I mostly drive in S mode, sometimes when I'am leaving roundabout, it falls to 2 speed, which is much more jumpy, jerky and agressive.

 

On the 19s Vs 18s wheel / tyres questions.. I've got a 280 that came with 19s that I think look great and drive really nicely most of the time. Certainly A roads and motorways. I live in Devon though so really I could do with more squish for the lanes.

I found this suggestion so I plan to change to 245/40/19 tyres.. slightly wider than standard means 40 ratio has a bit more squish plus a thicker sidewall. Idea for me.

Also slightly higher geared so gives you a more accurate speedo too.. i.e. you don't have the 5% optimistic Speedo reading any more.

https://www.briskoda.net/forums/topic/529483-changing-the-profile-of-my-19-tyres-to-get-better-ride-on-c-roads/

After a number of years pretty much trouble free with my 280, I have an intermittent issue which started a couple of weeks ago.

When turning on the ignition I get notifications that ACC is unavailable, Park Pilot is unavailable, the traction control warning light comes on and TPMS is unavailable. If I drive a few miles down the road, switch off and back on again the lights usually reset and it's all ok.

I replaced the battery about 3 months ago so I can't think that will be the problem.

I've run a diagnostic check with OBD11 which throws up some codes related to Comms and the Haldex system, but because it is intermittent I just wondered whether anyone else has had a similar issue?

3 minutes ago, Just said:

After a number of years pretty much trouble free with my 280, I have an intermittent issue which started a couple of weeks ago.

When turning on the ignition I get notifications that ACC is unavailable, Park Pilot is unavailable, the traction control warning light comes on and TPMS is unavailable. If I drive a few miles down the road, switch off and back on again the lights usually reset and it's all ok.

I replaced the battery about 3 months ago so I can't think that will be the problem.

I've run a diagnostic check with OBD11 which throws up some codes related to Comms and the Haldex system, but because it is intermittent I just wondered whether anyone else has had a similar issue?

Do you have any ABS/ ESP errors ? If I remember correctly, if you got one cruise, acc won't work.

I didn't see any specific errors with ABS but I'm sure it also disables ESP.

It's weird that it can reset itself when restarting, surely if an ABS sensor is broken or a wire is loose it wouldn't be able to clear itself?

Was it coded when the new battery fitted?

5 minutes ago, Just said:

I didn't see any specific errors with ABS but I'm sure it also disables ESP.

It's weird that it can reset itself when restarting, surely if an ABS sensor is broken or a wire is loose it wouldn't be able to clear itself?

What error you got for the haldex ?

When I had a Passat with haldex, and the system decided to die(I had to replace the diff and it's module), that would disable my traction control

1 hour ago, Ootohere said:

Was it coded when the new battery fitted?

Yes, coded it to the new Yuasa with OBD11 - I went with an EFB battery as that type had been fitted from new.

3 hours ago, LeGrumpy said:

What error you got for the haldex ?

When I had a Passat with haldex, and the system decided to die(I had to replace the diff and it's module), that would disable my traction control

Fault codes I'm getting are:

Gateway U011400 Lost communication with four wheel drive clutch control module - Static

Brakes U112100 Databus missing - Static

Engine U112300 Databus error value received - Static

ACC U112300 Databus error value received - Static

ACC U112200 Databus implausible message - Static

The only other error is:

Central Electrics B126301 - Trunk lid unlock activation - Intermittent

On 15/03/2025 at 07:16, Just said:

When turning on the ignition I get notifications that ACC is unavailable, Park Pilot is unavailable, the traction control warning light comes on and TPMS is unavailable.

It’ll be a faulty wheel speed sensor. Symptoms identical to mine about three years ago.

Personal best today started out with a full tank and 300 mile range and ended up with 425 mile range after driving 183 miles !

41.6mpg

I love it when the 99 Ron Fairy tops the tank up as I drive along ! 😂

Edited 21 March, 20251 yr by Nick_H

1 hour ago, Nick_H said:

Personal best today started out with a full tank and 300 mile range and ended up with 425 mile range after driving 183 miles !

41.6mpg

I love it when the 99 Ron Fairy tops the tank up as I drive along ! 😂

Impressive. Don't think I've managed much better than 38mpg on a run.

Yeah I was pretty pleased with that !

Good work. I get up to 40 when driving sensibly. My enthusiasm usually drops it to low 30’s but I can live with that.

Yeah that’s veh good. Currently getting 23 to/from work, from cold in all of 1.5 miles! 😂 Best I’ve had is 40.1. on a 200 mile run from Surbiton to Stena Birkenhead. Around 70/75 most of the time with the odd blast to see off BMW/Audi/Corsaboi tail hangers.

On my run to the coast a couple of weeks ago (80miles each way with a 50:50 single lane A road/motorway split) I got a reported 40mpg on the run out. On the way home I switched into eco mode, used coasting and drove like a granny as much as possible.

40mpg again.

What a waste of time 🫤

I’ve found that too - driving in sport mode and still got healthy economy; guess it’s about the way you drive rather than the mode of the car.

Yes indeed!

To drive too much in "granny mode" I think you are mostly lugging the engine and stressing drivetrain and brakes ....

I cannot imagine how much of a fuel consumption difference it can make the fact that on eco ancillaries like the AC are working at minimal power, bit I suspect is negigible....

I am now driving mostly in Sport with the occasional manual "nudge" when the DSG is slow to upshift, and I have not noticed any meaningful variation in MPG.

Which I assume as the engine like more the 1.5 to 2k RPM range than the 1.1k/1.5k RPM range usually promoted by the "eco" driving, and the engine braking on downshift versus the "coasting" and just wasting brake components ....

6 hours ago, unclerichy said:

On my run to the coast a couple of weeks ago (80miles each way with a 50:50 single lane A road/motorway split) I got a reported 40mpg on the run out. On the way home I switched into eco mode, used coasting and drove like a granny as much as possible.

40mpg again.

What a waste of time 🫤

Yep. I could never get on with the ECO mode / coasting mode either which, without any engine braking, promotes more & unnecessary use of the brakes. Either that or you have to come off the throttle miles before a roundabout or lights which frustrates the hell out of anyone behind you.

I stay in D mode most of the time with the odd spurt in Sport mode & manual downshifts via the paddles when needed.

On 19/03/2025 at 19:57, numskull said:

It’ll be a faulty wheel speed sensor. Symptoms identical to mine about three years ago.

Thanks Numskull, how do I tell which sensor it is, will I see visually, or better to just replace all 4?

Your specialist will scan the car and that will identify which one has failed.

16 hours ago, numskull said:

Your specialist will scan the car and that will identify which one has failed.

I'll have a guess - rear offside.

6 hours ago, Berisford said:

I'll have a guess - rear offside.

Oddly, yes that was the one that failed on ours….

Had my 2020 Superb 272 hatch for 5 months now, now I'm (sort of) over the initial constant desire to take it for random blasts (average of 27mpg over 3.5k miles) I have been pretty impressed with the mpg on my twice weekly commute on the m3/m25, I'm constantly managing over 50mpg whilst on the motorway, which has blown my mind, although by the time I've got through the current traffic coming onto the A3 and booted it a couple of times it'll be down into the low 40's

Edited 28 March, 20251 yr by travo

2 hours ago, travo said:

Had my 2020 Superb 272 hatch for 5 months now, now I'm (sort of) over the initial constant desire to take it for random blasts (average of 27mpg over 3.5k miles) I have been pretty impressed with the mpg on my twice weekly commute on the m3/m25, I'm constantly managing over 50mpg whilst on the motorway, which has blown my mind, although by the time I've got through the current traffic coming onto the A3 and booted it a couple of times it'll be down into the low 40's

Very impressive - I drive my 280 like a saint and can only get 40mpg.........