Child Seat Rules and Penalties in the UK


Sixt Car Rental have launched a campaign to educate consumers regarding the rules and regulations of child safety seat use in vehicles in the UK.

“It is estimated by the National Highway Traffic Safety Administration and the Seat Check campaign that 7 out of 10 of car seats on the UK are not installed correctly.”

The rules in the UK vary based on the age and weight of the child. Full regulations can be found on the Sixt UK website however here are the main points:

  • If a child is under 3 years old, they must be in a rear facing child seat for as long as possible (which is usually until around the age of 1 or a bit over).
  • Once they have outgrown the rear facing child seat, they should be in a front facing child seat with a built in safety harness, preferably in a position where they are protected by an airbag and only if deemed safe by the vehicle manufacturer.
  • After the age of 3, children must be seated on a booster seat until they are at least 4 feet 5 inches tall. Under any other circumstances, it is illegal for a child to use an adult seatbelt as in case of an accident, it can cause serious internal injury to the child or they could actually slide out beneath the belt entirely.

Penalties in the UK for breach of any of these rules include fines of up to £500.

Sixt have also released a useful infographic – “How to Install a Child Safety Seat in your Car”.


Sixt have all 3 types of child seat available for their rental vehicles (rear facing, front facing and booster seats), the full specifications, images and descriptions of which can be found here.

To find reviews or information on all of Sixt's locations within the UK including maps, opening hours, phone numbers and address details please click here.

When traveling by air, do you take your own child seats with you or do you rent them from the car hire company?


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