Convertible car seats that fit three across in one back seat
Which convertible car seats fit three across in one back seat?
Graco SlimFit3 LX: Graco confirmed that three SlimFit3 LX seats fit three-across in a 2019-2021 Toyota RAV4 in several configurations, including all forward-facing, all rear-facing, and mixed modes. Britax One4Life Slim: The seat is 17.5 in wide and Britax says it is designed to fit three across. The review rates it 4.8 out of 5 and calls it a strong choice, especially for fitting three seats across. Diono Radian 3R SafePlus: The retailer says the slim-fit design permits three seats across in most midsize vehicles. Diono Radian 3QXT+: At 17 inches wide the seat is stated to fit three across in most midsize vehicles. Clek Foonf: Confirmed a three-across fit in a midsize sedan next to another seat and a booster, crediting the roughly 17 in width.
| Product | Why | Width | Three-across fit | Weight |
|---|---|---|---|---|
| 1. Graco SlimFit3 LX sold by albeebaby.com | Graco confirmed that three SlimFit3 LX seats fit three-across in a 2019-2021 Toyota RAV4 in several configurations, including all forward-facing, all rear-facing, and mixed modes. | The seat measures about 20.7 inches long by 16.7 inches wide by 24.5 inches high. blog | Graco confirmed that three SlimFit3 LX seats fit three-across in a 2019-2021 Toyota RAV4 in several configurations, including all forward-facing, all rear-facing, and mixed modes. blog | The reviewer measured the seat at about 18 pounds. review |
| 2. Britax One4Life Slim sold by megababiesusa.com | The seat is 17.5 in wide and Britax says it is designed to fit three across. | The seat is 17.5 in wide and Britax says it is designed to fit three across. guide | The review rates it 4.8 out of 5 and calls it a strong choice, especially for fitting three seats across. review | - |
| 3. Diono Radian 3R SafePlus sold by anbbaby.com | The retailer says the slim-fit design permits three seats across in most midsize vehicles. | It measures 28.5 in high by 17 in wide by 16 in deep unfolded, and 11.5 in deep folded. guide | The retailer says the slim-fit design permits three seats across in most midsize vehicles. guide | The seat weighs 29.3 lb. guide |
| 4. Diono Radian 3QXT+ (Radian 3QXT FirstClass SafePlus), model 53000-NA-01 (Black Jet) / 53001-NA-01 (Gray Slate) sold by megababiesusa.com | At 17 inches wide the seat is stated to fit three across in most midsize vehicles. | The seat measures 16 inches deep by 17 inches wide by 28 inches tall. listing | At 17 inches wide the seat is stated to fit three across in most midsize vehicles. guide | The store lists the seat weight as 34.2 lb; NHTSA lists 30.7 lb rear-facing, 28.3 lb forward-facing and 26.5 lb in booster mode for model 53000-NA-01, so the sources disagree on seat weight. listing |
| 5. Clek Foonf sold by albeebaby.com | Confirmed a three-across fit in a midsize sedan next to another seat and a booster, crediting the roughly 17 in width. | - | Confirmed a three-across fit in a midsize sedan next to another seat and a booster, crediting the roughly 17 in width. review | - |
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Written 2026-10-21T23:32:56.088Z.
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