A driving examiner failed a learner's driving test for having tiny pencil rubber filings on the carpet underneath the passenger seat of the instructor's car.
The 17-year-old, who prefers to be unnamed, was waiting months for her test and hasn't got behind the wheel since the alleged incident at the Blackpool Test Centre.
After the examiner refused to get in the car, the instructor apparently asked for a second opinion, which was refused.
Paul is the teen's father from St Michaels on Wyre, Lancashire, and he said: "It was the instructor's car and it was spotless apart from a few tiny bits of rubber from when the instructor had rubbed something out of his diary.
"The filings weren't on the seat or anywhere were the examiner would be sitting. It wasn't like there were crisp packets and empty tins everywhere, it's ridiculous.
"They spent about 10 minutes trying to discuss it and sort it out, but got nowhere.
"So she's failed without even driving the car, and there's no way of getting the money back. She was distraught, in floods of tears.
"I can't see a reason why he couldn't get into the car. At the end of the day, these people are civil servants and they need to be accountable.
"There's such a backlog of people wanting to take their test, and this is making it worse."
It currently costs £64 to take a practical driving test and at the moment, there is believed to be a four to five month waiting list.
Theory tests expire after two years, which is adding to the woes of learners stuck on a waiting list.
Mr Turner added: "We live in a rural community, we don't have buses coming passed.
"She will be coming to the end of college in summer, and her job prospects will be limited if she can't drive.
"Not only that, but this is one of the most nerve-wracking things a teenager does, it's one of those stand-out moments in your life, and this has just made it worse.
"She's saved up for this for a long time, she's saved up herself for her first car, and this is so unfair."
The DVSA said in a statement to LADbible: "DVSA’s priority is to protect our customers and staff and stop the spread of COVID-19.
"Guidance has been issued that cars used on driving tests must be cleaned before the test to lessen the chance of infection.
"Driving tests will not go ahead if this has not been followed to ensure public safety."
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Anish Vij