Editing Direct-shift gearbox (section)

=== Disadvantages ===
*The clutch pack mechanisms have a limited lifespan, due to excessive slippage in low-speed conditions such as stop-and-go traffic; 
*Marginally worse mechanical efficiency compared to a conventional manual transmission, especially on wet-clutch variants due to electronics and hydraulic systems;<ref name="DCTfactsHow" />
*Expensive specialist transmission fluids/lubricants with dedicated additives are required, which need regular changes;<ref name=DCTfactsLubes/><ref name=dctSpecialLubes>{{cite web|title=Special Transmissions Need Special Lubricants |url=http://www.dctfacts.com/information/special-lubricants.aspx |work=DCTFacts.com |access-date=15 May 2011 |url-status=dead |archive-url=https://web.archive.org/web/20110325153848/http://www.dctfacts.com/information/special-lubricants.aspx |archive-date=25 March 2011 }}</ref>
*Relatively expensive to manufacture,{{Citation needed|date=April 2008}} and therefore increases new vehicle purchase price;
*Relatively lengthy shift time when shifting to a gear ratio which the transmission control unit did not anticipate (around 1100&nbsp;ms, depending on the situation);<ref>{{cite web|url=http://www.autoevolution.com/news/how-dual-clutch-transmissions-work-5458.html|title=How Dual-Clutch Transmissions Work|publisher=SoftNews NET|work=AutoEvolution.com|date=31 March 2009|access-date=30 October 2009}}</ref>
*Torque handling capability constraints impose a limit on after-market engine tuning modifications (though many tuners and users may exceed the official torque limits notwithstanding); (Later variants have been fitted to more powerful cars, such as the 300&nbsp;bhp/350&nbsp;Nm VW&nbsp;R36 and the 272&nbsp;bhp/350&nbsp;Nm Audi&nbsp;TTS.)
*Heavier than a comparable [[Getrag]] conventional manual transmission ({{convert|75|kg|lb|abbr=on}} vs. {{convert|47.5|kg|lb|abbr=on}});