A recent study by Satrak Plant Security has revealed that nearly a third (31%) of the 2,000 people surveyed said they were "fairly" worried that a vehicle would be able to be stolen through hacking a component or feature of a car, while 15% said they were "very" worried and just 10% said they weren't at all worried.
And it seems people seem unsure of how secure connected vehicles will be, as nearly six in 10 (59%) believe vehicle hacking will soon become an issue for connected vehicles.
The average car now contains between 50 and 100 electronic units or computers, and two fifths (40%) of respondents said that, as cars become more integrated with digital technology, they consider vehicle hacking to be a "fairly serious" issue.
When asked what brands they trusted most with connected technology and security, Mercedes-Benz and BMW were the most trusted, each cited by 29%. Meanwhile, Renault and Citroen were seen to be trustworthy by just 9% and Fiat was the least trusted, with just 7% showing faith in the Italian car maker.
Managing director of Satrak Plant Security, Dan Walton, said: "When we think about a car being broken into, we tend to imagine smashed windows and coat hangers being jammed into doors, but time are changing.
"Vehicle technology and security is like an arms race and it's important that manufacturers keep ahead of sophisticated criminals who know how to undermine the security of a vehicle through its digital components."
According to research firm Gartner, by 2020, there will be at least 250 million connected cars on the roads.
Do you think connected vehicles could be open to hackers?