When drivers rated their ability behind the wheel, about three-quarters thought they were better than average. Strangely, those who had been in an auto accident were more likely to rate themselves as better drivers than did those who driving record was accident-free.
Even stranger: In general, most people rate themselves as being less likely than others to overrate their abilities. These inflated self-ratings reflect the ‘better-than-average’ effect, which has been found for just about any positive trait, from competence and creativity to friendliness and honesty.
~ Daniel Goleman, Focus: The Hidden Driver of Excellence (2013), p. 74