Driving too fast is the biggest cause of arguments between partners on car journeys, according to research by the online used car channel, Tesco Cars. In a survey conducted by the website, speeding (22%) was a bigger source of in-car spats than getting directions wrong (18%), tailgating (13%) and parking prowess (5%). Men and women alike admitted kicking up a fuss about their partners breaking the speed limit. Twenty one percent of female drivers cited it as the most likely thing to trigger a fight, compared with one in four men.  More