As thousands of people prepare to take to the roads this Bank Holiday weekend, the top reasons for arguments in cars have been revealed.
It seems that Irish people argue most over directions and how to get to their destination.
Other bug bears include fighting over what channel to listen to on the radio, eating messy food and making unscheduled stops.
The study by Enterprise Rent a Car also shows that women complain their partners drive too fast, while men get impatient if they feel the driver is going too slowly.