{ "schema_version": "compare-page.v2", "page_id": "infant-car-seats-that-can-be-installed-without-their-base-f54ad62b", "url": "https://robotrunk.com/compare/want/infant-car-seats-that-can-be-installed-without-their-base-f54ad62b", "title": "Infant car seats that can be installed without their base", "question": "Which infant car seats can be installed in a vehicle without their base?", "answer": "Peg Perego Primo Viaggio Urban Mobility: It is a baseless infant car seat that can be installed without a base using built-in LATCH connectors or the Euro belt path method. In crash testing the seat did not keep its structural integrity in any of the four rear-facing runs; there was significant cracking around the seatpan and along the internal seams of the seatback, and in one run with a weighted 12-month dummy on lower anchors parts of the shell came away and the crotch buckle area pulled through, which the testers say raises concern for injury risk in a later crash.\nBritax Willow S: There is an extra belt path on the back of the seat for base-free installation.\nBugaboo Turtle Air Shield by Nuna: Shows the carrier being installed without the base using the vehicle belt (European-style belt routing), which the video presents as the way to use it in a taxi, rideshare or on holiday.\nBritax B-Safe Gen2: Britax publishes a B-Safe Gen2 user guide plus installation videos for lower anchors, vehicle seat belt, and installing without the base.", "kind": "car seat", "market": "US", "generated_at": "2026-10-30T20:11:36.372Z", "columns": [ "Base-free install", "Limits", "Safety testing" ], "notices": { "facts": "Every value in the table is a fact RoboTrunk checked, linked to the page it came from. A dash means no checked fact fills that cell.", "price": "Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live." }, "cited_facts": [ { "ref": "p4.f3", "product": "Britax B-Safe Gen2", "field": "support", "value": "Britax publishes a B-Safe Gen2 user guide plus installation videos for lower anchors, vehicle seat belt, and installing without the base.", "stated_as": "B-Safe Gen2 Infant Car Seat\nB-Safe Gen2 User Guide\nVideo - How to Install with Lower Anchors", "source_type": "guide", "source_url": "https://www.britax.ca/retired-products", "source_read_at": "2026-10-17T21:31:30.005Z" }, { "ref": "p4.f4", "product": "Britax B-Safe Gen2", "field": "child limits", "value": "It is for rear-facing use only with children from 4 to 35 lb (1.8 to 15.8 kg) who are 32 inches (81.3 cm) tall or less.", "stated_as": "Use only with children who weigh between 4 and\n 35 pounds (1.8 and 15.8 kg) and whose height is\n 32 inches (81.3 cm) or less.", "source_type": "manual", "source_url": "https://csus.britax.com/media/13024798/p12971400_user-guide_b-safe-gen2_us-web-1.pdf", "source_read_at": "2026-10-17T21:31:36.204Z" }, { "ref": "p4.f7", "product": "Britax B-Safe Gen2", "field": "lab scores", "value": "In Consumer Reports' lab tests the seat scored 5 of 5 for ease of use, 5 of 5 for fit-to-vehicle with LATCH, 5 of 5 with the vehicle belt and 4 of 5 carrier-only, with crash protection rated Better and an overall score of 74.", "stated_as": "In Consumer Reports' lab tests the seat scored 5 of 5 for ease of use, 5 of 5 for fit-to-vehicle with LATCH, 5 of 5 with the vehicle belt and 4 of 5 carrier-only, with crash protection rated Better and an overall score of 74.", "source_type": "review", "source_url": "https://www.consumerreports.org/babies-kids/car-seats/britax-b-safe-gen2/m406590/", "source_read_at": "2026-10-17T21:31:46.963Z" }, { "ref": "p6.f1", "product": "Peg Perego Primo Viaggio Urban Mobility (Primo Viaggio 4-35 Urban Mobility)", "field": "what it is", "value": "It is a baseless infant car seat that can be installed without a base using built-in LATCH connectors or the Euro belt path method.", "stated_as": "Equipped with built-in LATCH technology, the Primo Viaggio Urban Mobility Infant Car Seat by Peg Perego can be installed without a base using either the built-in latch connectors or the Euro belt path method.", "source_type": "listing", "source_url": "https://modern-nursery-test-store.myshopify.com/products.json", "source_read_at": "2026-10-21T19:31:31.510Z" }, { "ref": "p6.f5", "product": "Peg Perego Primo Viaggio Urban Mobility (Primo Viaggio 4-35 Urban Mobility)", "field": "crash test", "value": "In crash testing the seat did not keep its structural integrity in any of the four rear-facing runs; there was significant cracking around the seatpan and along the internal seams of the seatback, and in one run with a weighted 12-month dummy on lower anchors parts of the shell came away and the crotch buckle area pulled through, which the testers say raises concern for injury risk in a later crash.", "stated_as": "In crash testing the seat did not keep its structural integrity in any of the four rear-facing runs; there was significant cracking around the seatpan and along the internal seams of the seatback, and in one run with a weighted 12-month dummy on lower anchors parts of the shell came away and the crotch buckle area pulled through, which the testers say raises concern for injury risk in a later crash.", "source_type": "review", "source_url": "https://www.consumerreports.org/babies-kids/car-seats/peg-perego-primo-viaggio-urban-mobility/m419414/", "source_read_at": "2026-10-22T12:56:11.527Z" }, { "ref": "p6.f10", "product": "Peg Perego Primo Viaggio Urban Mobility (Primo Viaggio 4-35 Urban Mobility)", "field": "weight limit with vehicle belt, no base", "value": "With a vehicle belt and no base, the manual limits use to 4-22 lbs.", "stated_as": "Weight limits: 4 - 22 lbs (1,8 - 10 kg)", "source_type": "manual", "source_url": "https://www.pegperego.com/media/catalog/product/download/PRIMO-VIAGGIO-4-35-URBAN-MOBILITY-FIUS2401I356-EN-USA.pdf", "source_read_at": "2026-10-22T12:56:08.328Z" }, { "ref": "p8.f2", "product": "Britax Willow S", "field": "base-free installation", "value": "There is an extra belt path on the back of the seat for base-free installation.", "stated_as": "Extra belt path on the back of the seat for security when installing without the base.", "source_type": "guide", "source_url": "https://us.britax.com/shop/car-seats/willow-s-clicktight-infant-car-seat", "source_read_at": "2026-10-18T00:02:45.783Z" }, { "ref": "p8.f4", "product": "Britax Willow S", "field": "safety test", "value": "NHTSA's ease-of-use ratings list Britax Willow S model E1C993XDI, made 2024-07-08, rear-facing, at overall 4 of 5 stars and securing the child 3 of 5; these rate ease of use, not crash protection (https://api.nhtsa.gov/childSeats?dataSet=ratings).", "stated_as": "Britax Willow S (model number E1C993XDI, Infant, the rated seat made 2024-07-08, child weight 4.0lbs - 30.0lbs, child height Up to 32.0\"): Rear-facing (seat weight in this mode 20.7 lb): overall 4 of 5 stars; securing the child 3 of 5 stars", "source_type": "guide", "source_url": "https://api.nhtsa.gov/childSeats?dataSet=ratings", "source_read_at": "2026-10-18T00:03:02.545Z" }, { "ref": "p8.f5", "product": "Britax Willow S", "field": "weight range", "value": "The seat is rear-facing only and rated for babies from 4 to 30 lb.", "stated_as": "Infant car seat, rear-facing only; 4 to 30 lbs.", "source_type": "listing", "source_url": "https://top-stroll.myshopify.com/products.json", "source_read_at": "2026-10-17T19:35:52.669Z" }, { "ref": "p9.f1", "product": "Bugaboo Turtle Air Shield by Nuna (product code 400016001 / 400016MI, GTIN 8717447206842)", "field": "base-free use", "value": "Shows the carrier being installed without the base using the vehicle belt (European-style belt routing), which the video presents as the way to use it in a taxi, rideshare or on holiday.", "stated_as": "Shows the carrier being installed without the base using the vehicle belt (European-style belt routing), which the video presents as the way to use it in a taxi, rideshare or on holiday.", "source_type": "review", "source_url": "https://www.youtube.com/watch?v=H0kRaFKnmXY", "source_read_at": "2026-10-21T15:29:43.512Z" }, { "ref": "p9.f11", "product": "Bugaboo Turtle Air Shield by Nuna (product code 400016001 / 400016MI, GTIN 8717447206842)", "field": "age and size limits", "value": "It is an infant seat for children from birth at 4 lbs up to about 15 months, with a maximum of 30 lbs and 30 inches.", "stated_as": "Suitable from birth (4 lbs) until 15 months (max. 30 lbs and 30 inches)", "source_type": "guide", "source_url": "https://www.bugaboo.com/us-en/car-seat/bugaboo-turtle-air-shield-by-nuna-car-seat-400016MI.html?ibx_source=d4n764ksqbas73fcddng&pid=400016MI&ueh=e97eb937a481d2b437a1a581b653b655e5c1e1a3b684301236337159febd7b1d", "source_read_at": "2026-10-21T15:28:10.858Z" } ], "rows": [ { "rank": 1, "merchant": { "slug": "modernnursery-com", "display_name": "modernnursery.com" }, "product_id": "gid://shopify/Product/7414908289124", "name": "Peg Perego Primo Viaggio Urban Mobility (Primo Viaggio 4-35 Urban Mobility)", "url": "/products/ucp/modernnursery-com/7414908289124", "why": "It is a baseless infant car seat that can be installed without a base using built-in LATCH connectors or the Euro belt path method.", "cells": [ { "column": "Base-free install", "fact": { "field": "what it is", "value": "It is a baseless infant car seat that can be installed without a base using built-in LATCH connectors or the Euro belt path method.", "stated_as": "Equipped with built-in LATCH technology, the Primo Viaggio Urban Mobility Infant Car Seat by Peg Perego can be installed without a base using either the built-in latch connectors or the Euro belt path method.", "source_type": "listing", "source_url": "https://modern-nursery-test-store.myshopify.com/products.json", "source_read_at": "2026-10-21T19:31:31.510Z" } }, { "column": "Limits", "fact": { "field": "weight limit with vehicle belt, no base", "value": "With a vehicle belt and no base, the manual limits use to 4-22 lbs.", "stated_as": "Weight limits: 4 - 22 lbs (1,8 - 10 kg)", "source_type": "manual", "source_url": "https://www.pegperego.com/media/catalog/product/download/PRIMO-VIAGGIO-4-35-URBAN-MOBILITY-FIUS2401I356-EN-USA.pdf", "source_read_at": "2026-10-22T12:56:08.328Z" } }, { "column": "Safety testing", "fact": { "field": "crash test", "value": "In crash testing the seat did not keep its structural integrity in any of the four rear-facing runs; there was significant cracking around the seatpan and along the internal seams of the seatback, and in one run with a weighted 12-month dummy on lower anchors parts of the shell came away and the crotch buckle area pulled through, which the testers say raises concern for injury risk in a later crash.", "stated_as": "In crash testing the seat did not keep its structural integrity in any of the four rear-facing runs; there was significant cracking around the seatpan and along the internal seams of the seatback, and in one run with a weighted 12-month dummy on lower anchors parts of the shell came away and the crotch buckle area pulled through, which the testers say raises concern for injury risk in a later crash.", "source_type": "review", "source_url": "https://www.consumerreports.org/babies-kids/car-seats/peg-perego-primo-viaggio-urban-mobility/m419414/", "source_read_at": "2026-10-22T12:56:11.527Z" } } ] }, { "rank": 2, "merchant": { "slug": "megababiesusa-com", "display_name": "megababiesusa.com" }, "product_id": "gid://shopify/Product/8073053044990", "name": "Britax Willow S", "url": "/products/ucp/megababiesusa-com/8073053044990", "why": "There is an extra belt path on the back of the seat for base-free installation.", "cells": [ { "column": "Base-free install", "fact": { "field": "base-free installation", "value": "There is an extra belt path on the back of the seat for base-free installation.", "stated_as": "Extra belt path on the back of the seat for security when installing without the base.", "source_type": "guide", "source_url": "https://us.britax.com/shop/car-seats/willow-s-clicktight-infant-car-seat", "source_read_at": "2026-10-18T00:02:45.783Z" } }, { "column": "Limits", "fact": { "field": "weight range", "value": "The seat is rear-facing only and rated for babies from 4 to 30 lb.", "stated_as": "Infant car seat, rear-facing only; 4 to 30 lbs.", "source_type": "listing", "source_url": "https://top-stroll.myshopify.com/products.json", "source_read_at": "2026-10-17T19:35:52.669Z" } }, { "column": "Safety testing", "fact": { "field": "safety test", "value": "NHTSA's ease-of-use ratings list Britax Willow S model E1C993XDI, made 2024-07-08, rear-facing, at overall 4 of 5 stars and securing the child 3 of 5; these rate ease of use, not crash protection (https://api.nhtsa.gov/childSeats?dataSet=ratings).", "stated_as": "Britax Willow S (model number E1C993XDI, Infant, the rated seat made 2024-07-08, child weight 4.0lbs - 30.0lbs, child height Up to 32.0\"): Rear-facing (seat weight in this mode 20.7 lb): overall 4 of 5 stars; securing the child 3 of 5 stars", "source_type": "guide", "source_url": "https://api.nhtsa.gov/childSeats?dataSet=ratings", "source_read_at": "2026-10-18T00:03:02.545Z" } } ] }, { "rank": 3, "merchant": { "slug": "modernnursery-com", "display_name": "modernnursery.com" }, "product_id": "gid://shopify/Product/14660174774638", "name": "Bugaboo Turtle Air Shield by Nuna (product code 400016001 / 400016MI, GTIN 8717447206842)", "url": "/products/ucp/modernnursery-com/14660174774638", "why": "Shows the carrier being installed without the base using the vehicle belt (European-style belt routing), which the video presents as the way to use it in a taxi, rideshare or on holiday.", "cells": [ { "column": "Base-free install", "fact": { "field": "base-free use", "value": "Shows the carrier being installed without the base using the vehicle belt (European-style belt routing), which the video presents as the way to use it in a taxi, rideshare or on holiday.", "stated_as": "Shows the carrier being installed without the base using the vehicle belt (European-style belt routing), which the video presents as the way to use it in a taxi, rideshare or on holiday.", "source_type": "review", "source_url": "https://www.youtube.com/watch?v=H0kRaFKnmXY", "source_read_at": "2026-10-21T15:29:43.512Z" } }, { "column": "Limits", "fact": { "field": "age and size limits", "value": "It is an infant seat for children from birth at 4 lbs up to about 15 months, with a maximum of 30 lbs and 30 inches.", "stated_as": "Suitable from birth (4 lbs) until 15 months (max. 30 lbs and 30 inches)", "source_type": "guide", "source_url": "https://www.bugaboo.com/us-en/car-seat/bugaboo-turtle-air-shield-by-nuna-car-seat-400016MI.html?ibx_source=d4n764ksqbas73fcddng&pid=400016MI&ueh=e97eb937a481d2b437a1a581b653b655e5c1e1a3b684301236337159febd7b1d", "source_read_at": "2026-10-21T15:28:10.858Z" } }, { "column": "Safety testing", "fact": null } ] }, { "rank": 4, "merchant": { "slug": "megababiesusa-com", "display_name": "megababiesusa.com" }, "product_id": "gid://shopify/Product/7920205791486", "name": "Britax B-Safe Gen2", "url": "/products/ucp/megababiesusa-com/7920205791486", "why": "Britax publishes a B-Safe Gen2 user guide plus installation videos for lower anchors, vehicle seat belt, and installing without the base.", "cells": [ { "column": "Base-free install", "fact": { "field": "support", "value": "Britax publishes a B-Safe Gen2 user guide plus installation videos for lower anchors, vehicle seat belt, and installing without the base.", "stated_as": "B-Safe Gen2 Infant Car Seat\nB-Safe Gen2 User Guide\nVideo - How to Install with Lower Anchors", "source_type": "guide", "source_url": "https://www.britax.ca/retired-products", "source_read_at": "2026-10-17T21:31:30.005Z" } }, { "column": "Limits", "fact": { "field": "child limits", "value": "It is for rear-facing use only with children from 4 to 35 lb (1.8 to 15.8 kg) who are 32 inches (81.3 cm) tall or less.", "stated_as": "Use only with children who weigh between 4 and\n 35 pounds (1.8 and 15.8 kg) and whose height is\n 32 inches (81.3 cm) or less.", "source_type": "manual", "source_url": "https://csus.britax.com/media/13024798/p12971400_user-guide_b-safe-gen2_us-web-1.pdf", "source_read_at": "2026-10-17T21:31:36.204Z" } }, { "column": "Safety testing", "fact": { "field": "lab scores", "value": "In Consumer Reports' lab tests the seat scored 5 of 5 for ease of use, 5 of 5 for fit-to-vehicle with LATCH, 5 of 5 with the vehicle belt and 4 of 5 carrier-only, with crash protection rated Better and an overall score of 74.", "stated_as": "In Consumer Reports' lab tests the seat scored 5 of 5 for ease of use, 5 of 5 for fit-to-vehicle with LATCH, 5 of 5 with the vehicle belt and 4 of 5 carrier-only, with crash protection rated Better and an overall score of 74.", "source_type": "review", "source_url": "https://www.consumerreports.org/babies-kids/car-seats/britax-b-safe-gen2/m406590/", "source_read_at": "2026-10-17T21:31:46.963Z" } } ], "recall": { "status": "found", "edition": 1, "index_read_at": "2026-09-25T21:56:43.040Z", "notices_fetched_at": "2026-09-25T15:02:47.095Z", "meaning": "This listing is the brand and model a regulator's notice names. Two AI models judged it so independently. It does not mean the unit on sale is from an affected batch, that the store knew, or that the product is illegal where the store sells it; a US recall does not bind an Australian store. The notice may cover only some serial numbers or dates of manufacture, which a listing does not show. RoboTrunk never limits or blocks a purchase over a notice; read the notice and decide.", "notices": [ { "key": "health-canada:82565", "regulator": "health-canada", "regulator_label": "Health Canada and Transport Canada", "id": "82565", "title": "Transport Canada Recall - 2026399 - BRITAX", "date": "2026-08-18", "url": "https://recalls-rappels.canada.ca/en/alert-recall/transport-canada-recall-2026399-britax", "kind": "recall", "batch_limited": true, "needs_testing": false } ] } } ] }