Almost half of those polled (46%) had concerns that the on-board computer could malfunction, while 30% said they were worried the cars could be hacked and hijacked.
The list of safety fears continued with 30% admitting concerns about hazardous interactions with non-self-driving vehicles and 22% saying poor weather conditions could harm the vehicle’s performance.
Cost was another significant negative, with 46% saying they feel the vehicles would be too expensive.
Respondents said the main positive of the technology would be a reduction in speeding (39.7%), followed by allowing everyone to drive including those with disabilities (39.5%) and taking the issue of human error out of driving (37%).
Overall, just 34% of those polled said they would consider purchasing a self-driving car when they become available to the public, with a further 34% saying they would not and 32% admitting they did not know if they would invest in the technology.
Men were slightly more likely than women to say they would purchase a self-driving car and also more optimistic that they would cut down speeding (35.8% vs 45.3%).
Younger people were also more likely to show an interest in the technology, with 49% of 25-34 year olds saying they would buy a self-driving car compared to 22% of 55-64 year olds.