# Britax Safe n Sound Maxi Guard AHR Car Seat V18 \| 3 sellers, live prices, prepared checkout ## Built for shopping agents: what RoboTrunk does for every product We asked shopping agents, including Meta's Muse first-hand, what they need from a store. This is what they asked for, and what we have built. RoboTrunk is working through its catalogue, so a step may not be done for this one yet. Where a step is done per product, the line ends with what is done for this product. - **Deep research:** We read the maker's manual, independent reviews, video review transcripts and the store's own page, and publish each finding with its source and the date read. `check_product` returns them with a source for each. *This product:* 19 checked facts, research depth trimmed read, checked 2026-10-01T18:34:34.837Z, in the [evidence pack](/agent/evidence/babykingdom-com-au--britax-safe-n-sound-maxi-guard-ahr-car-seat-v18). - **Receipts:** Every published fact has a receipt showing its source quote. `check_product` and `get_product` return the checked facts that have one. *This product:* each checked fact listed below has one; the source quotes are in the [evidence pack](/agent/evidence/babykingdom-com-au--britax-safe-n-sound-maxi-guard-ahr-car-seat-v18). - **Safety:** `check_product` asks the product-safety regulators live (US CPSC, NHTSA and FDA, Health Canada, the UK's OPSS, Australia's ACCC) whether a recall names a product, listed here or not, and flags a match with its notice; a recall never blocks the buyer. *This product:* this page holds no recall result for it yet; `check_product` asks the regulators now. - **Recall watch:** `watch_recalls` tells the buyer if a product bought here is recalled later. - **Second-hand listings:** `check_listing` runs the same recall check on a second-hand listing someone found, and adds what the listing leaves out and the price new. - **The real price:** The full price to the buyer's country, with shipping and tax, each part quoted from the store's policy or, where a part is not settled, what the total depends on: `check_product` and `search_catalog` take the buyer's country and postcode. *This product:* this store's price was read from its catalogue at 2026-10-26T19:58:24.270Z. - **A checkout that finishes:** RoboTrunk lists only stores whose agent checkout it has verified. `create_checkout` prepares the order at the store; `complete_checkout` returns a link to the store's own checkout. The checkout can be finished in either of two ways: the person taps the link in their own browser, or their agent opens it and completes the checkout. RoboTrunk checks the store's total against a budget ceiling before it issues the link. Payment always happens on the store's own page, and RoboTrunk never holds the money. No store pays for placement; RoboTrunk may earn a commission from some stores via their affiliate programs. - **Markdown copy:** Every page has a Markdown copy: [this page's copy](https://robotrunk.com/products/ucp/babykingdom-com-au/9565215785192.md). - **Photos and ratings:** Search results carry the product photo and, where the store's own page publishes one, its rating (`search_catalog`). - **Fit answers:** `check_fit` answers whether a listing fits a car, pram or bottle, with the exact quote from the store's page, or says it is not known. - **Back-in-stock watches:** `watch_back_in_stock` starts a watch on a listing the store shows as sold out; `get_back_in_stock_watch` shows when it is back in stock. - **Maker's manual:** `ask_product_manual` answers from the maker's manual with the exact passage and page, or says the manual does not cover it. - **Tools and guide:** Every tool and its description is at https://robotrunk.com/mcp; the guide is at [/agents\.md](/agents.md). - **Research from other stores:** Coming soon: reading other stores' listings of the same product as new research sources. Sold and shipped by babykingdom\.com\.au, babykingdom.com.au; payment happens on the store's own checkout. Brand: Britax Safe n Sound ## Variants - Grey: AUD 399.99; in stock. Variant id: `gid://shopify/ProductVariant/48790796894440` - Seller: babykingdom\.com\.au. Price: AUD 399\.99. Stock: in stock. Variant: Grey, variant id `gid://shopify/ProductVariant/48790796894440`. shipping not recorded; confirmed at merchant checkout. returns not recorded; confirmed at merchant checkout. [Public evidence](https://kh9bh3-kb.myshopify.com/products/britax-safe-n-sound-maxi-guard-ahr-car-seat-v18). [Get ready to buy from babykingdom\.com\.au: prepare checkout](/checkout-prepare?merchant=babykingdom-com-au&product_id=gid%3A%2F%2Fshopify%2FProduct%2F9565215785192&variant_id=gid%3A%2F%2Fshopify%2FProductVariant%2F48790796894440). - Seller: babylittleplanet\.com\.au. Price: AUD 479\.00. Stock: in stock. Variant: Grey, variant id `gid://shopify/ProductVariant/31220829814854`. shipping not recorded; confirmed at merchant checkout. returns not recorded; confirmed at merchant checkout. [Public evidence](https://baby-little-planet.myshopify.com/products/britax-safe-n-sound-maxi-guard). [Get ready to buy from babylittleplanet\.com\.au: prepare checkout](/checkout-prepare?merchant=babylittleplanet-com-au&product_id=gid%3A%2F%2Fshopify%2FProduct%2F4353984954438&variant_id=gid%3A%2F%2Fshopify%2FProductVariant%2F31220829814854). - Seller: babyvillage\.com\.au. Price: AUD 479\.00. Stock: in stock. Variant: Default Title, variant id `gid://shopify/ProductVariant/48351232950456`. shipping not recorded; confirmed at merchant checkout. returns not recorded; confirmed at merchant checkout. [Public evidence](https://babyvillage-store.myshopify.com/products/britax-safe-n-sound-maxi-guard-grey). [Get ready to buy from babyvillage\.com\.au: prepare checkout](/checkout-prepare?merchant=babyvillage-com-au&product_id=gid%3A%2F%2Fshopify%2FProduct%2F7307056971960&variant_id=gid%3A%2F%2Fshopify%2FProductVariant%2F48351232950456). - Black: AUD 399.99; in stock. Variant id: `gid://shopify/ProductVariant/48790796927208` - Seller: babykingdom\.com\.au. Price: AUD 399\.99. Stock: in stock. Variant: Black, variant id `gid://shopify/ProductVariant/48790796927208`. shipping not recorded; confirmed at merchant checkout. returns not recorded; confirmed at merchant checkout. [Public evidence](https://kh9bh3-kb.myshopify.com/products/britax-safe-n-sound-maxi-guard-ahr-car-seat-v18). [Get ready to buy from babykingdom\.com\.au: prepare checkout](/checkout-prepare?merchant=babykingdom-com-au&product_id=gid%3A%2F%2Fshopify%2FProduct%2F9565215785192&variant_id=gid%3A%2F%2Fshopify%2FProductVariant%2F48790796927208). - Seller: babylittleplanet\.com\.au. Price: AUD 479\.00. Stock: in stock. Variant: Black, variant id `gid://shopify/ProductVariant/31220829782086`. shipping not recorded; confirmed at merchant checkout. returns not recorded; confirmed at merchant checkout. [Public evidence](https://baby-little-planet.myshopify.com/products/britax-safe-n-sound-maxi-guard). [Get ready to buy from babylittleplanet\.com\.au: prepare checkout](/checkout-prepare?merchant=babylittleplanet-com-au&product_id=gid%3A%2F%2Fshopify%2FProduct%2F4353984954438&variant_id=gid%3A%2F%2Fshopify%2FProductVariant%2F31220829782086). - Seller: babyvillage\.com\.au. Price: AUD 449\.00. Stock: in stock. Variant: Black, variant id `gid://shopify/ProductVariant/48351232524472`. shipping not recorded; confirmed at merchant checkout. returns not recorded; confirmed at merchant checkout. [Public evidence](https://babyvillage-store.myshopify.com/products/britax-safe-n-sound-maxi-guard-1). [Get ready to buy from babyvillage\.com\.au: prepare checkout](/checkout-prepare?merchant=babyvillage-com-au&product_id=gid%3A%2F%2Fshopify%2FProduct%2F6988250546360&variant_id=gid%3A%2F%2Fshopify%2FProductVariant%2F48351232524472). ## Checked facts Each fact below was checked against the source it cites before it was published. Each carries that source's link and the time RoboTrunk read it. 19 checked facts, checked 2026-10-01T18:34:34.837Z. Research depth: trimmed read. Deep read: the store's own data and 9 outside pages \(the store's own product page; maker page; review; regulator recall search \(CPSC \(United States\)\); regulator recall search \(Health Canada\); regulator recall search \(ACCC Product Safety Australia\); 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 \(ADAC's child seat test\)\), 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, ACCC Product Safety Australia: No applicable recall was found in the supplied CPSC or Health Canada searches, or the ACCC feed\. The ACCC feed contains only the 100 most recent recalls from 2026\-05\-15 to 2026\-09\-29, so it does not exclude older Australian recalls\. User requests for a recall are not official recall notices\. 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: The complete published list includes Maxi Guard BS8300B\-020133 and Maxi Guard Pro\+ BS8300A\-020133, but the supplied sources do not establish that BS8300B\-020133 is the V18 generation\. No rating is assigned to V18 here\. Pro\+ is a different variant\. NHTSA's Car Seat Ease of Use Ratings: Maxi Guard AHR V18 is absent from the stated complete published ratings list\. This programme rates ease of use, not crash protection\. ADAC's child seat test: Maxi Guard AHR V18 is absent from the stated complete published results list covering tests since 2015\. Not read, because they are member\-only or refused RoboTrunk: Consumer Reports car seat ratings, Which? child car seat tests, JPMA certified products\. - colours and identifiers: Grey has SKU and GTIN 9311742080290; Black has SKU and GTIN 9311742080283\.. Source: (listing), read 2026-09-30T20:01:17.971Z. - orientation and harness: This is a forward\-facing seat with an integrated six\-point harness, not a rear\-facing seat\.. Source: (guide), read 2026-10-01T18:11:22.980Z. - feel: The maker describes the Maxi Guard family's padding as soft, with plush shoulder inserts\.. Source: (guide), read 2026-10-01T18:11:25.225Z. - review applicability: The listing's structured GTIN matches the Grey V18, but reviews span older years and include visibly different features\. Treat these as Maxi Guard family experiences, not verified V18\-specific reports\.. Source: (review), read 2026-10-01T18:11:26.045Z. - age suitability: The stated approximate age range is six months to eight years\.. Source: (guide), read 2026-10-01T18:11:22.980Z. - vehicle fit: The maker says its slim profile permits three across in most family cars\. This is not confirmation for any particular vehicle or combination of seats\.. Source: (guide), read 2026-10-01T18:11:25.225Z. - height markers: The lower height marker is approximately 290 mm and the upper marker approximately 510 mm\. These are marker measurements, not stated overall child heights\.. Source: (guide), read 2026-10-01T18:11:22.980Z. - washing: The maker says all covers are removable and machine washable\.. Source: (guide), read 2026-10-01T18:11:25.225Z. - weight: The store lists a seat weight of 6\.3 kg\.. Source: (guide), read 2026-10-01T18:11:22.980Z. - storage: The maker describes built\-in side pockets for bottles, snacks or toys\.. Source: (guide), read 2026-10-01T18:11:25.225Z. - dimensions: The store lists 460 mm width, 505 mm depth and an adjustable height of 680–865 mm\.. Source: (guide), read 2026-10-01T18:11:22.980Z. - warranty: The maker states a five\-year Maxi Guard warranty from purchase; V18\-specific terms and exclusions are not supplied\.. Source: (guide), read 2026-10-01T18:11:25.225Z. - head protection materials: The adjustable AHR headrest has deep side wings lined with EPS, described as protecting the head during side impacts\.. Source: (guide), read 2026-10-01T18:11:22.980Z. - safety standard: The maker states that Maxi Guard is designed to comply with AS/NZS 1754:2013, issued by SAI Global\.. Source: (guide), read 2026-10-01T18:11:25.225Z. - height adjustment: The headrest adjusts from the front while the child is seated, without uninstalling the seat\. Headrest adjustment also repositions the shoulder harness without rethreading\.. Source: (guide), read 2026-10-01T18:11:22.980Z. - access and buckle storage: Pivoting armrests and an EZ\-Buckle insert help with entry; holders store the harness buckles\.. Source: (guide), read 2026-10-01T18:11:22.980Z. - recline: There are two recline positions\.. Source: (guide), read 2026-10-01T18:11:22.980Z. - padding and included comfort features: The store describes a generous seating area with trim padding, a cushioned insert and shoulder pads; it does not specify padding thickness\.. Source: (guide), read 2026-10-01T18:11:22.980Z. - cover removal: The cover can be removed without removing the harness\.. Source: (guide), read 2026-10-01T18:11:22.980Z. The full evidence pack, with every citation, source and gap: [evidence pack](/agent/evidence/babykingdom-com-au--britax-safe-n-sound-maxi-guard-ahr-car-seat-v18) ## Questions we researched but could not confirm Every fact above is cited. To find them we read the store listing, the maker's page, owner reviews, the recall records of CPSC \(United States\), Health Canada and ACCC Product Safety Australia and the safety test results of CREP, the Child Restraint Evaluation Program, NHTSA's Car Seat Ease of Use Ratings and ADAC's child seat test. We also chased the questions below across those sources and found no reliable answer, so you know exactly where the evidence ends and never have to guess. - Is V18 the same generation as CREP's tested Maxi Guard BS8300B\-020133? - Will it fit my vehicle alongside my other child seats without rubbing or blocking buckles? - What installation method, anchorage points and tools does V18 require? - How can I prevent my child from reaching and operating the harness\-release control? - What child weight limits apply? - How should the entry and exit height markers be checked against my child? - What warnings and restrictions apply to using this forward\-facing seat from six months? - What fabric, shell and padding materials are used? - How thick is the padding? - Does the finish rub off or the fabric fade with use? - What exactly comes in the box? - What washing temperature, detergent and drying method are permitted? - How should the harness, buckle and shell be cleaned? - What are V18's warranty exclusions and claim requirements? - What is the seat's service life and replacement policy after a crash? To buy this through RoboTrunk, pass merchant `babykingdom-com-au`, product_id `gid://shopify/Product/9565215785192` and one variant_id from the list above. Product image of Britax Safe n Sound Maxi Guard AHR Car Seat V18, supplied by babykingdom\.com\.au: This product on babykingdom.com.au: Retrieved 2026-10-26T19:58:24.270Z from This page is published by RoboTrunk, a store built for shopping agents. The store named on this page sells the product and ships it. RoboTrunk is not the seller and never holds the money. Buying works in one path. RoboTrunk's tools prepare a checkout at that store, then hand back a short-lived link. The person approves the total; once RoboTrunk has checked the store's total against it, the person is given the checkout link to tap in their own browser, or, if the person prefers and gives permission, their agent may open the link and finish there, and payment always happens on the store's own checkout page. RoboTrunk never takes the payment or sees a card. Where the rest of this site is: - /agent/story.md is what RoboTrunk is and how it works, in full. - /agent/tools.json is every tool, its arguments and its answers. - /agent/merchants is every store you can buy from through RoboTrunk. - /products/ucp is every store's indexed products. - /products/search is one search across every store, in plain words. - [What RoboTrunk is](/agent/story.md) - [Every tool, in your browser through WebMCP](/agent) - [The tools and how to call them](/agent/tools.json) - [The stores you can buy from](/agent/merchants) - [Every store's products](/products/ucp) - [Search every store at once](/products/search)