The average couple will have an argument 22 minutes into a car journey together, Britain's Daily Mail reported Friday.
Of 3,000 motorists surveyed by Spanish car company Seat, 71 percent have had blazing arguments with their other half in the car, with one in ten saying it resulted in a breakup.
The most frequent cause of disputes was getting lost, with 44 percent of respondents saying fights over directions were a problem for them. Finding a parking spot came second with 37 percent getting irked in parking lots, while problems like driving too quickly, slowly or aggressively rounded out the top ten.
Nearly a quarter of couples flat-out avoid driving together, which is no wonder since a surprising 20 percent said they have become so frustrated they have pulled the car over and refused to resume driving until their partner gets out.
Around the same number, 19 percent, have opted to walk home rather than stay in the vehicle with their other half.
"Many journeys can be stressful if you get caught up in traffic or can't find your way. But it seems much of the stress is caused by our own partner when we are behind the wheel," said a Seat spokesman.