Jerad Gilbert and advanced driving instructor Ron Collins

Jerad Gilbert joked that he now hoped his stepfather would allow him to drive his Porsche 911 supercar.

The teenager from Llandrindod Wells, Powys, passed the standard test and an advanced course within six months.

Ron Collins, a driving examiner for 32 years, said it was unusual for someone to pass the advanced test so quickly.

Jerad took his standard test in October and was also successful in a pass plus course, which is designed to improve new drivers' skills behind the wheel.

Jerad said one of the motivations for getting through all three tests was to lower his motor insurance.

"It (the course) was recommended to me by my stepfather, now I hope he will let me drive his Porsche 911."

He said passing the advanced course had given him greater confidence and said he would recommend it to other young drivers.

It is very unusual for someone to pass their advanced test so quickly Ron Collins

Ron Collins, of Mid Wales Advanced Motorists, who was Jerad's instructor, said it was unusual for someone to pass their advanced course so quickly after the standard test.

"What I liked about Jerad was that he listened and didn't question everything - he is very, very receptive and intelligent," added Mr Collins.

"When he did raise a question it was sensible. There was nothing unusual about his driving, but he just paid attention and worked hard.

"It is very unusual for someone to pass their advanced test so quickly. You can't take it until three months after passing the standard test anyway."

He added that many young drivers received a bad press, but there were some who did not deserve it.

Last month, a study suggested that young motorists were more likely than older people to take "extreme and life-threatening" risks while driving.

UK Government transport statistics show more than 14 young drivers and their passengers die every week in Britain.