't like manuals just don't "get it" whatever indescribably "it" it may be.

    I suppose those same people still write letters on paper and put them in envelopes too. :shades:
  • kyfdxkyfdx Moderator Posts: 265,441
    I'm going to run right out and mail you a pithy response! ;)

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  • bpizzutibpizzuti Member Posts: 2,743
    Sorry, but you ballpoint users just can't possibly understand the visceral level of control and ease of repair of an inkwell and sharpened quill. :D
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    Yes, but I can just sharpen myself a new quill but you'll have to throw away your ball point.

    A DSG would not be a cheap transmission to repair. No problem on a used Ferrari, but on a used Ford you might as well just junk the car if that tranny goes south on you.
  • bpizzutibpizzuti Member Posts: 2,743
    Might depend on how many Fords get junked with intact trannies, right?
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    True--in theory a wet clutch transmission should last longer than a manual transmission but there is the problem of electronics.

    I'd imagine that even a good low miles DSG is going to cost you as much as a used engine.
  • bpizzutibpizzuti Member Posts: 2,743
    As more of them get out there I figure the price will come down. Maybe. Helps that they're using a similar unit in the Fiesta. Veloster owners are going to be stuck, since Hyundai doesn't use their DCT anywhere else (they need to either get it into the Elantra and Accent or dump it for their 6-speed auto).
  • stickguystickguy Member Posts: 53,330
    don't expect them to ever get cheap. Even regular ATs are still super expensive. Ask any Odyssey owner when their trans crapped out early and the dealer wanted 5K to replace it with a rebuild.

    2020 Acura RDX tech SH-AWD, 2023 Maverick hybrid Lariat luxury package.

  • bpizzutibpizzuti Member Posts: 2,743
    Expecting a Honda part to be cheap is a ridiculous logical fallacy. :shades:

    Greater supply always lowers prices unless that supply doesn't outdistance demand.
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