Manchester United forward Carlos Tevez had his £140,000 Bentley seized after it was found he did not have a full UK driving licence, Greater Manchester Police said on Saturday.

The Argentina international was stopped by traffic officers on the hard shoulder of the M60 near Stretford in Manchester and they impounded his white Bentley Continental GT Speed.

Police said they asked him to pull over, suspecting the car's windows were too dark. Tests at the roadside showed the tint was illegal, police said. Tevez, 25, is now being investigated by Greater Manchester Police for driving without a valid licence and could face prosecution, a police source said.

The maximum penalty for driving without a valid licence carries a £1,000 fine and six points.

A Greater Manchester Police spokesman said: "Shortly after 9.20am on Friday 6 February 2009, traffic officers pulled over a Bentley close to junction 7 of the M60.

"The officers were concerned certain windows were illegally tinted. They were tested and found to be too dark so a prohibition notice was issued to the driver.

"When asked to provide his documentation, it was discovered the driver did not have a full UK driving licence and was advised to arrange removal of the car.

"As he could not arrange this, the car was removed under Section 165 of Road Traffic Act 1988."

In 2007, fellow United star Cristiano Ronaldo was stopped by police and fined for having blacked-out windows on his £140,000 Bentley convertible.