Car Seat Laws in Belgium: What Every Family Needs to Know
Updated: Aug 25
Belgian child restraint law applies identically whether you're navigating Brussels' Grand Place traffic, driving the E40 toward Ghent, or catching taxis around Bruges — and it sets its height threshold lower than several neighbouring countries, a detail that catches some visiting families off guard. Whether you're flying into Brussels Airport (Zaventem), hiring a car for the Ardennes, or relying on taxis between cities, knowing exactly where the rule applies and where it doesn't shapes how you should plan transport for your kids.
The Legal Requirement
Belgium's child restraint rules are set out in Articles 35 and 44 of the Code de la route / Wegcode (Belgian Highway Code). Under these provisions, any child under 135 cm in height must be secured in an approved child restraint system, regardless of age. This applies to both front and rear seats in private vehicles and rental cars. Belgium's 135 cm threshold is notably lower than the 150 cm used in several neighbouring countries, including France and Germany — a detail worth knowing if you're driving across borders during your trip.
The seat type required follows the child's weight. Infants up to 13 kg travel rear-facing. Children from 13 to 18 kg use forward-facing seats. Children from 18 to 36 kg use a booster with the vehicle's standard seatbelt. Belgian law is particularly strict for the youngest children: a child under 3 years old may never travel in a private vehicle without a proper car seat — there is no fallback exception for this age group, even in tight carpooling situations with multiple children. Rear-facing seats must never be used in the front seat with an active airbag. All seats must meet ECE R44/03, R44/04, or i-Size (R129) standards; since 1 September 2024, only R129-compliant seats may be newly sold across the EU, though existing approved R44 seats remain legal to use. For official guidance, see Brussels-Capital Region – Safely transporting a child and the Wegcode / Code de la route official traffic rules portal.
How It Applies to Taxis
Belgian taxis are not required to carry a child restraint, but this is an exception rather than a conditional exemption, and it comes with conditions. Under Article 35 of the Code de la Route / Wegcode, children under 18 and shorter than 135 cm must normally use a suitable child restraint.
Where a taxi has no suitable restraint fitted, a child under 135 cm must travel in the rear and must wear the ordinary seatbelt. A restraint remains required for a child under 135 cm in the front seat, and Belgian road-safety guidance is that children under 3 should still travel in a suitable seat, including in a taxi.
Within that exemption, one condition still applies: a child over 3 years old and under 135 cm may use the adult seatbelt in the rear seat of a taxi, but cannot sit in the front with only a seatbelt — a restraint or the rear seat is required for the front-seat scenario. This is a more specific rule than a simple conditional exemption, and it's worth knowing precisely rather than assuming a child can sit anywhere in a taxi without restriction.
Standard taxis in Brussels and other Belgian cities do not carry child seats as routine equipment, and the exemption means there's no legal pressure prompting them to. For an airport transfer from Zaventem into central Brussels, or any journey of meaningful distance, many families pre-book a transfer with a fitted seat rather than relying on the exemption — particularly for infants and toddlers, where the physical risk of an unrestrained ride doesn't disappear just because the law permits it.
How It Applies to Rental Cars
The taxi exemption does not extend to rental cars. Full compliance with Articles 35 and 44 of the Code de la route is mandatory from the moment you collect the vehicle at Brussels Airport or any other Belgian location. As the driver or the person renting the vehicle, you bear responsibility for fitting the correct restraint — Belgian rental guidance is explicit that this duty falls on the parent, guardian, or renter, not the rental company.
Major rental companies across Belgium offer child seats as an add-on, but availability tightens during the summer peak and around major Belgian and EU holiday periods, given Brussels's role as a hub for both tourism and EU institutional travel. Always confirm the seat in writing at booking, specify your child's weight category, and check the seat is correctly fitted before driving away — you, not the rental company, are responsible for the installation. For infants, bringing your own seat from home removes this uncertainty for a longer Ardennes road trip.
Fines and Penalties
Failing to correctly secure a child under 135 cm in a private or rental vehicle is classified as a third-degree offence under Belgian traffic law — the same category as overtaking violations and failing to stop at a red light. The fine is €174, confirmed directly by the Brussels-Capital Region's official guidance. Belgian police can issue this fine on the spot, including to foreign visitors, with an immediate payment deposit also set at €174.
For current official fine details, refer to Brussels-Capital Region – Safely transporting a child or the Wegcode official traffic rules portal.
Quick Reference
• Under 135 cm → child restraint system required in private and rental cars, regardless of age
• 135 cm or taller → standard adult seatbelt is sufficient
• Under 3 years old → must always be in a proper car seat; no exceptions in a private vehicle, even with multiple children
• Taxis, buses, coaches, vehicles with 8+ seats → conditional exemption; over-3s may use the rear seatbelt but cannot sit in the front without a restraint
• Rental cars → no exemption; full requirement applies, with fitting responsibility on the renter
• Infants (up to 13 kg) → rear-facing seat
• Toddlers (13–18 kg) → forward-facing seat
• Older children (18–36 kg, under 135 cm) → booster with standard seatbelt
• Fine for non-compliance → €174 (third-degree offence)
• Accepted standards → ECE R44/03, R44/04, or i-Size (R129)
FAQ
• Do I need a car seat for my child in a Belgian taxi?
Legally, no. Belgian taxis have a conditional exemption from the child restraint requirement, the same exemption that covers buses and coaches. A child under 135 cm may travel without a seat in a taxi. One condition still applies: a child over 3 can use the rear seatbelt, but cannot sit in the front of the taxi without a proper restraint
• Why is Belgium's height limit different from neighbouring countries?
Belgium sets its threshold at 135 cm, while France and Germany use 150 cm. All three follow the same EU directive framework, but Belgium applies a stricter, lower limit. If you're driving across borders during a Benelux trip, this is worth knowing so you don't assume the same rule applies everywhere.
• Is there an exception for very young children in Belgium?
Yes, and it's stricter rather than looser: children under 3 years old must always be in a proper car seat in a private vehicle — there is no fallback exception, even in occasional carpooling situations with multiple children where space is tight. The only place this relaxes is specifically within the taxi exemption.
• What's the fine for not having a car seat in a Belgian rental car?
The fine is €174, classified as a third-degree offence under Belgian traffic law — confirmed directly by the Brussels-Capital Region's official guidance. Belgian police can issue this fine on the spot, including to visiting drivers.
• Can I book a taxi with a child seat for a Brussels Airport transfer?
Yes. Taxibambino.com lets you specify the seat type — infant, forward-facing, or booster — when booking your transfer from Brussels Airport (Zaventem) or anywhere in Belgium. The seat is confirmed and fitted before pickup, which matters specifically because standard Belgian taxis have no legal obligation to provide one.
This page is reviewed and updated regularly. For the most current official rules, always check your destination country's government transport authority.
What our own booking data shows: across 139 bookings made through TaxiBambino in Belgium in the twelve months to August 2026, the middle half of families paid roughly €75–€106, with a median near €87. Party size is the part most families underestimate: 32% of those bookings were for four or more passengers and 14% for five or more — the point at which a standard sedan stops working once car seats, a stroller and luggage are added.
December was the busiest travel month, and families booked around five days ahead on average. Prices move with demand, season and the specific route, so treat these as historical ranges rather than a quote; vehicles are supplied by TaxiBambino and our partner network.
Official source: Belgian Police – Kinderzitjes in de auto.
Last updated: August 2026. Reviewed by Lija Scheiman, CEO, TaxiBambino Content Audit Team.
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