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 Post subject: DCT Transmission
PostPosted: Wed Jan 20, 2021 8:49 pm 
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Soft Roader
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Joined: Sun Nov 29, 2015 6:51 pm
Posts: 39
Hi all,
I am considering an X-Trail, N-Connecta DCT which has an automatic double clutch gearbox.
Has anyone have experience of this type of gearbox and able to offer feedback before I decide?
My current vehicle is a 2018 Tekna manual so the auto option is all new to me.
Cheers
Doug


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 Post subject: Re: DCT Transmission
PostPosted: Wed Jan 20, 2021 9:47 pm 
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Xtrail Nut
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Joined: Mon Apr 02, 2012 2:09 pm
Posts: 2766
Location: Estonia
Car:: Xtrail
Model: T31 2.0dci auto, LE
Year/Plate: 2012
Colour: Grey
Mods: Towbar, ptc heater fix, probright drl system, Ebersp├Ącher aux FBH with GSM remote.
Maybe not good, if lot of towing. Ask the sales guy.

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 Post subject: Re: DCT Transmission
PostPosted: Thu Jan 21, 2021 4:12 pm 
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Extreme Off Roader

Joined: Thu Jul 19, 2018 7:54 pm
Posts: 310
Location: East Hertfordshire
Car:: Xtrail
Model: Aventura Explorer diesel auto.
Year/Plate: 2008
Colour: Blue
I have read several reports on that type of gearbox, not necessarily Nissan though, and I've decided that I'll never have one despite the fact that I'm a big fan of automatics. I have a 2008 T31 diesel with a conventional auto gearbox and I love it. And I tow a caravan. Just my personal opinion though.


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 Post subject: Re: DCT Transmission
PostPosted: Fri Jan 22, 2021 7:54 pm 
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Soft Roader
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Joined: Sun Nov 29, 2015 6:51 pm
Posts: 39
I'm not towing and reading up on the technology, the headlines are indicating more efficiency and reliability. Two clutch friction plates are used rather than just the one so the workload and wear is split across the two. One plate is used for even gears and one for odd.
My new vehicle lease may now be on hold as the dealership has stated there is a new model being introduced later this year.


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 Post subject: Re: DCT Transmission
PostPosted: Sat Jan 23, 2021 10:57 am 
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Xtrail Nut
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Joined: Mon Apr 02, 2012 2:09 pm
Posts: 2766
Location: Estonia
Car:: Xtrail
Model: T31 2.0dci auto, LE
Year/Plate: 2012
Colour: Grey
Mods: Towbar, ptc heater fix, probright drl system, Ebersp├Ącher aux FBH with GSM remote.
I ithink, Ford has the weakest DCT's

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 Post subject: Re: DCT Transmission
PostPosted: Thu Jan 28, 2021 12:59 am 
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Extreme Off Roader
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Joined: Sat Apr 03, 2010 10:35 pm
Posts: 221
Location: Sydney, Australia
Car:: Xtrail
Model: T30 Ti Series 1
Year/Plate: 2003
Colour: Silver
Mods: Too many to list here :o) See my ride from my signature link
DCTs have 2 main drawbacks.
Firstly, they do not like stop/start slow crawling traffic conditions as this causes clutch slippage and excessive wear.
Secondly, for the same slippage reason they do not like reversing loads such as caravans up steep inclines.

The fact that one clutch services odd gears means that you will still have the most wear on the single clutch which engages 1st gear in stop/start traffic but replacement clutches are far more expensive than normal clutches.

DCTs are really meant more for performance cars which require fast gear changes. If you want an automatic transmission, best to still stick with the conventional types of torque converter automatics or the CVTs

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