I've noticed, on several occasions, mainly on motorways, that my 2025 Superb L & K hybrid detects a lower speed limit and will continue for miles showing a lower speed than necessary. Where is the Superb getting its speed limit information fromm

I presumed it was getting it from GPS data like Waze does however on the A75, there are outdated 40mph signs for lorries see image and the car changed its limit to 40mph which is obviously incorrect. Therefore I'm thinking there is a front facing camera which reads the speed limit signs similar to it reading other signs which then flag up on the dash, ie narrow road, roundabout, wild animals.

As far as I can tell, it's a combination of sign recognition via the front-facing camera, and map data. The sign recognition seems pretty reliable. The map data, though, is of wildly variable quality - in some areas near me (northeast Wales), the data is wrong more than it's right. And unfortunately, when there's a discrepancy between what the car 'sees' and the data it's pulling from the onboard maps, it seems to give preference to the map data a lot of the time, so the correctly-detected limits from roadside signage are overridden by the incorrect speed limit data from the map.

There are a number of threads where people are complaining that it picks up long removed temporary speed limits. There are no signs at all to see now, but on the M1 and M4 it comes up with 50 mph at places where there were roadworks many moons ago.

I see the same problems around East Bristol.

Road works related speed reductions don’t take more than couple of days to show on my 2025 Superb. They can take a couple of months to revert to standard after the works are complete.

I haven’t yet seen the issue with truck speed limits (where different) showing on my screen.

I do however see some unrestricted country roads showing a 30 limit. I’m happy with that, the lunatics who fly round single track roads, continue to do so of course.

My incidences of this was on the M4 and M6. Several times on the M6 between Hilton Park and exit 32 NB. On the M4 around the E/B exit to the Maidenhead.

At the time there were no signs of any temporary speed limits at all.

This used to happen in my Merc. I did wonder if it was reading the max speed signs on the rear of lorry trailers asI passed.

Until recently I had these on the M4 on both sides of the junction with the M25 heading out of town. Both are gone now. Hopefully the one near junction 8/9 will be gone now as well 🤞!

The camera is easily confused. On my regular local route, there are school crossings with "20 when lights flash" signs.

The car ALWAYS starts to chime to warn me that I am doing 30 in a 20 limit.

We used to have a 2016 superb that got its speed limits from map data and it was very accurate provided you remembered it didn't know about temporary speed limits etc. Now we a camera based system on our 2025 model and it is wrong several times a journey. Sometimes you'd be cruising on a motorway and without warning it would start bleeping and flashing saying a 30 speed limit is in force. I'm glad I never use the speed limit cruise control. I'd probably be dead. In our area speed limit signs for side roads confuse it. This must be the most useless invention ever.

I have never seen 30 mph speed limits at the side of motorways or at the on and off ramps. I am either blind or there are no such signs!

They're there alright!

Some are so badly positioned they confuse Mk1 eyeball, let alone camera recognition.

Maybe a southern thing. Englishshire.

Last weekend we drove from Bristol to South Manchester for a few days with my Sister. Traveled on the M4, M5 and M6.

On the M4 and M5, no ghost limits,great.

The M6 from Spaghetti junction to Sandbatch, I had at least 7 ghost limits most at 30mph whilst in 60mph limit. A couple of 50 mph in normal 70mph stretches. There hasn’t been a roadwork in these areas for a few months.

On the South bound journey I had 1 ghost 60mph in a 70 stretch.

My mates mid sized Volvo phev , has the same issues. We drove from East Bristol to Weston Super Mare to see a sick buddy. The car showed about 5 on the way down but only 2 onl the way back

Edited 8 hours ago8 hr by Trickiejohn

On 03/06/2026 at 19:17, FOSTER91 said:

I presumed it was getting it from GPS data like Waze does however on the A75, there are outdated 40mph signs for lorries see image and the car changed its limit to 40mph which is obviously incorrect. Therefore I'm thinking there is a front facing camera which reads the speed limit signs similar to it reading other signs which then flag up on the dash, ie narrow road, roundabout, wild animals.

I can confirm @FOSTER91 observation. It's a regular problem here in Scotland where some trunk roads still have different speed limits for goods vehicles. I passed this sign on a run along the A90 yesterday and the car immediately switched to 60mph warning. It then happily chimed at me for the next 10 minutes until it finally decided that 70mph was ok.

Isn't all of this terribly bad news for autonomous cruise etc? If so, it rather defeats the ability to set & forget? Or does it not work this way?

PS. I am asking because we don't collect our car until next month.

Edited 2 hours ago2 hr by Arianne

It works exactly that way (or should I say, it doesn't work). The cruise control would have switched to 60mph and the car would start to slow, requiring a manual override of the cruise setting to keep it at 70. Going down to 60 from 70 is an annoyance, but when it decides you should suddenly be doing 20mph instead it can be a real challenge. Autonomous cruise control was one of the first driver-aid features that I turned off.

At the same time, I turned off the map-based 'road layout' speed control. That slows you down as you approach junctions, corners, roundabouts, etc. where the speed limit is going to be too fast for the manoeuvre. It does work, but it is vastly overcautious. It starts to slow you down a long way from the bend AND slows you down much, much, more than you really need. I'm happier manually slowing when I need to and re-engaging cruise control afterwards. In flowing traffic, the car in front slowing will normally do that job for you anyway.

So I am left with the Adaptive Cruise Control working pretty much in the same way as my Mk3 did - which suits me just fine. I manually set the speed according to the real speed limit and conditions, and then let it take care of itself. The preferred gap setting on the stalk is great for adjusting the distance between you and the car in front, and seems to be calibrated in seconds (although that is just my suspicion without any documentation to support it) - each extra step on the adjuster adds another 1 second to the gap. Really useful, for example, for dynamically increasing your survival gap in heavy rain or icy conditions.

The only downside of the cruise control compared to the Mk3 (in my opinion) is that it takes quite an assertive flick on the stalk to change in 5mph steps; a gentle tap only changes by 1mph. The Mk3 stalk had the gentle tap for 5mph and separate actions for 1mph fine-tuning. With adaptive cruise control you don't need to be fiddling with 1mph tweaks in order to match other traffic; it is normally 5mph changes to align with a new speed limit. Six months in with the new car and I'm still training my muscle-memory to be more firm when adjusting the speed setting.

Like many of the driver aids in the Mk4, you'll find that the full predictive cruise control doesn't work as well as you would want it to. It's not all Skoda's fault - the state of the art just isn't there for the autonomous systems to understand what is really going on in the outside world. Defaulting to 'better safe than sorry' is a valid strategy, but it does mean the car will fight you when it doesn't need to. Imagine the world's most nervous back seat driver as your co-pilot and you'll get the idea. Perhaps AI will get it fixed in the future - at which point the Superb's driver aids will be spectacular - but we might have to wait for the Mk5 for that.

Very much Skoda's fault for allowing the parent company to provide them with some total guff IT while VW & Audi has the crap sorted out much sooner. All to do with VW Group taking Software Development in-house.

Thank you @Coral-C , much appreciated. That's very clear and seems to represent the sensible middle ground of technology serving the driver, rather than the other way around.

One additional question, if I may: are you able to retain the lane centre function so that you don't need to constantly microcorrect the car as the motorway curves slightly etc? Or do you switch this off? I am kind of hoping this is a useful aid as it's not one I have had before on the Velar.

5 minutes ago, Arianne said:

One additional question, if I may: are you able to retain the lane centre function so that you don't need to constantly microcorrect the car as the motorway curves slightly etc? Or do you switch this off? I am kind of hoping this is a useful aid as it's not one I have had before on the Velar.

Yes, lane following works and I leave it on. It's not full self-steering - you get about 30 seconds before it tells you to take over steering and automatically disengages. But I do find it useful for those busy moments in dense traffic when you could easily get distracted and drift out of lane.

I believe you can have it in stick-shaker mode, where the wheel just vibrates if you are going to leave the lane, but I have it in full lane-following mode. In both cases, there's no intervention if you are indicating to change lane (unless it detects a car in the blind spot).

There are mixed reports about it. Some like it, some switch it off. It's more aggressive and twitchy than the old Mk3 but I've seen similar reports from other brands' newer cars. On some urban roads, the wheel will jerk a little from time to time for no apparent reason. And it's not entirely happy if you adjust position within a lane to avoid a pothole or manhole cover. But on motorways and trunk roads, it is very good indeed.

Overall, I prefer to leave it on - even around town for normal driving. It's not quite as smooth as the old Mk3's system, but it's perfectly adequate. I think you will find it useful, especially on your long trans-Europe runs.

Thanks again @Coral-C . I am looking forward to that feature for the pan-euro trips. It takes me time to learn the features of a car and for it to become part of my unconscious competence. It's at this point when I tend to enjoy the car most. The new car, excitement stage is great but frustrating at one and the same time. Unbelievably, I am still finding features in our Mercedes SLC200 which we have owned since 2017. AI helps tease these hidden features out from the car!

Best wishes.