Emily Mortimer is an "unreliable" driver.

The 'Cars 2' actress - who has children Sam, seven, and 18-month-old May with husband Alessandro Nivola - wants to buy a car but her spouse has suggested she stay off the roads because her abilities behind the wheel are limited.

She said: "My first car was an old Saab. And then I had a BMW that my father-in-law joked he needed tetanus shot to get into because it was just so full of old half-eaten sandwiches and bits of coke cans and things.

"But my husband doesn't allow me to drive anymore because I'm very unreliable.

"We live in New York and my husband refuses to get a car because it's just so nightmarish parking and I'm desperate for a car. I don't know why, I just really want one."

The 39-year-old star recently borrowed a vehicle from her friend to prove to her husband she could cope, but admits it turned out to be a disastrous move.

She said: "I borrowed a friend's car when they went on holiday to prove to him it would be fine and within the space of a morning, I got three tickets and when I drove past into the back of another car the number plate fell off so I had to take it to a garage.

"The same time, I got ticketed for driving while I was on my phone, driving without a seatbelt and then for parking in the wrong place. So yes, I'm banned from driving now."