I'm done with DCT.
Our Roomster DSG (DQ200, dry clutch 7 speed) is at 48,000 miles so we've been lucky, maybe. But I've been conscious the whole 10 years we've had it that the design is, to my mind, fundamentally flawed when viewed as an automatic. It's also very awkward for close maneuvering.
The reason I think it's a bodge is implied by the driving instructions in the manual. Do not hold the car on the accelerator.
Anybody familiar with old style autos soon works out that on a gentle slope they don't roll backwards in D. On a steeper slope, a little accelerator might be used.
Many of these people will go on the buy a DSG or similar DCT-equipped car, and instinctivley drive it the same way. The mechanically aware will realise that they are actually holding the car on the clutch.
At best, this will result in the clutch pack wearing out early. At worst, it will overheat the pack. Overheating is what destroys these boxes which is why they have overheat protection. They just shut down at a certain temperature. But inevitably there will be incremental extra wear from using the 'hold' technique.
We have always avoided the 'hold', but I wouldn't count on the previous owner(s) of a used car having done so.
DCT's are a bodge, invented by Porsche for racing, but now widely used to game the emissions/economy figures.
The 7 speed wet clutch DQ500 in my daughters A6 3.0 diesel is very very good in terms of drivability - much better than the dry clutch version at mimicking a torque converter. Sadly it is now slipping at 78,000 miles and if she is lucky it will just need a clutch pack (a £2,700 job at a specialist).
I certainly wouldn't buy a used one.
I've been trying to persuade herself to swap the Roomie for a Mazda 2 auto, which can be had currently pre-registered at good prices (they are being dropped in favour of the Hybrid which I have been told is a rebadged Yaris). She won't have it, because she loves the load capacity of the Roomie.
Last edited by: Manatee on Wed 19 Feb 25 at 17:00
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