{
  "schema_version": "compare-page.v2",
  "page_id": "booster-car-seats-for-three-across-rear-seating",
  "url": "https://robotrunk.com/compare/want/booster-car-seats-for-three-across-rear-seating",
  "title": "Booster car seats listed for three-across rear-seat fit",
  "question": "Which booster car seats are listed as fitting three across in a rear seat?",
  "answer": "Britax Highpoint 2-Stage Belt-Positioning Booster Car Seat: The retailer claims the seat fits three across, though no compatible vehicle list or installation measurements are supplied.\nPEG PEREGO Viaggio Flex 120: The reviewer found its 14-inch base, 17-inch narrow-mode shoulder width and lack of armrests particularly useful in tight three-across arrangements, while warning that every exact arrangement still needs checking.\nBritax UpNGo: The maker does not guarantee that three of these seats will fit across every vehicle's back seat.",
  "kind": "booster car seat",
  "market": "US",
  "generated_at": "2026-10-15T20:30:36.590Z",
  "columns": [
    "Three-across fit",
    "Seat width"
  ],
  "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": "p1.f2",
      "product": "Britax UpNGo",
      "field": "dimensions",
      "value": "Assembled dimensions are 15.5 inches long, 17.1 inches wide and 9 inches high.",
      "stated_as": "Product Dimensions: 15.5\" L × 17.1\" W × 9\" H",
      "source_type": "guide",
      "source_url": "https://strolleria.myshopify.com/products/britax-upngo-backless-booster-car-seat-raven-black",
      "source_read_at": "2026-10-13T01:06:58.930Z"
    },
    {
      "ref": "p1.f7",
      "product": "Britax UpNGo",
      "field": "three-across fit not guaranteed",
      "value": "The maker does not guarantee that three of these seats will fit across every vehicle's back seat.",
      "stated_as": "*Britax cannot guarantee 3-across fitment in all vehicles.",
      "source_type": "listing",
      "source_url": "https://strolleria.myshopify.com/products.json",
      "source_read_at": "2026-10-12T20:06:05.806Z"
    },
    {
      "ref": "p1.f9",
      "product": "Britax UpNGo",
      "field": "seat width and three-across fit",
      "value": "The seat is 17.1 inches wide (SpaceSaver design), intended to leave room for siblings or carpoolers.",
      "stated_as": "17.1” seat leaves plenty of room for siblings & carpoolers without compromising trusted Britax safety and premium comfort.",
      "source_type": "guide",
      "source_url": "https://us.britax.com/shop/car-seats/upngo-backless-belt-positioning-booster-seat",
      "source_read_at": "2026-10-13T01:07:00.569Z"
    },
    {
      "ref": "p2.f4",
      "product": "PEG PEREGO Viaggio Flex 120",
      "field": "three-across fit",
      "value": "The reviewer found its 14-inch base, 17-inch narrow-mode shoulder width and lack of armrests particularly useful in tight three-across arrangements, while warning that every exact arrangement still needs checking.",
      "stated_as": "The reviewer found its 14-inch base, 17-inch narrow-mode shoulder width and lack of armrests particularly useful in tight three-across arrangements, while warning that every exact arrangement still needs checking.",
      "source_type": "review",
      "source_url": "https://www.thecarmom.com/articles/peg-flex-120-review",
      "source_read_at": "2026-09-28T08:30:32.256Z"
    },
    {
      "ref": "p2.f8",
      "product": "PEG PEREGO Viaggio Flex 120",
      "field": "dimensions",
      "value": "Unfolded dimensions are 22 by 17.25 by 26.75 inches; folded dimensions are 23.5 by 17.25 by 9.75 inches.",
      "stated_as": "Unfolded Product Dimensions\n22\" x 17.25\" x 26.75\"\nFolded Product Dimensions\n23.5\" x 17.25\" x 9.75\"",
      "source_type": "guide",
      "source_url": "https://www.pegperego.com/en_us/baby/viaggio-flex-120-pcode-000000000479.html",
      "source_read_at": "2026-09-28T08:29:40.004Z"
    },
    {
      "ref": "p4.f1",
      "product": "Britax Highpoint 2-Stage Belt-Positioning Booster Car Seat",
      "field": "Three-across fit",
      "value": "The retailer claims the seat fits three across, though no compatible vehicle list or installation measurements are supplied.",
      "stated_as": "Fits three across to give you extra space when piling in for family trips or carpooling to soccer practice.",
      "source_type": "guide",
      "source_url": "https://anb-baby.myshopify.com/products/britax-highpoint-2-stage-belt-positioning-booster-car-seat",
      "source_read_at": "2026-09-24T12:04:22.568Z"
    },
    {
      "ref": "p4.f8",
      "product": "Britax Highpoint 2-Stage Belt-Positioning Booster Car Seat",
      "field": "Dimensions",
      "value": "Consumer Reports lists a 17-inch base, 21-inch overall width and 35-inch overall height, with no width adjustment.",
      "stated_as": "Base width\n17 in.\nOverall width\n21 in.\nOverall height\n35 in.\nWidth adjustment\nNo",
      "source_type": "review",
      "source_url": "https://www.consumerreports.org/babies-kids/car-seats/britax-highpoint-2-stage/m402932/",
      "source_read_at": "2026-09-24T12:04:34.160Z"
    }
  ],
  "rows": [
    {
      "rank": 1,
      "merchant": {
        "slug": "anbbaby-com",
        "display_name": "anbbaby.com"
      },
      "product_id": "gid://shopify/Product/6577953243222",
      "name": "Britax Highpoint 2-Stage Belt-Positioning Booster Car Seat",
      "url": "/products/ucp/anbbaby-com/6577953243222",
      "why": "The retailer claims the seat fits three across, though no compatible vehicle list or installation measurements are supplied.",
      "cells": [
        {
          "column": "Three-across fit",
          "fact": {
            "field": "Three-across fit",
            "value": "The retailer claims the seat fits three across, though no compatible vehicle list or installation measurements are supplied.",
            "stated_as": "Fits three across to give you extra space when piling in for family trips or carpooling to soccer practice.",
            "source_type": "guide",
            "source_url": "https://anb-baby.myshopify.com/products/britax-highpoint-2-stage-belt-positioning-booster-car-seat",
            "source_read_at": "2026-09-24T12:04:22.568Z"
          }
        },
        {
          "column": "Seat width",
          "fact": {
            "field": "Dimensions",
            "value": "Consumer Reports lists a 17-inch base, 21-inch overall width and 35-inch overall height, with no width adjustment.",
            "stated_as": "Base width\n17 in.\nOverall width\n21 in.\nOverall height\n35 in.\nWidth adjustment\nNo",
            "source_type": "review",
            "source_url": "https://www.consumerreports.org/babies-kids/car-seats/britax-highpoint-2-stage/m402932/",
            "source_read_at": "2026-09-24T12:04:34.160Z"
          }
        }
      ]
    },
    {
      "rank": 2,
      "merchant": {
        "slug": "anbbaby-com",
        "display_name": "anbbaby.com"
      },
      "product_id": "gid://shopify/Product/2820585193572",
      "name": "PEG PEREGO Viaggio Flex 120",
      "url": "/products/ucp/anbbaby-com/2820585193572",
      "why": "The reviewer found its 14-inch base, 17-inch narrow-mode shoulder width and lack of armrests particularly useful in tight three-across arrangements, while warning that every exact arrangement still needs checking.",
      "cells": [
        {
          "column": "Three-across fit",
          "fact": {
            "field": "three-across fit",
            "value": "The reviewer found its 14-inch base, 17-inch narrow-mode shoulder width and lack of armrests particularly useful in tight three-across arrangements, while warning that every exact arrangement still needs checking.",
            "stated_as": "The reviewer found its 14-inch base, 17-inch narrow-mode shoulder width and lack of armrests particularly useful in tight three-across arrangements, while warning that every exact arrangement still needs checking.",
            "source_type": "review",
            "source_url": "https://www.thecarmom.com/articles/peg-flex-120-review",
            "source_read_at": "2026-09-28T08:30:32.256Z"
          }
        },
        {
          "column": "Seat width",
          "fact": {
            "field": "dimensions",
            "value": "Unfolded dimensions are 22 by 17.25 by 26.75 inches; folded dimensions are 23.5 by 17.25 by 9.75 inches.",
            "stated_as": "Unfolded Product Dimensions\n22\" x 17.25\" x 26.75\"\nFolded Product Dimensions\n23.5\" x 17.25\" x 9.75\"",
            "source_type": "guide",
            "source_url": "https://www.pegperego.com/en_us/baby/viaggio-flex-120-pcode-000000000479.html",
            "source_read_at": "2026-09-28T08:29:40.004Z"
          }
        }
      ]
    },
    {
      "rank": 3,
      "merchant": {
        "slug": "strolleria-com",
        "display_name": "strolleria.com"
      },
      "product_id": "gid://shopify/Product/8085815623754",
      "name": "Britax UpNGo",
      "url": "/products/ucp/strolleria-com/8085815623754",
      "why": "The seat is 17.1 inches wide (SpaceSaver design), intended to leave room for siblings or carpoolers.",
      "cells": [
        {
          "column": "Three-across fit",
          "fact": {
            "field": "three-across fit not guaranteed",
            "value": "The maker does not guarantee that three of these seats will fit across every vehicle's back seat.",
            "stated_as": "*Britax cannot guarantee 3-across fitment in all vehicles.",
            "source_type": "listing",
            "source_url": "https://strolleria.myshopify.com/products.json",
            "source_read_at": "2026-10-12T20:06:05.806Z"
          }
        },
        {
          "column": "Seat width",
          "fact": {
            "field": "dimensions",
            "value": "Assembled dimensions are 15.5 inches long, 17.1 inches wide and 9 inches high.",
            "stated_as": "Product Dimensions: 15.5\" L × 17.1\" W × 9\" H",
            "source_type": "guide",
            "source_url": "https://strolleria.myshopify.com/products/britax-upngo-backless-booster-car-seat-raven-black",
            "source_read_at": "2026-10-13T01:06:58.930Z"
          }
        }
      ]
    }
  ]
}