However, he has confirmed it was more dangerous for diesel drivers to make the mistake with petrol than vice versa in a major warning.
He said: “Even under normal circumstances, 400 motorists accidentally put the wrong fuel in their vehicles every day.
“But these aren’t normal circumstances, and with stress levels rising and tempers flaring at petrol pumps across the country, there’s a very high chance that we could see a record level of misfuelling incidents.
“If you do put the wrong fuel in your car, what you do next can determine whether you’re going to face a huge repair bill, or not.
READ MORE: Farage urges Boris to condemn ‘selfish’ Britons panic-buying fuel