Is it OK to coast in neutral(2017 S6)?

[AgisS4]

I usually put my S6 in neutral going downhill on a mountain pass to maintain speed around 60 mph. If I keep the Stronic engaged it will slow down more than what I wish.
Is this going to cause me an engine/transmission problem?

[MarcoA]

No you will be fine

[GasMan]

Might cause premature wear of your kanooter valve.

[thomthor]

Putting unnecessary wear on the kanooter valve aside, I’m wondering if when you put it back in D and your still at speed, does it go to the gear appropriate for that speed or does it go into 1st first.

[gk1]

Might not cause any damage, but in most states it is illegal....including CA.
Although I doubt there is any way to prove it...god forbid you get in an accident and they find out your were in neutral it might add insult to injury.

https://www.trafficaccidentnewsandadviceblog.com/coasting-downhill-motor-vehicle-traffic-code-090910/
http://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=VEH&sectionNum=21710.

[AgisS4]

Putting unnecessary wear on the kanooter valve aside, I’m wondering if when you put it back in D and your still at speed, does it go to the gear appropriate for that speed or does it go into 1st first.At 55 mph goes to a gear corresponding to ~ 2000 rpm

[WatchMeSpend]

At 55 mph goes to a gear corresponding to ~ 2000 rpm

What mode are you driving in?

[bendsley]

Some info from Engineering Explained on YouTube about coasting in neutral.
https://www.youtube.com/watch?v=6zzEtxJkC7Y&t

[PeytonBrandt]

Some info from Engineering Explained on YouTube about coasting in neutral.
https://www.youtube.com/watch?v=6zzEtxJkC7Y&t

I’m pretty sure Jason is using a normal torque converter transmission in that video. I’m guessing OP is asking specifically because S-tronic is dual clutch


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[Audisthesia]

I’m pretty sure Jason is using a normal torque converter transmission in that video. I’m guessing OP is asking specifically because S-tronic is dual clutch


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He is. That's why he's saying don't coast in neutral (one of his reasons anyhow) because that's how torque convertor trannies get cooling.

As you already know, the S6 s-tronic isn't a torque convertor tranny, more accurately it's and auto manual dual clutch transmission. So do not assume the same rules apply.

[wwhan]

I usually put my S6 in neutral going downhill on a mountain pass to maintain speed around 60 mph. If I keep the Stronic engaged it will slow down more than what I wish.
Is this going to cause me an engine/transmission problem?

I would not do it.

From Audi SSP 990193 for 0B5 S Tronic Transmission"

"… towing
If a vehicle with S tronic needs towing, the conventional restrictions of automatic transmissions apply:
– Selector lever in position “N”
– A maximum towing speed of 30 mph (50 km/h) must not be exceeded
– A maximum towing distance of 30 mi (50 km) must not be exceeded

Explanation:
When the engine is at standstill, the oil pump is not driven and certain parts of the transmission are no longer lubricated. Exceeding a speed of 30 mph (50 km/h) results in unacceptably high rotational speeds within the gearbox and dual clutch, because one gear is always engaged in both sub-gearboxes. If these towing cautions are not observed, serious transmission damage can occur."

[gk1]

I would not do it.

From Audi SSP 990193 for 0B5 S Tronic Transmission"

"… towing
If a vehicle with S tronic needs towing, the conventional restrictions of automatic transmissions apply:
– Selector lever in position “N”
– A maximum towing speed of 30 mph (50 km/h) must not be exceeded
– A maximum towing distance of 30 mi (50 km) must not be exceeded

Explanation:
When the engine is at standstill, the oil pump is not driven and certain parts of the transmission are no longer lubricated. Exceeding a speed of 30 mph (50 km/h) results in unacceptably high rotational speeds within the gearbox and dual clutch, because one gear is always engaged in both sub-gearboxes. If these towing cautions are not observed, serious transmission damage can occur."


I still wouldn't do it either, but in the OP's case the engine would be running, and should therefore be running the transmission fluid pump unlike a towing situation.

[AgisS4]

I will put the 7th gear in Tiptronic mode from now on most coasting scenarios. It should help with the mpg.

[Lilrckt]

If you've added efficiency mode via vcds, it seems to use neutral automatically while coasting downhill

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