A study of CCTV footage from 700 British car parks and interviews with 2,000 drivers, which compared the parking of males and females, showed women to be better parkers than men.
http://news.ninemsn.com.au/world/8411509/the-driving-truth-study-says-women-are-better-at-parking
Seven areas were investigated including how fast drivers found a parking space, how they drove into it, how long it took to park, how much they repositioned the car and the final result.
Actually the result was pretty close, with women scoring an average of 13.4 out of a possible 20 and men scoring as average of 12.3.
Women found a parking space quicker than men, apparently because men drove too fast and missed available spaces (sound familiar?). On the other hand men parked faster, taking an average of 16 seconds compared to 21 for women, and spent less time repositioning their cars. A higher proportion of women parked their car in the centre of the space, however.
This study should provide a boost to women’s confidence. Only 18 per cent of women in the study thought they were better parkers than men, and 28 per cent believed they were better parkers than their partners.
Mr Neil Beeson the driving instructor who designed the study for NCP car parks was rather suprised by the finding, and one does tend to question his motives given his obvious bias.

Can men park in the street as well as women? The jury is still out!
Although this is clear evidence of, at the very least, little or no gender difference in parking and related spatial ability, Mr Beeson may be comforted by the fact that limiting his study to car parks meant it was unable to assess parallel street parking. Interestingly Mr Beeson’s research showed that more men than women reversed their cars into car park spaces, so he may prove his point in the next study.