What are the most compact 3-in-1 car seats with booster mode for small cars?
This page compares 3 3-in-1 car seats with verified specifications and prices. Top options include Chicco Fit3x ClearTex All-in-One Car Seat, Diono Radian 3RXT SafePlus 3-in-1 Convertible Car Seat, Graco True3Fit LX 3-in-1 Car Seat. Prices range from £170 to £259. All data is sourced from manufacturer documentation and specialist retailers.
| Product ⇅ | Price ⇅ | Weight (lbs) ⇅ | Height Limit (inches) ⇅ | Weight Limit (pounds) ⇅ | Seat Width (inches) ⇅ | Booster Backrest Height (inches) ⇅ | Harness System ⇅ |
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Chicco Fit3x ClearTex All-in-One Car Seat
US
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£169.88 ≈ | 21.0 | 57 in | 100 lbs | 16.7 in | 20 in | 12-position no-rethread harness |
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The Chicco Fit3x ClearTex is a slim all-in-one car seat measuring 16.7 in wide and weighing 21 lbs. It supports rear-facing, forward-facing, and high-back booster use for children from 5 to 100 lbs, with ClearTex fabric, six recline positions, and fold-in CupFolders. ★ Ideal forIt suits small cars because its 16.7 in ultra-slim width is designed for three-across seating, while its high-back booster mode accommodates children 40-100 lbs and 44-57 in tall. |
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Diono Radian 3RXT SafePlus 3-in-1 Convertible Car Seat
US
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£258.51 ≈ | 30.6 | 57.1 | 120 | 17 | — | 5-point harness |
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The Diono Radian 3RXT SafePlus is an all-in-one car seat that supports rear-facing, forward-facing harness, and high-back booster use from 4 to 120 lb. Its 17 in slim-fit design is made for fitting three car seats across, while SafePlus side-impact protection, an anti-rebound bar, and a 12-position headrest support growing children. ★ Ideal forIt suits small cars because its 17 in slim-fit width is designed for three-across installation, while its 4-120 lb range and high-back booster mode allow one seat to serve from infancy through the booster years. |
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Graco True3Fit LX 3-in-1 Car Seat
US
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£206.08 ≈ | — | 49 or less; 43-57 in booster mode | 5-40 rear-facing; 26.5-65 forward-facing; 40-100 booster | 16.5 | — | No-rethread 5-point harness |
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The Graco True3Fit LX is a 3-in-1 seat that supports rear-facing, forward-facing, and highback booster use. It has a slim 16.5-inch width, a forward-facing belt lock-off, an anti-rebound bar, and a no-rethread harness, making it suitable for growing children and three-across installations. ★ Ideal forIts 16.5-inch width and highback booster mode from 40-100 lb make it a strong option for small cars and families needing a compact 3-in-1 seat.
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