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two pieces and needs a firm push until it clicks together — more force than the reviewer expected.","locators":{"page":"https://csftl.org/nuna-aace-review/"}},{"id":"01M5H2M9HHYCXF5FGR2NZZ75BB","source_id":"modernnursery-com--nuna-aace-booster-seat:quick:source:5:review","kind":"review","text":"The pop-out pods should only be extended on the side next to a vehicle door, not when the seat is in a centre position; the reviewer said the manual was unclear and Nuna confirmed this.","locators":{"page":"https://csftl.org/nuna-aace-review/"}},{"id":"01M5H2M9VXPPTTTEFT4QNBMYRK","source_id":"modernnursery-com--nuna-aace-booster-seat:quick:source:5:review","kind":"review","text":"The cup holder, lower anchor guides and shoulder belt adjuster come together in a small starter kit box rather than being attached to the 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lowest head-injury and chest sensor readings in its booster group, which the testers read as a possible extra margin of protection over average seats; the pop-out side pods were noted but not judged in a real crash.","locators":{"page":"https://www.babygearlab.com/reviews/vehicle-safety/booster-seat/nuna-aace"}},{"id":"01M5H2MB9DJG0SEGKV80BAEV7R","source_id":"modernnursery-com--nuna-aace-booster-seat:quick:source:6:review","kind":"review","text":"The rigid LATCH connectors press straight onto the vehicle anchors easily, keep the seat from sliding around when empty, and the supplied LATCH guides are usually unnecessary.","locators":{"page":"https://www.babygearlab.com/reviews/vehicle-safety/booster-seat/nuna-aace"}},{"id":"01M5H2MBM3BVTRYMG8PY2NX2ES","source_id":"modernnursery-com--nuna-aace-booster-seat:quick:source:6:review","kind":"review","text":"The headrest lever is easy to squeeze and the headrest moves smoothly, but the headrest has to be raised out of the way to thread the 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made.","locators":{"page":"https://www.babygearlab.com/reviews/vehicle-safety/booster-seat/nuna-aace"}},{"id":"01M5H2MDBHGCTHZ8HHYFT3HZKA","source_id":"modernnursery-com--nuna-aace-booster-seat:quick:source:6:review","kind":"review","text":"A lip moulded into the back of the headrest makes the seat easier to carry between cars.","locators":{"page":"https://www.babygearlab.com/reviews/vehicle-safety/booster-seat/nuna-aace"}},{"id":"01M5H2MDP5XMQ5VNTX41YZKAD5","source_id":"modernnursery-com--nuna-aace-booster-seat:quick:source:7:blog","kind":"blog","text":"The rigid LATCH system lets the seat be used in vehicles with fixed, protruding head restraints, which very few high-back boosters allow.","locators":{"page":"https://www.thecarmom.com/articles/nuna-aace-booster-seat-review","publication":"thecarmom.com"}},{"id":"01M5H2ME0SQHZWYRGNTPF7B2Y9","source_id":"modernnursery-com--nuna-aace-booster-seat:quick:source:7:blog","kind":"blog","text":"The belt guide is small and vehicle-dependent: in one vehicle's third row the belt twisted in the guide, and in others it caught and did not retract smoothly, so belt movement should be checked after fitting.","locators":{"page":"https://www.thecarmom.com/articles/nuna-aace-booster-seat-review","publication":"thecarmom.com"}},{"id":"01M5H2MEB4562GSN0N1C2H1D22","source_id":"modernnursery-com--nuna-aace-booster-seat:quick:source:7:blog","kind":"blog","text":"It is one of the larger high-back boosters, so it is a poor choice for three across or for an adult sitting beside it, and it is bulky to move between vehicles.","locators":{"page":"https://www.thecarmom.com/articles/nuna-aace-booster-seat-review","publication":"thecarmom.com"}},{"id":"01M5H2MENNV5H1AT83K43D7HD6","source_id":"modernnursery-com--nuna-aace-booster-seat:quick:source:7:blog","kind":"blog","text":"Fabric and foam are flame-retardant free and machine washable, the seat is GREENGUARD Gold certified, and the packaging is unusually 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the writer drew no finding or fact from it, so it is not kept in the pack","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NAB84N49K3727NAAKPZ3","source_type":"facets","url":null,"reason":"embeddings skipped in the deep lane","detail":"the deep lane makes no embedding call; this pack has no facet texts and no vectors","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NANJ21ZVBK2PEEJG1D65","source_type":"manual","url":"https://nunababy.com/media/catalog/product/N/u/Nuna_AACE_UserManual_US_IM_001395C_8999.pdf","reason":"not_found","detail":"Left out: \"The lower anchors only hold the seat in place; the child is always restrained by the vehicle's lap and shoulder belt.\" (installation). The quote the research turn gave for it was not found in the text retained from this page.","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NB0ZNR07M6C8DG92ECS9","source_type":"manual","url":"https://nunababy.com/media/catalog/product/N/u/Nuna_AACE_UserManual_US_IM_001395C_8999.pdf","reason":"not_found","detail":"Left out: \"The seat is not certified for aircraft use because aircraft belts are lap-only.\" (air travel). The quote the research turn gave for it was not found in the text retained from this page.","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NBBDW4K7C4R0YGSD1MP8","source_type":"manual","url":"https://nunababy.com/media/catalog/product/N/u/Nuna_AACE_UserManual_US_IM_001395C_8999.pdf","reason":"not_found","detail":"Left out: \"The seat back hooks onto the seat bottom and rotates up until it clicks; no tools are needed.\" (assembly). The quote the research turn gave for it was not found in the text retained from this page.","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NBNWY8FBZGCCYKM98CBD","source_type":"manual","url":"https://nunababy.com/media/catalog/product/N/u/Nuna_AACE_UserManual_US_IM_001395C_8999.pdf","reason":"not_found","detail":"Left out: \"Metal and plastic parts can become very hot in the sun and should be touched before putting a child in.\" (warnings). The quote the research turn gave for it was not found in the text retained from this page.","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NC11KZZGXTJMJK3NAFRM","source_type":"manual","url":"https://nunababy.com/media/catalog/product/N/u/Nuna_AACE_UserManual_US_IM_001395C_8999.pdf","reason":"not_found","detail":"Left out: \"Do not install it in a front passenger seat with an active airbag unless the airbag can be switched off.\" (warnings). The quote the research turn gave for it was not found in the text retained from this page.","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NCBBRF90F10YKRPFA41K","source_type":"manual","url":"https://nunababy.com/media/catalog/product/N/u/Nuna_AACE_UserManual_US_IM_001395C_8999.pdf","reason":"not_found","detail":"Left out: \"The bottom of the head support must line up with the top of the child's shoulder.\" (fit). The quote the research turn gave for it was not found in the text retained from this page.","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NCNS7QM26J368Z014WQG","source_type":"manual","url":"https://nunababy.com/media/catalog/product/N/u/Nuna_AACE_UserManual_US_IM_001395C_8999.pdf","reason":"not_found","detail":"Left out: \"The seat is covered by a product-specific limited warranty running from the day of purchase; details are at nunababy.com/warranty.\" (warranty). 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It is never retried in a browser.","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NF3E15Z5DPYX7J59GKP1","source_type":"review","url":"https://www.reddit.com/r/TeslaModelX/comments/1tg1pf0/boosters_for_refreshed_6seater/","reason":"not read","detail":"Reddit's public .json view of the thread: The server refused RoboTrunk's named fetcher (HTTP 403). It is not retried under another identity. It is never retried in a browser.","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NFERK75BHQ4FP22PK9X1","source_type":"review","url":"https://www.influenster.com/reviews/nuna-aace-booster-car-seat-black","reason":"not read","detail":"The server refused RoboTrunk's named fetcher (HTTP 403). It is not retried under another identity.","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NFSBQD95883QPN0AMT7H","source_type":"review","url":"https://www.reddit.com/r/Mommit/comments/1sq4xdo/changing_car_seat_to_booster/","reason":"not read","detail":"Reddit's public .json view of the thread: The server refused RoboTrunk's named fetcher (HTTP 403). It is not retried under another identity. It is never retried in a browser.","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NG43J91G7FVKM95RZPXF","source_type":"review","url":"https://www.reddit.com/r/CPST/comments/1wq78sq/transition_to_booster_nuna_aace_vs_joie_bay/","reason":"not read","detail":"Reddit's public .json view of the thread: The server refused RoboTrunk's named fetcher (HTTP 403). It is not retried under another identity. It is never retried in a browser.","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NGF2TN0MCJTQS3FSQ35N","source_type":"review","url":"https://www.reddit.com/r/CPST/comments/1vncqcd/high_back_booster_recs/","reason":"not read","detail":"Reddit's public .json view of the thread: The server refused RoboTrunk's named fetcher (HTTP 403). It is not retried under another identity. It is never retried in a browser.","recorded_at":"2026-10-22T05:34:32.743Z"},{"id":"01M5H2NGSF2A2R6FGRFXNE58GS","source_type":"review","url":"https://www.reddit.com/r/CPST/comments/1n4ghbk","reason":"not read","detail":"Reddit's public .json view of the thread: The server refused RoboTrunk's named fetcher (HTTP 403). It is not retried under another identity. It is never retried in a browser.","recorded_at":"2026-10-22T05:34:32.743Z"}],"facet_check":null,"evidence_depth":{"note":"Deep read: the store's own data and 19 outside pages (the store's own product page; maker page; manual; review; blog; regulator recall search (CPSC (United States)); regulator recall search (Health Canada); official safety test results (CREP, the Child Restraint Evaluation Program); official safety test results (NHTSA's Car Seat Ease of Use Ratings); official safety test results (ADAC's child seat test); video review (derived summary of its captions)), each read in full by RoboTrunk and trimmed to its main content, then written up and checked. Facts from the maker or a manual quote the page word for word; what real users report is summarised with a link to the page read. Recall status was checked directly with CPSC (United States), Health Canada: The CPSC recall search for Nuna returned no recall records for the AACE, and the Health Canada recall data returned only two Nuna-related records — an illegal edible cannabis alert and an archived Nuna Zaaz high chair recall — neither of which concerns this booster seat. Official safety test results were looked up directly with CREP, the Child Restraint Evaluation Program, NHTSA's Car Seat Ease of Use Ratings, ADAC's child seat test: CREP, the Child Restraint Evaluation Program (Australia and New Zealand): Rated the Nuna Aace under the Australian model code CS-41-001AU as a booster under the 2021-onward protocol, added February 2024: crash protection 3.8 of 5 stars (66.7/100) and ease of use 3.2 of 5 stars (64.6/100). CREP records a 6.4 kg seat, 690–840 mm high, 440 mm deep and 500 mm wide. Ratings under this protocol are not comparable with older ones. NHTSA's Car Seat Ease of Use Ratings (United States): Rated the booster mode of model CS07007GRN (made 2021-12-07, 15.8 lb in this mode): overall 4 of 5 stars, securing the child 2 of 5, evaluation of labels 4 of 5, vehicle installation features 5 of 5, instructions 4 of 5. NHTSA notes the seat was not fully assembled out of the box, has no labels showing how to convert from high-back to no-back, the lap-only belt warning is not illustrated, and the manual storage is hard to find once installed. This is an ease-of-use rating, not a crash-test result. ADAC's child seat test (Germany, the UK and Europe): ADAC tested the Nuna AACE in 2018 and graded it 1,9 overall (good, lower is better) in the child age class; a separate Nuna Aace LX was tested in 2023, also at 1,9, and that entry is a different variant. Grades from different test years are not directly comparable. Not read, because they are member-only or refused RoboTrunk: Consumer Reports car seat ratings, Which? child car seat tests, JPMA certified products. Still open, with no evidence found: How many years does the limited warranty run and what does it cover?; Does the knit fabric pill or stain with everyday use?; Will the seat fit on a narrow middle seat next to two other child seats?; Does the shoulder belt guide work well in a third-row seat with a low belt anchor?; Can the cup holder be bought separately as a spare part?; Does the seat fit under a typical vehicle head restraint without removal?; Is a travel bag available for carrying the seat or its backrest?; How does the seat hold up in a side-impact crash with the pods retracted?; Do the different colourways use the same fabric or differ in feel?; What does Nuna say about using the seat with an inflatable or lap-only belt?; How much does the backless portion weigh on its own?.","tier":"complex","depth":"trimmed_read","model":"deepseek-flash","recall":{"note":"The CPSC recall search for Nuna returned no recall records for the AACE, and the Health Canada recall data returned only two Nuna-related records — an illegal edible cannabis alert and an archived Nuna Zaaz high chair recall — neither of which concerns this booster seat.","status":"no_recall_found","regulators_asked":["CPSC (United States)","Health Canada"]},"sources":[{"url":"https://modern-nursery-test-store.myshopify.com/products.json","role":"the store's own data","retained":true},{"url":"https://modern-nursery-test-store.myshopify.com/products/nuna-aace-booster-seat","role":"the store's own product page","retained":true},{"url":"https://nunababy.com/usa/all-products/aace-high-back-booster-seat","role":"maker page","retained":true},{"url":"https://nunababy.com/media/catalog/product/N/u/Nuna_AACE_UserManual_US_IM_001395C_8999.pdf","role":"manual","retained":true},{"url":"https://nunababy.com/media/catalog/product/N/u/Nuna_AACE_UserManual_US_7424.pdf","role":"manual","retained":true},{"url":"https://csftl.org/nuna-aace-review/","role":"review","retained":true},{"url":"https://www.babygearlab.com/reviews/vehicle-safety/booster-seat/nuna-aace","role":"review","retained":true},{"url":"https://www.thecarmom.com/articles/nuna-aace-booster-seat-review","role":"blog","retained":true},{"url":"https://carseatsmom.com/nuna-aace-review/","role":"blog","retained":true},{"url":"https://childrestraintfitting.com/nuna-aace-booster-review/","role":"review","retained":true},{"url":"https://www.consumerreports.org/babies-kids/car-seats/nuna-aace/m392737/","role":"review","retained":true},{"url":"https://www.babybargains.com/booster-car-seat-review-nuna-aace/","role":"review","retained":true},{"url":"https://www.babylist.com/hello-baby/best-booster-seats","role":"review","retained":true},{"url":"https://www.googaia.com/parent-score/car-seats/nuna-aace/","role":"review","retained":true},{"url":"https://www.saferproducts.gov/RestWebServices/Recall?format=json&Manufacturer=Nuna","role":"regulator recall search (CPSC (United States))","retained":true},{"url":"https://recalls-rappels.canada.ca/sites/default/files/opendata-donneesouvertes/HCRSAMOpenData.json","role":"regulator recall search (Health Canada)","retained":true},{"url":"https://www.childcarseats.com.au/api/v1/child_car_seats/filter_data/retrieve?_format=json","role":"official safety test results (CREP, the Child Restraint Evaluation Program)","retained":true},{"url":"https://api.nhtsa.gov/childSeats?dataSet=ratings","role":"official safety test results (NHTSA's Car Seat Ease of Use Ratings)","retained":true},{"url":"https://www.adac.de/rund-ums-fahrzeug/ausstattung-technik-zubehoer/kindersitze/kindersitztest/","role":"official safety test results (ADAC's child seat test)","retained":true},{"url":"https://www.youtube.com/watch?v=9HVQBybuL6g","role":"video review (derived summary of its captions)","retained":true},{"url":"https://snugglebugz.ca/blogs/learning-centre/nuna-aace-booster-seat-review","role":"blog","retained":false}],"reasoning":"low","embeddings":"skipped in the deep lane: no embedding call is made here","safety_tests":{"asked":["CREP, the Child Restraint Evaluation Program","NHTSA's Car Seat Ease of Use Ratings","ADAC's child seat test"],"walled":[{"reason":"Consumer Reports' car seat ratings pages declare themselves not free to read (isAccessibleForFree false, read 25-Sep-2026); RoboTrunk never reads past a paywall.","programme":"Consumer Reports car seat ratings"},{"reason":"Which? shows its child car seat test results to members only (read 25-Sep-2026); RoboTrunk never reads past a membership wall.","programme":"Which? child car seat tests"},{"reason":"JPMA's certified products list refused RoboTrunk's named fetcher (HTTP 403, 25-Sep-2026). It is not retried under another identity.","programme":"JPMA certified products"}],"results":[{"status":"tested_this_model","summary":"Rated the Nuna Aace under the Australian model code CS-41-001AU as a booster under the 2021-onward protocol, added February 2024: crash protection 3.8 of 5 stars (66.7/100) and ease of use 3.2 of 5 stars (64.6/100). CREP records a 6.4 kg seat, 690–840 mm high, 440 mm deep and 500 mm wide. Ratings under this protocol are not comparable with older ones.","programme":"CREP, the Child Restraint Evaluation Program (Australia and New Zealand)","source_url":"https://www.childcarseats.com.au/api/v1/child_car_seats/filter_data/retrieve?_format=json"},{"status":"tested_this_model","summary":"Rated the booster mode of model CS07007GRN (made 2021-12-07, 15.8 lb in this mode): overall 4 of 5 stars, securing the child 2 of 5, evaluation of labels 4 of 5, vehicle installation features 5 of 5, instructions 4 of 5. NHTSA notes the seat was not fully assembled out of the box, has no labels showing how to convert from high-back to no-back, the lap-only belt warning is not illustrated, and the manual storage is hard to find once installed. This is an ease-of-use rating, not a crash-test result.","programme":"NHTSA's Car Seat Ease of Use Ratings (United States)","source_url":"https://api.nhtsa.gov/childSeats?dataSet=ratings"},{"status":"tested_this_model","summary":"ADAC tested the Nuna AACE in 2018 and graded it 1,9 overall (good, lower is better) in the child age class; a separate Nuna Aace LX was tested in 2023, also at 1,9, and that entry is a different variant. Grades from different test years are not directly comparable.","programme":"ADAC's child seat test (Germany, the UK and Europe)","source_url":"https://www.adac.de/rund-ums-fahrzeug/ausstattung-technik-zubehoer/kindersitze/kindersitztest/"}]},"searched_for":["maker_page","manual","recall_notices","owner_reviews","blogs","forums","video_reviews"],"open_questions":["How many years does the limited warranty run and what does it cover?","Does the knit fabric pill or stain with everyday use?","Will the seat fit on a narrow middle seat next to two other child seats?","Does the shoulder belt guide work well in a third-row seat with a low belt anchor?","Can the cup holder be bought separately as a spare part?","Does the seat fit under a typical vehicle head restraint without removal?","Is a travel bag available for carrying the seat or its backrest?","How does the seat hold up in a side-impact crash with the pods retracted?","Do the different colourways use the same fabric or differ in feel?","What does Nuna say about using the seat with an inflatable or lap-only belt?","How much does the backless portion weigh on its own?"]}}