Motor insurance costs are rising for the first time since 2017, partly due to Brexit uncertainties, according to the AA.
Over the past three months, the cost of a comprehensive policy has increased on average by 2.7% to £ 609.93.
The premiums have also risen as an expected reduction in claims costs will only take effect from April 2020.
"Behind all this, however, are concerns about the Brexit," said the insurance director of AA, Janet Connor.
She said, "Regardless of what the final deal looks like, the market continues to struggle with the value of the pound.
"This has led to rising costs of imported auto parts, which further increases the auto repair industry, ultimately leading to the premiums we pay for."
Another key factor is the law on civil liability, which limits the costs of flogging.
The law was expected to come into effect when the law came into force last month. However, it will not take effect for more than a year.
"Although the Civil Liability Act has now been passed, the delay in the new rules until April 2020 meant that premiums reductions were premature, expecting that the cost savings of claims would go hand in hand with the upward adjustment of the discount rate, Ms Connor said.
Just a blip?
The AA survey confirms similar numbers released by MoneySupermarket earlier this month. This showed that the premiums had reached their highest level since January 2017.
Website chief editor Tom Flack said, "It's often more expensive to buy insurance in December because there are more cars that need it, so insurers do not have to fight so hard for the business.
"That is, it's harder to say if the hike in the last quarter of 2018 signals a long-term rise or just a blow."
The AA warned that younger drivers would have to taste the biggest prize if they paid with an average price of £ 1,317.
Ms. Connor said, "Young and newly qualified drivers face a significant penalty in insurance pricing, not least because they have not built a bonus without compensation.
"So it's no wonder that some take the risk of driving without insurance."
She said that the Motor Insurers & # 39; Bureau (MIB) issue around 3,000 insurance letters to uninsured drivers every day.
John Blevins, Consumer Intelligence pricing expert, said black box policies - using telematics technology - are the best way to keep premiums down.
He said, "Average premiums are rising at the fastest rates for over-50s.
"Telematics plays a key role in keeping prices under control, especially for under-25s, who benefit from personalized pricing because of their good driving habits.
"If older motorists want to take more control over the premiums and avoid general price increases due to their age, they should look at the telematics."
The AA has demanded that new drivers using telematics be exempted from the Insurance Premium Tax (IPT) to reduce the costs of the policies.
"Telematics guidelines track driver behavior and premiums reflect the driving standards of individuals," said Connor.
According to AA, the number of allegations asserted by drivers with telematics boxes in their vehicles is up to a third lower than those without them.
"Reducing IPT for young drivers using telematics policies not only deters uninsured driving but also improves traffic safety for all," she said.