40 TDI gearbox lag - officially a uk software update?

kennyboy993

Registered User
Hi there, back in an Audi after a while. I'm 2 or 3 days in to a C8 40 TDI Avant and although it's nice, of course I've already come across the awful lag from a standing start with the s-tronic gearbox.

I'm already starting to work around it with turning off coasting, switching to sport for roundabouts etc - though I wanted to check if there is officially a software update for this car in the UK that addresses it?

I've noticed something for the 50tdi though not specifically the 40.
 

abmat

Well-Known Member
VCDS Map User
Strange as I don’t experience any lag in mine at all.
 

kennyboy993

Registered User
I should state my car is a 2019 model. Maybe abmat's car being a 2021 already has update? The problem is all over the net - too severe an issue to be missed.

Out of interest, do you always travel in dynamic and sport abmat?
 

RichA6

New Member
Do you mean lag in the stop/start function or just in general? Mine is 2019 and fine, although the stop/start gets confused every now and then.
 

kennyboy993

Registered User
I mean in general, when you're pulling away from a standard start - there's a good 1.5 to 2 second lag from pressing the accelerator to the car actually moving off. It's clearly the transmission not the engine - is when the engine is already started i.e. stop/start turned off
 

RichA6

New Member
Ok. I’ve not had any issue like that and I’ve had the car from new. Gearbox has always been fine, generally the same as other dct type boxes, a bit slow swapping from first to reverse and back but fine otherwise. I always leave it in comfort mode.

Mines been back to the dealership loads of times for the dash and a recall and has had quite a few software updates. Probably worth asking audi.
 

kennyboy993

Registered User
Thanks Rich - I suspect mine may need same updates, do you know if there's a way I can tell from the car what updates it's had, or is a dealer call job?
 

PaulR7

New Member
I find mine sluggish as well from a standing start, pushing the lever down to get the transmission into S mode mostly fixes it but is then too eager to hang onto first and second gear.
 

kennyboy993

Registered User
I find mine sluggish as well from a standing start, pushing the lever down to get the transmission into S mode mostly fixes it but is then too eager to hang onto first and second gear.
Yeah I find that too - I find that putting it in manual mode helps even more. As I move off I then swap back to drive mode. It's all a bit of a faff though - I've emailed dealer to try and get a definitive answer to the software update question
 

Steve940

Registered User
I get no lag from pull away,I do get lag when coasting around a roundabout and then accelerating..as an example,it would be nice to have Instant response but hey,I'll assume its a characteristic of thus model..maybe a gearbox flash would fix
 

elan2s

Registered User
When the C8 was launched there were lots of reports on forums such as this one regarding a lag when accelerating. I had this issue on my 2019 car (40TDi) , but it was only really apparent when going to accelerate hard from standstill, perhaps to take advantage of a gap in traffic to turn right. I think some had a software update, but not sure it fully resolved the issue at the time. Popping it into S tended to solve the problem and putting straight back in to D once moving avoided the holding onto gears issues others mentioned. People buying later cars MY20 onwards do not seem to have the issue and on my 21 40TFSi I am not experiencing the issue at all. May of course be the switch from diesel to petrol making it more responsive. Always worth checking with the dealer if there is an update available for the gearbox though
 

Gazwould

Registered User
Surely this is accelerator pedal lag ?
And lies within the pedal developer coding.

I've noticed two different responses on 2.0 TDI Q5 and Q7 with S-tronic .

I'm sure this would fix it !

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