In short: Choose an infant car seat by your baby's height (i-Size), fit with your car and pushchair, and independent tests. Fit it rear-facing, never in front of an active airbag. There is no single legal time limit: Slovenia's public health institute advises up to 30 minutes in the first month, up to 60 minutes for older babies, with breaks.
Author: Eva Birsa, mum and co-founder of Evitas · Updated: 2 November 2026
How to choose an infant car seat
An infant car seat, or infant carrier, is a car seat for newborns and young babies with a carrying handle, always fitted rear-facing. For an overview of all seat types, see our guide How to choose a car seat.
- i-Size standard (UN R129): new seats in the EU are sold only under R129, which classifies children by height. The differences are explained in i-Size vs R44.
- Height and weight: most carriers go up to 83–87 cm and 13 kg, some to 75 cm. ADAC notes that if a carrier is approved only to 80 cm, the next seat should also fit rear-facing.
- Fit with your car: an i-Size carrier fits all seating positions marked i-Size. For other seats, check the manufacturer's vehicle list.
- Base or seat belt: an Isofix base stays in the car and reduces the risk of incorrect fitting; many carriers can also be fitted with the belt. ADAC advises buying the carrier and base together, because not every base fits every carrier.
- Pushchair compatibility: before buying, check whether your pushchair takes the carrier directly or needs a car seat adapter.
- Second-hand seats: The Lullaby Trust advises against them because you cannot know their history. A seat that has been in a crash must be replaced.
Infant car seats at Evitas: comparison
The data comes from the product descriptions. All models are in the 40–87 cm car seats collection.
| Model | Height / weight | Fitting | Feature | Carrier weight | ADAC |
|---|---|---|---|---|---|
| KikkaBoo i-Class | 40–87 cm | i-Class 360 base (ISOFIX, rotating) | R129/04, TÜV SÜD; 6 headrest positions, 3 recline positions | not stated | not in ADAC tests |
| KikkaBoo i-Prime | 40–87 cm | ISOFIX base (sold separately) | R129/03, TÜV SÜD; fits Lanah, Kara, Thea, Tiffany and Naya pushchairs | 3.9 kg | not in ADAC tests |
| Cybex Cloud G3 | 40–87 cm, up to 13 kg | Base G3 or Base G, or belt | R129/04; 180° turn towards the door, 14 headrest positions | 3.9 kg | 2.2 with Base G3, 2.3 without base (autumn 2026) |
| Nuna Pipa Next | 40–83 cm, up to 13 kg | base or belt | R129; magnetic Dream Drape curtain | 2.8 kg (without insert and canopy) | 1.6 with base, 2.0 without (2020, old method) |
| Nuna Pipa Urbn | 40–75 cm, up to 13 kg | built-in Isofix connectors, no base, or belt | R129/03; suits rental cars and taxis | 3.3 kg (without insert and canopy) | not in the autumn 2026 test |
ADAC changed its method in 2020 and 2025, so do not compare scores from different periods directly. We found no KikkaBoo scores in the ADAC database; ADAC tests only a selection of models each year, so this says nothing either way about safety.
ADAC autumn 2026: what it means for choosing a carrier
On 20 October 2026 ADAC published its test of 16 seats, with infant carriers at the top. The winner was the Maxi-Cosi Coral Slide Pro with base, which Evitas does not sell, just ahead of the Cybex Cloud G3 and Joie i-Gemm 3. Lower scores are better; all results are in our ADAC car seat test article.
| Carrier | With base | Without base (belt) |
|---|---|---|
| Maxi-Cosi Coral Slide Pro | 2.1 good | 3.0 satisfactory |
| Cybex Cloud G3 | 2.2 good | 2.3 good |
| Joie i-Gemm 3 | 2.2 good | 2.6 satisfactory |
| Britax Römer Baby-Safe Pro | 5.5 poor (Vario Base 5Z) | 3.1 satisfactory |
Source: ADAC and ÖAMTC, autumn 2026. The without-base scores are published by ÖAMTC.
Britax Römer Baby-Safe Pro recall: in a frontal crash in the reclined position on the Vario Base 5Z, the harness buckle opened. The manufacturer has announced a voluntary recall for carriers made between 26 December 2025 and 30 September 2026. Until it is resolved, ADAC advises using the carrier only upright or without the base, secured with the three-point belt. Evitas does not sell this model; the steps are in our ADAC car seat test article.
How to fit it correctly
- Rear-facing: R129 seats must be rear-facing until at least 15 months, and an infant carrier stays rear-facing throughout.
- Front seat and airbag: never fit a carrier in front of an active airbag. On the front passenger seat it is allowed only with the airbag switched off.
- Firm installation: follow the manufacturer's instructions and check the indicators on the base. The seat must sit firmly, with the belt through the marked guides.
- Harness: tighten it every time. If you can pinch a fold of strap at the shoulder, it is too loose (the AAP pinch test). Adjust the harness and headrest height as your baby grows.
- No thick coat: bulky clothing leaves the harness too loose. Buckle your baby in thin layers, then cover with a blanket. More in How to dress a baby in winter.
- Angle: your baby's chin must not drop to the chest, as this can block the airway. Follow the angle in the instructions.
- Supervision while driving: The Lullaby Trust suggests a second adult in the back, or otherwise a mirror.
Rules vary by country in the height limit and in details, but across Europe a rear-facing seat in front is allowed only with the airbag off. See the country table in i-Size vs R44.
How long can a baby stay in an infant car seat?
There is no single legal limit. The often-quoted "2-hour" and "30-minute" rules are not international regulations but recommendations from individual institutions and manufacturers. The numbers differ, but the sources agree on the essentials: keep journeys with young babies as short as possible and take regular breaks.
| Source | What it says |
|---|---|
| NIJZ (Slovenian public health institute) | Newborn in the first month up to 30 minutes, older baby up to 60 minutes; stop several times on longer trips. |
| The Lullaby Trust (UK) | No number: babies should not sleep in car seats for long periods; take regular breaks on long drives and take baby out of the seat. |
| East Lancashire Hospitals NHS Trust | No longer than 2 hours at a time, breaks at least every 2 hours. This is one hospital's advice, not a national rule. |
| AAP (US) | No hour limit; a break every 2–3 hours by day and every 4–6 hours at night. |
| Maxi-Cosi (manufacturer) | General advice of up to 2 hours; some local guidance for newborns mentions 30 minutes, and there is no single NHS limit. |
| ADAC | No limit for carriers; avoid long drives with a newborn, and with children plan a break about every 90 minutes. |
The 30-minute figure comes mainly from a pilot study by the universities of Bristol and Southampton (Archives of Disease in Childhood – Fetal & Neonatal Edition). In 40 babies (median age 13 days), at a 40° angle with simulated car vibration, researchers measured faster heart and breathing rates and lower oxygen saturation after about 30 minutes. The authors say the clinical significance is unclear and a larger study is needed.
How to use this in practice (our summary, not a regulation):
- Newborn in the first month: keep trips as short as possible, up to 30 minutes per NIJZ.
- Older baby: up to 60 minutes per NIJZ where possible.
- Longer trips: a break at least every 2 hours, sooner for younger babies. Take your baby out of the seat to stretch, feed or change.
- Check head position and breathing during the drive; if the head drops forward, stop in a safe place.
- For premature babies or babies with health conditions, talk to your paediatrician before travelling.
An infant car seat is not for sleeping at home
If your baby falls asleep on the drive, that is fine. When you arrive, move them to a firm, flat surface such as a cot. The Lullaby Trust and NIJZ are clear: car seats are for travelling, not sleeping, and a carrier should not replace a cot. As the AAP puts it: "Car seats are for traveling, cribs are for sleeping."
The reason is position: a newborn cannot yet hold up their head well and may breathe less easily when semi-upright. The AAP also warns that too much time in the seat outside the car can contribute to flat head, breathing concerns and tight neck muscles. Short use, for example from the car to the clinic, is fine.
Some carriers have a lie-flat position or recline almost flat on a pushchair, but that does not change the rule: at home, sleep belongs on a flat surface.
When to move to the next seat
Age is not the measure; your child's size is. There is no need to move up early.
| Sign | What it means |
|---|---|
| Top of the head reaches the top of the shell | Time to change (ADAC, NIJZ). |
| Child reaches the height or weight on the label | Time to change, even if the carrier still looks big enough. |
| Feet touch the car seat backrest | Not a problem and no reason to change (ADAC). |
| The carrier has been in a crash | Replace it (NIJZ). |
The next seat should again be rear-facing; Rear-facing car seats until age 4 explains why. You will find options among 40–105 cm car seats, and at Cybex the Cloud G3 and Sirona G3 set with base uses one base for both. See the full range in car seats.
Frequently asked questions
Is the 2-hour car seat rule real?
It is not a law. Some institutions and manufacturers give two hours as a limit; The Lullaby Trust and the AAP do not set one. Slovenia's NIJZ advises shorter trips: up to 30 minutes in the first month and up to 60 minutes for older babies.
Can an infant car seat go on the front seat?
Only with the passenger airbag switched off, following the car manufacturer's instructions. If it cannot be switched off, fit the seat in the back.
Can a baby sleep in an infant car seat?
On the drive, yes; at home, no. When you arrive, move your baby to a firm, flat surface.
How long is an infant car seat used for?
Until your child reaches the height or weight on the seat, or the top of the head reaches the shell. For carriers up to 87 cm this is often around 15 months or later.
Is an infant car seat better with a base?
A base makes daily use easier, but the score depends on the combination. In ADAC's autumn 2026 test the Cybex Cloud G3 scored 2.2 with base and 2.3 with belt, and the Maxi-Cosi Coral Slide Pro 2.1 with base and 3.0 without.
Can my baby wear a winter coat in the car seat?
No. A thick coat leaves the harness too loose. Buckle your baby in thin layers and put a blanket over the harness.
Sources
- ADAC – Kindersitztest Herbst 2026
- ADAC – press release, 20 October 2026
- ÖAMTC – Kindersitztest 2026 Herbst
- Britax Römer – Baby-Safe Pro safety notice
- ADAC – infant carrier buying advice
- ADAC – travelling with children
- The Lullaby Trust – Car seats
- NIJZ (Slovenia) – Otrok v avtomobilu
- East Lancashire Hospitals NHS Trust – Keeping your baby safe
- AAP – Is it safe for my baby to travel in a car seat for hours at a time?
- AAP – Are you using your rear-facing-only car seat safely?
- AAP – Winter car seat safety tips
- Maxi-Cosi – Safe travel tips
- Arya et al. – pilot study in a simulated moving vehicle (Arch Dis Child Fetal Neonatal Ed)
This content is for information only and does not replace the advice of a paediatrician or official regulations. Always follow the car seat and vehicle manufacturers' instructions.
