Maxi-Cosi · High-back booster

Maxi-Cosi Tanza i-Size

Based on 1 independent scored test: ADAC (2025).

Tested for Europe & UK

Shortlist score

Fair

#280 of car seats for Europe & UK

Single test

Where to buy

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Test results

Each score as the tester published it, converted to our 0–100 scale. Weight is how much the result counts towards the score.

ADAC DE · Lab test

ADAC Kindersitztest Herbst 2025

3.2

befriedigend

Our scale46

weight 1.00

Safety: 3.4
Handling: 2.8
Ergonomics: 1.5
Harmful substances: 1.0
Environmental substances: 1.0

Listed at €100 Zulassung: i-Size, Körpergröße von 100 cm bis 150 cm; Sitzerhöher mit Rückenlehne für Kinder von 100-150 cm (ca. 4 bis 12 Jahre); Sitzgewicht: 5,5 kg | ADAC age class: Kind | direction: Vorwärtsgerichtet | Isofix: Ja | mounting: In Fahrtrichtung mit 3-Punkt-Fahrzeuggurt, optional zusätzlich mit Isofix (nur in freigegebenen Fahrzeugen) | 2025+ protocol: separate "Umweltschadstoffe" sub-grade recorded as environmental_substances | Test vom Oktober 2025

View on adac.de ↗

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How we turn these into one number: methodology. Tested in 2025.