What are the child car seat rules in Denmark?
Height decides, not age
Short answer
In Denmark children shorter than 135 cm must use approved child safety equipment in the car, such as a car seat or booster cushion that suits their height or weight. The seat must be approved under ECE R129 (i-Size), 44-04 or 44-03. Since September 2024 shops no longer sell ECE 44 seats, but you may still use them. If a child is not secured correctly, the driver gets a fine of 2,000 kr. and a klip on the licence, as of November 2026.
Why
- The 135 cm rule applies to every seat in the car.
- Only approved seats count.
- The driver is the one who is fined.
Details
A baby seat is used from birth to about 15 months, for children of 0–13 kg, and faces backwards.
Tip
If you rent a car seat with the car, check the approval label for R129, 44-04 or 44-03 before you fit it.
What may differ
Special rules and exemptions can apply, for example in taxis and buses.
Common misconception
A child can use an ordinary seatbelt once it turns a certain age.
What actually happens
Height is what counts: a child needs approved equipment until it is at least 135 cm tall.
People also ask
- Can a child sit in the front seat in Denmark?
- Is it compulsory to wear a seatbelt in Denmark?
- Can you rent a child seat with a rental car in Denmark?
Sources
- Danish Road Safety Council: Children in the car, what does the law say?Checked at:
- Retsinformation: Consolidated Road Traffic Act (LBK no. 118 of 12 January 2026)Checked at:
- Danish Police: Guideline fine rates for breaches of the Road Traffic Act (version 27.02.25)Checked at:
- Danish Road Safety Council: Car seats for babies aged 0–15 monthsChecked at:
This answer is for reference only. Traffic rules, fines and fees can change, so check the Danish authorities before you drive.
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