Home / Auto News / News article: Should You Buy a Car With a Dual-Clutch Transmission?
 |  Apr 20, 9:31 AM

 

In the quest to find a new car, there are a lot of questions that need to be asked. Questions about cargo room, technology, options, luxuries and other various elements will come up more than a few times while shopping for a new car. However, from the car driver’s perspective, there are just three main questions: 

How comfortable is the driving experience? 
How fun is it to drive? 
How good is the car on fuel?

A major factor in answering those three questions has to do with the right transmission. Let’s face it, manual transmissions aren’t for everyone. They require familiarity and a level of perfection to get just right. With a traditional automatic transmission, drivers have been able to experience a fairly comfortable, yet less engaging experience. Still, an automatic transmission can leave any driving enthusiast unsatisfied. Luckily, progress has been made in the world of automatic transmissions that can help alleviate those woes.

The latest trend in transmissions is the Dual Clutch Transmission, or DCT. Dual Clutch Transmissions have been around for quite a while, especially in high-powered performance cars, but the technology has been steadily making its way into more everyday driver consumer cars.

 DCTs are a lot like manual transmissions, except they have two clutches, and no pedal to control them. What this means is that there’s less interruption of power when shifting gears. It works like this: as you’re driving along, the car has already selected the next gear, so when it’s needed, it just does a quick change. No need for disengaging and engaging the clutch. The whole gear change takes just milliseconds to complete, much quicker than a manual transmission.

To compare, the average person’s time to shift a manual transmission ranges between half a second to a full second. Regular automatic gearboxes have traditionally taken much longer and even though some modern units, like those from Mercedes-Benz, can shift in as little as 100 milliseconds, there’s often still a delay between driver input and the gear shift. While shift times vary depending on the gear chosen, Volkswagen’s DSG unit can upshift in just 8 milliseconds.

Many DCTs can operate in two modes, a fully automatic mode, so the car’s computer chooses when to changes gears for you, or a manual mode, which lets you select gears via buttons, steering wheel paddles, or by moving the gear stick. The DCT in the end is an ideal candidate for a driver who wants to have an engaging manual like driving experience when they want it, and a comfortable automatic transmission for more mundane driving.

The first passenger car to have a DCT was the 2003 Volkswagen Golf R32 (top). Other car companies have jumped on board with the DCT technology, offering it as an option on many cars. The technology seems to suggest that DCTs are a great idea for high-performance cars, where precision gear-changes are necessary, but how do DCTs act on your regular passenger car?

Ford’s version of the DCT, called Powershift, has been available on the Fiesta, and Focus for a little while now, and has encountered a few snags. Drivers found that the shifting is not as smooth as they expected. Additionally, there was some slowness in the selection of the next gear, especially when trying to accelerate at lower speeds. These issues aren’t just present on Ford’s DCT. Some drivers call VW’s dual clutch solution jerky too, especially in slow speeds.

Those minor quibbles about DCTs, however, are nothing compared to the issues that have plagued single clutch sequential gearboxes. DCTs are significantly smoother than single clutch units, prompting a switch by companies like Ferrari and BMW.

Richard Truett from Ford explained what the future holds for their DCT. “We are continually working to refine and improve the dual clutch transmission, so that when it changes gears the sensation won’t be any different from a traditional hydraulic step-gear transmission,” he said, acknowledging past criticisms.

Volkswagen is upbeat though. Mark Gillies, manager of product and technology communications for VW says, “The future looks good for DSG, because it combines the ease and convenience of an automatic transmission with the fun-to-drive element of a manual and because it doesn’t have an energy-sapping torque converter, it usually gets better gas mileage than a conventional automatic.”

He also adds, “We are very happy with the technology and feel it gives us a unique selling proposition, particularly on our TDI and sporty vehicles.” To date, Volkswagen has sold 3.5 million cars with their dual clutch transmissions.

Are DCT’s an ideal option for every car? Truett tells us there are a few places where a DCT just won’t work. “Dual clutch automatics don’t make sense for some vehicles, such as our Super Duty pickups.” Truett added, “A dual clutch transmission works best in a vehicle where fuel economy is the top priority. So, you are likely to see dual clutch automatics in our global small cars.” 

So if you’re looking for a sportier feel in your daily drive, but want the ease of an automatic, a DCT is a great choice. It’s far more responsive than a traditional automatic or a Continuously Variable Transmission, and brings comparable fuel efficiency. DCT’s can be a good blend of performance and fuel economy, but that ratio depends on the manufacturer and the car. Some are much better on gas than manual or traditional automatic, while others can be more performance oriented.

Either way, try it out yourself when deciding if it’s truly better for you.

  • http://pulse.yahoo.com/_FOTS6SNA7IOJOFQTSN4S52K7AM Chad W

    Manuals are not difficult to learn and do not require the levels of precision this article intimates.  I have been driving a ‘stick’ since I was 12, where I learned on a 1978 Ford Bronco with a V8.  It was easy.  the driver simply has to care to learn.

  • martinn

    not difficult but clumsy,outdated and less safe than auto.it distracts driver’s attention while shifting. and even most experienced drivers could stall a manual car occasionally.a highly risky nuisance.my previous cars were manual past twenty years.for the last 4 years I’ve been driving auto.what a comfort.

  • http://pulse.yahoo.com/_FOTS6SNA7IOJOFQTSN4S52K7AM Chad W

    If more people drove manuals, there would be less people texting and making calls.

  • http://profile.yahoo.com/VYFS7GTIKRIHN2DQYFFOTZQF2M Jo Mc

    I like a dual clutch.Yes its different than a torque converter auto. But with that said. Its really up to the individual. Hate to say this but the fluid converter trannies will be long gone in the not too far distant future. All in the pursuit of MPGs. Ford has issues . But they have worked out most bugs.Its ok i guess .Its what I drive. It was odd at first drive. But after a while it got better and gets better every mile. Time will tell.

  • http://profile.yahoo.com/VYFS7GTIKRIHN2DQYFFOTZQF2M Jo Mc

    I cant figure how anyone could text and drive. Are they octopuses? I cant see how it can be done. Or why?. Rather run up on a drunk. got a better chance of getting away unscathed.

  • http://profile.yahoo.com/VYFS7GTIKRIHN2DQYFFOTZQF2M Jo Mc

    But when you get old like me. that auto looks better.

  • Gffhh

    If you can’t drive a manual safely, you dont deserve to be driving one. Stick with your noob tranny.

  • Hot Rod

    I learned driving on a manual stick and have had a number of cars that were stick shift. That said; modern automatics are far superior to manuals: no driver fatigue (esp in heavy traffic), no missed shifts, faster, smoother shifting with no torque loss (thanks to planetary gears), and better efficiency. With a clutch in the torque converter, the torque converter is only used when the car is stopped. A driver would have to operate a manual gear box very carefully to match the economy of a modern, computer operated automatic. Drag racers have been using automatic transmissions for many years. The first version was known as the Clutch-Flight; this was a Chrysler Torque-Flight with a slider clutch fitted in place of the torque converter and valving modified to produce near instant shifts. This gave shifts with no loss of torque transmission and eliminated driver shift errors. The automatic could shift faster than a human driver and perform with consistency.

  • http://profile.yahoo.com/ZTVUMT4AOVH5LTICAZ6DCULUJI J

    gffhh …Ive drove longer than youve probably been alive. just sayin, its 2012

  • Carlababcock

    I rented a Ford Focus with the Powershift and the MPG’s were awesome  (better than my Cruze).
    Do we know yet if durability is a concern?

  • Pr51sux

    hot rod I like the 904 or 727 torque flight………You showing your age though.
    Ah they were the best trannies ever devised!

  • Pr51sux

    Yes they had issues . But ford is working on it. There is a tsb 12b37. Its not perfected yet. But it improved it quite a bit. If these drivelines last as long as fluid type? . Well I dont know. But doubt it. Its too soon to tell.

  • Leckyman

    I drive a Renault with their EDC dual clutch transmission and I can’t fault it. It’s smooth and responsive. Blip the accelerator and it kicks down to give you a nice bit of acceleration. I believe the Renauly EDC and Ford’s Powershift are both designed by Getrag  in Germany.

  • http://www.facebook.com/makinthemagic Kevin Jacobson

    With a little bit of practice, you don’t have to think to drive a manual.  It’s like anything else, your muscles build memory and your ears and butt will listen/feel for shift points. You will be doing the same with an auto trans after a few thousand miles.

  • http://www.facebook.com/cmhdad2001 David Brodsky

    I have a 2012 Ford Focus Titanium. The dual clutch transmission on it SUCKS!! The car used to buckle every now and then when shifting gears. Its been better however when i accelerate from a stand still going uphill the car lags in power. When I step on the gas pedal I expect the car to give me the power immediately and this car don’t always do that. I’m considering trading it is for a 2013 Hyundai Elantra Coupe SE

  • Manbo

    The Elantra will give you more punch when you put your foot down, but the engine is made out of cardboard. I started having engine issues after 15k kms, but that was on a 2011, so hopefully they have made the engine a bit more robust…