A national survey by Which? found that 54% of UK drivers regularly disable at least one core Advanced Driver Assistance System (ADAS) – such as lane-keeping aids, emergency braking, or intelligent speed control. Designed to reduce collisions and improve safety, these systems are instead being labelled “distracting, dangerous, or useless” by many of the very people they’re designed to protect.
Speed Control System Proves Most Annoying
The most frequently disabled feature was Intelligent Speed Assistance (ISA) – a system that became mandatory for new car models sold in the EU from July 2024. While not required in the UK, most new cars sold here are still fitted with ISA as standard.
Nearly half (46%) of UK drivers said they regularly turn the system off, complaining about constant beeping, steering-wheel vibrations, and inaccurate speed readings. ISA also cannot be permanently disabled under EU rules, meaning drivers must switch it off every time they start the car – often by navigating fiddly touchscreen menus.
Lane Assist and Emergency Braking Also Unpopular
Lane-keep assist was the second most disliked feature, with 42% of drivers disabling it. Some users said it made them feel unsafe, particularly on narrow roads or in the presence of cyclists. Reports have even emerged of the system steering drivers into danger – including one case involving the popular MG4 EV.
Emergency braking, intended to prevent rear-end collisions, was turned off by 34% of drivers surveyed. Although this feature scores well in safety testing, respondents described it as unpredictable and uncomfortable.
Experts Warn of Trust Deficit
The findings have sparked concern from safety advocates. Which? magazine editor Harry Rose said: “These features should be keeping motorists safe, so it is concerning that so many people are turning them off.”
The Road Ahead
From 2026, Euro NCAP will begin rating ADAS for ease of use, placing greater pressure on manufacturers to improve design and usability. Until then, a combination of driver education and clearer regulation may be needed to bridge the gap between intention and implementation.
Ed; With statistics like these I always wonder if those who do not ‘turn it off’ have actually used the systems – and trust them? Would you let us know please?