The online poll, from motorway management company La Fondations Vinci Autoroutes and survey agency Ipsos, found that the vast majority of drivers from across 11 European countries admitted to regularly breaking the rules of the road.
It asked 11,038 people aged 15 and over - depending on driving age - including at least 1,000 people in each of the 11 countries polled.
Drivers in Mediterranean countries - such as Greece, Spain, Italy and France - were widely considered to be the most "disrespectful", while the Swedish were deemed the most "courteous", followed by the Slovakians and the British.
The French were found to be the least likely to indicate (63% admitted to not doing this), while the Germans were most likely to speed on the motorway (93% admitted to this).
Over two thirds of the Swedish (78%) admitted to not respecting safe distances between themselves and the car in front when driving, while the Spanish were most likely to hoot their car horn (66%) at anyone who annoyed them on the road.
Comment: You can tell a lot about a culture by their drivers.