Sweden decides child seats by height, not age, and checks the approval label, not the brand. Here is what the law actually says, where official advice goes further, and what that means for a seat from home, a rental car and an airport taxi.
When you need this
You’re packing for a family trip and wondering whether to bring your own seat, or ticking the child-seat box on a rental booking. Maybe you’re landing at Arlanda with a toddler and need a taxi, or borrowing a relative’s car for the week. Or you’ve just realised your American seat might not count here.
The rule: 135 cm, not an age
Every child shorter than 135 cm must use a child seat, a booster seat or a booster cushion, either instead of the car’s belt or together with it. The rule is in the Road Traffic Ordinance (trafikförordningen, 4 kap. 10 §). It covers cars, vans and trucks, and three- and four-wheeled mopeds and motorcycles with a body.
Height is the only test. A tall nine-year-old may already be past the booster, while a small eleven-year-old under 135 cm still needs one. Measure your children before you travel.
The seat also has to suit the child, be installed the way its manual says, and be used as intended. That’s a binding rule in Transportstyrelsen’s regulation (TSFS 2014:52 7 §), not just good advice.
Which seats are legal in Sweden
Sweden accepts a seat only if it is type-approved under one of these:
| Approval | Common name | Legal to use in Sweden? |
|---|---|---|
| UN Regulation 129 | i-Size | Yes |
| ECE Regulation 44, version 03 or 04 | R44/03, R44/04 | Yes |
| EU Directive 77/541/EEC as amended | older EU approval | Yes |
| Old Swedish “T” mark only | T-märkt | No, banned since 2008 |
| US FMVSS 213 only (or another non-European standard) | US or other non-ECE seat | Generally no |
R44 seats have not become illegal. Shops in the EU stopped selling new R44 seats in September 2024, but the Swedish regulation still lists ECE 44-03 and later. A seat you already own stays legal.
A seat from the US, Canada or Australia is the real trap. Swedish law has a closed list of approvals, and a seat certified only to a non-European standard, such as the US FMVSS 213, is not on it. Using one exposes the driver to the 2,500 kr fine. Look for an “E” in a circle on the approval label; if it isn’t there, rent an approved seat instead.
Airbags and the front seat
Never put a rear-facing seat in front of an active airbag. It is against the law (TSFS 2014:52 8 §), and Transportstyrelsen calls the combination life-threatening.
Switch the passenger airbag off as the car’s manual describes, or put the seat in the back. Side airbags are not the problem: Transportstyrelsen says they pose no danger to children in child seats.
The 140 cm figure is advice, not law. Many websites describe a legal ban on children under 140 cm in front of an airbag. The binding rule is narrower: only a rear-facing restraint is banned. The 140 cm threshold comes from both transport agencies’ safety advice, which says a child is only safe in front of an active airbag from that height. It’s sound advice, so follow it anyway.
Rear-facing for longer. Sweden is known for keeping children rear-facing much longer than most countries. The national recommendations presented by Trafikverket say at least four to five years, preferably longer. That is guidance, not a legal requirement.
Taxis, short trips and buses
The law has two narrow exceptions, and they split by age:
| Child | Without a child seat, allowed only… | Where they sit |
|---|---|---|
| Under 3 | on an occasional short taxi ride | Not in the front seat |
| 3 or older, under 135 cm | on occasional transport over short distances, in any vehicle with no child restraint available; use the adult belt if possible | Not in the front seat of a car or light van |
Neither exception is defined in kilometres or minutes. The statute says only tillfälliga (occasional) and korta sträckor (short distances). And neither is a way to leave a seat you have at home: both apply only when the vehicle has no possibility of using a child restraint.
Uber and Bolt rides count as taxi rides in Sweden, because their drivers hold taxi licences and drive taxi-registered cars.
Buses are different. The child-seat rule doesn’t cover buses at all. Passengers older than three must wear a belt where the bus has belted seats, but local town buses are exempt from that duty.
Belts and child seats are also not required while the car is standing still, when reversing, or when driving inside a car park, fuel station or workshop area.
Rental cars and taxis in practice
Rental cars. Companies offer infant seats, child seats and boosters as a paid add-on you choose when booking. Seats are subject to availability, and airport desks can run short, especially in the busy summer season. Reserve the seat with the car, and ask whether staff fit it or you do.
Taxis. Provision varies by company, so ask when you book. As one example, Taxi Stockholm’s cars always have a built-in booster cushion (inbyggd bälteskudde) for children over 4 years and 15 kg. A rear-facing seat for children over 9 months and 9 kg can be booked in the app, on the web or by phone for a surcharge. The company doesn’t supply infant carriers (babyskydd), but you may fit your own, and most of its cars have ISOFIX points.
For a baby, the simplest plan is to bring your own approved infant carrier. It works in the taxi from the airport and in the rental car.
Who pays the fine
The driver. Swedish law makes the driver responsible for making sure every passenger under 15 uses a belt or child restraint. That includes a taxi driver. Failing to do so is fined 2,500 kr on the spot (ordningsbot). Passengers aged 15 or over answer for their own belt, with a 1,500 kr fine.
Medical exemptions exist but are narrow. Since 1 December 2025, only a time-limited Transportstyrelsen certificate, based on a specialist doctor’s certificate, exempts someone on strong medical grounds. A certificate from a competent authority in another EEA country counts the same. Carry it in the car.
Mistakes to avoid
- Going by age. The law measures height: 135 cm.
- Rear-facing seat, airbag on. Switch it off or move to the back.
- Assuming the rental comes with a seat. It’s an extra, and stock can run out.
- Booking an airport taxi for a baby without a seat. Bring your own carrier.
- Packing a non-ECE seat. Check the label first.
- Throwing out a good R44 seat. Using it is still legal.
- Thick winter jackets under the harness. The seat must fit the child, so take bulky coats off and put a blanket over the straps.
Practical information
| What | Detail |
|---|---|
| Child restraint required | Shorter than 135 cm |
| Accepted approvals | UN R129 (i-Size), ECE R44/03 or later, EU 77/541/EEC as amended |
| Rear-facing seat at an active airbag | Prohibited |
| Front seat with active airbag | Advised from 140 cm (guidance) |
| Rear-facing recommendation | At least 4–5 years, preferably longer (guidance) |
| Taxi exception | Under 3: occasional short ride, not in front |
| Short-trip exception | 3+ and under 135 cm: adult belt, not in front |
| Driver’s fine, unrestrained under-15 | 2,500 kr (checked 2026-09-24) |
| Belt fine, passenger 15+ | 1,500 kr (checked 2026-09-24) |
| Rental and taxi seat charges | Vary by company; check when booking |
FAQ
What are the car seat rules in Sweden?
Any child shorter than 135 cm must use a child seat, booster seat or booster cushion, instead of or together with the adult belt. The seat must be approved under ECE R44 (version 03 or later) or UN R129 (i-Size), and fitted as its manual says. A rear-facing seat may never sit in front of an active airbag. The driver is responsible and fined 2,500 kr.
Can a child sit in the front seat in Sweden?
Yes, if the seat position is right. The legal rule is that a rear-facing seat may not face an active frontal airbag. Switch the airbag off or use the back. Swedish transport agencies advise that a child should be at least 140 cm before sitting in front of an active airbag. That figure is official advice rather than law, but it is sound.
Do children need a car seat in a taxi in Sweden?
Usually yes. A child under three may ride without a seat only on an occasional short taxi trip, and never in the front. Children aged three or over and under 135 cm may use the adult belt on short occasional trips when no seat is available, again not in the front. Many taxi firms have built-in boosters and bookable rear-facing seats.
Can I use my American car seat in Sweden?
Generally not. Swedish rules accept only seats approved under ECE Regulation 44 (version 03 or later), UN Regulation 129 or the matching EU directive. A seat certified only to the US FMVSS 213 standard does not meet that requirement, so the driver risks a 2,500 kr fine. Check the label for an “E” in a circle, or rent an approved seat.
Are R44 car seats still legal in Sweden?
Yes. The sale of new R44 seats in the EU ended in September 2024, but Sweden’s regulation still approves seats to ECE R44-03 or later, so an R44/03 or R44/04 seat you already own remains legal to use. Only seats with the old Swedish “T” mark alone are banned. Newer R129 (i-Size) seats are also accepted.
How long should a child sit rear-facing in Sweden?
Sweden’s national recommendations say rear-facing until at least four or five years, preferably longer, which is longer than most countries advise. This is guidance, not law: the law requires only an approved restraint suited to the child. Some taxi companies, such as Taxi Stockholm, can supply a rear-facing seat if you book it.
Who gets fined if a child has no car seat?
The driver. Swedish law makes the driver responsible for making sure passengers under 15 use a belt or child restraint, and the on-the-spot fine is 2,500 kr. Passengers aged 15 or over answer for their own belt, with a 1,500 kr fine. In a taxi, the taxi driver carries the same duty as any other driver.
Related guides
- Driving in Sweden: every road rule a visitor needs, from headlights to the 0.2 per mille limit
- Renting a car in Sweden: what to check before you book the car the seat goes into
- Taxis in Sweden: how prices work and what to ask when you book
- Sweden with kids: planning the whole trip around children
- Sweden with a baby: carriers, prams and the practical stuff
Facts verified 2026-09-24. Sources: Sveriges Riksdag (the Road Traffic Ordinance), Transportstyrelsen (TSFS 2014:52, TSFS 2025:54 and its rules-and-tips page), Trafikverket, Åklagarmyndigheten, Taxi Stockholm, Avis — full register in this topic’s source file. Rental and taxi seat prices change and are never published here. Found something outdated? Tell us and we’ll fix it.