Relatives of a Bristol mother-of-two killed by a dangerous driver say they are "disgusted" at his five-year jail sentence.

Anton Varga was estimated to have been driving a BMW car at twice the speed limit while nearly twice over the drink-drive limit before crashing it at the Three Lamps junction of the A4 and A37.

Already disqualified from driving, he also had cannabis in his system at the time of the accident, exactly two years ago on Wednesday, April 1.

Bristol Crown Court heard his friend Natalie Grant, aged 31, who was not wearing a seatbelt and is believed to have been lying on the back seat, was thrown from the car and crushed to death as it rolled.

Varga, of Brookside Road, Brislington, was jailed at Bristol Crown Court on Tuesday after admitting a charge of causing death by dangerous driving.

At the start of Tuesday's hearing the 22-year-old had applied to change his plea to not guilty, claiming he had lost all memory of the accident, but the bid was rejected due to lack of grounds.

Imposing the jail term, Recorder of Bristol Judge Tom Crowther told him: "The fact is plain and you accept the fact that you were driving, you were driving at twice the 30mph limit and at the time you had taken alcohol to around twice the legal limit. You drove too fast and your ability to control the car was impaired."

Varga sobbed as he was led from the dock, as did the mother of his six-month-old baby boy in the public gallery.

After the hearing Ms Grant's sister Tammy, 26, of Padstow Road, Knowle West, said: "I think five years is disgusting, considering he's put us through two years of lies and he's made no apology, not so much as a letter.

"Natalie was fun, outgoing, she would do something for anybody and she wouldn't hurt anybody.

"She left behind two teenage girls. They are at their prime and she won't see them grow up, get married and have kids and they won't have their mum.

"She was the best sister I could have had."

Jonathan Stanniland, prosecuting, told the court it was at 5.37am on April 1, 2007, when the J-registered BMW 318i slewed out of control at the junction of Bath Road and Wells Road, heading into the city.

Mr Stanniland said the car collided with railings, span anti-clockwise and struck a pedestrian island before flipping on its side and rolling.

He said: "Because of the car contacting with the kerb, the door was forced open and, tragically, Natalie Grant was ejected from the car.

"She was not wearing a seatbelt and she was thrown out of the car.

"The vehicle continued to rotate, it ended up on its roof and then its nearside."

The court heard the car was found to have no mechanical defects.

A witness recalled how Varga undertook him at 50 to 60mph before losing control.

Other witnesses recounted how he appeared from the wreckage and asked them if they had seen the driver run off.

The court heard Varga also claimed Ms Grant had been driving and had been drinking.

Mr Stanniland said a back-calculation of Varga's blood concluded that, at the time, he would have had around 157 milligrammes of alcohol in 100 millilitres of blood – almost twice the 80mg limit. He was also found to have traces of cannabis in his blood.

All Varga could tell police was he and Ms Grant had been out, he had had a lot to drink at his aunt's house and then a couple more drinks in a pub, and he couldn't recall anything else other than waking up after the accident.

Neil Treharne, defending, said his client had no memory of the accident but suffered post-traumatic stress disorder involving flashbacks and sleepness nights, a condition confirmed by a psychiatrist.

He said Varga had no idea why they had been in the car but it was possibly to get cigarettes.

Mr Treharne said: "It is always difficult when someone has no memory.

"It was a terrible tragedy and he does feel remorse. His family is close-knit, he has a new girlfriend and baby Oliver, aged six months, who he is absolutely devoted to.

"He doesn't drink any longer and doesn't participate in peer pressure or taking drugs. He has dramatically changed his life."

PC Ian Paine, the officer in charge of the case, said afterwards: "It goes to show one moment of irresponsibility by a disqualified driver travelling at too high a speed, having consumed alcohol, can very quickly lead to a tragic loss of life.

"It also reinforces the message about wearing seatbelts, whether in the front or back."

Varga was banned from driving for five years and ordered to take an extended driving test before he is allowed on the roads again.