Mk 8.5 speed limit warning useless and dangerous

[Adam1986uk]

I'm finding the speed limit warning super annoying on the mk8.5. It can be temporarily deactivated but turns on again next time you start the car.

About 30% of the time it detects the wrong speed limit and so alerts you incorrectly - the technology simply isn't good enough.

The adaptive cruise control also uses the sign detection to set the speed. On a journey this weekend, it twice decided the speed limit was 100mph. It then automatically set the cruise control to 100mph on the M25, see image attached (photo taken by passenger the second time it happened, luckily I managed to brake before exceeding the speed limit).

You can see the speed limit it detected on the right in the red circle and the ACC auto set to the same in green on the left side. Crazy!

[Carlosfandango]

You can turn off the cruise control automatically adjusting to speed limits in the settings, you can also turn off the ACC being able to adjust speed due to road layout, I’ve had these both turned off since I first used the ACC and experienced the same as you, once off the cruise control is adjusted manually using the steering wheel buttons like normal.

[fredgroves]

Blimey it's still doing that on the Mk8.5?

Other than the limitations of it seeing speed signs for parallel roads, mine has been OK a few dozen software updates ago.

Initially it used to get weird things like deciding the speed limit was 85kmh (50mph) but set it to 85mph! But that was a couple of years ago.

[ar899]

Had a 24 plate T-Roc on hire recently and it was doing it. 70-30 at one time when a residential road ran parallel to the A road I was on. I got into the mindset of trying to predict when it would happen......

[ajmoir36]

Interesting to see VW have learnt nothing from the mk8.