Child car seat rules by country
Most countries require a child restraint until a child reaches a certain age, height or weight. The biggest difference is how long children ride rear-facing: Sweden expects about age 4, while many places only advise it to 15 months. Always verify the current local law before you travel.
| Country | Rear-facing rule | Booster / height-age rule | Notes |
|---|---|---|---|
| United States | Rear-facing to at least age 2 (longer if the seat allows) | Booster until the seat belt fits, about age 8–12 or 145 cm | Laws vary by state; the back seat is safest for under 13 |
| United Kingdom | Rear-facing advised to 15 months (i-Size); not legally required | Child seat until 12 years or 135 cm tall | Backless boosters banned for under-3; front-seat use restricted |
| Germany | Rear-facing advised; restraint required under 12 and under 150 cm | Booster / seat until 150 cm or age 12 | Must use UN-approved (ECE) restraints |
| Sweden | Rear-facing until at least age 4 (often to 5–6) | Child seat until 135 cm; booster after rear-facing | Among the strictest rear-facing norms in the world |
| France | Rear-facing advised to 15 months; seat required under 10 | Child restraint until 10 years or 150 cm | Children under 10 barred from front seat if rear seats free |
| Australia | Rear-facing to at least 6 months (12 months advised) | Approved restraint to age 7, then booster if under 145 cm | Type-approved seats only; rules set per state |
| Japan | Infant rear-facing until about 1 year / 10 kg | Child seat required under 6; booster not separately mandated | Law requires restraint for children under 6 |
| South Korea | Infant rear-facing until about 1 year / 9 kg | Child seat required under 6; booster not separately mandated | Fine if an under-6 child is unrestrained |
| China | Infant rear-facing; restraint required under 4 (varies by city) | Booster / seat advised for ages 4–12 | National standard GB 27887; local laws differ |
| Singapore | Infant rear-facing to about 6 months / 10 kg | Restraint required under 1.35 m (roughly age 8–12) | Children under 1.35 m cannot use an adult belt alone |
Notes
- Rules differ and change often; this table is a general guide, not legal advice.
- Rear-facing is proven safer for young children's necks and heads — keep it as long as the seat allows.
Frequently asked questions
- How long should a child ride rear-facing?
- As long as the seat allows — at least to age 2 in the US, and Sweden commonly keeps children rear-facing to about age 4. It protects the head and neck.
- When can a child use a booster instead of a harness?
- After they outgrow the forward-facing harness seat, typically around age 4, and until the vehicle seat belt fits properly (often age 8–12 or 145 cm).
- Do rules really differ by country?
- Yes, a lot. Height thresholds range from 135 cm (UK) to 150 cm (Germany, France), and rear-facing expectations vary from 15 months to 4 years.
- Is the back seat required for children?
- In most countries the back seat is the safest and often legally required for young children; some (e.g. France) bar under-10s from the front if rear seats are free.