Booster car seats listed for three-across rear-seat fit
Which booster car seats are listed as fitting three across in a rear seat?
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. PEG 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. Britax UpNGo: The maker does not guarantee that three of these seats will fit across every vehicle's back seat.
| Product | Why | Three-across fit | Seat width |
|---|---|---|---|
| 1. Britax Highpoint 2-Stage Belt-Positioning Booster Car Seat sold by anbbaby.com | The retailer claims the seat fits three across, though no compatible vehicle list or installation measurements are supplied. | The retailer claims the seat fits three across, though no compatible vehicle list or installation measurements are supplied. guide | Consumer Reports lists a 17-inch base, 21-inch overall width and 35-inch overall height, with no width adjustment. review |
| 2. PEG PEREGO Viaggio Flex 120 sold by anbbaby.com | 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. | 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. review | Unfolded dimensions are 22 by 17.25 by 26.75 inches; folded dimensions are 23.5 by 17.25 by 9.75 inches. guide |
| 3. Britax UpNGo sold by strolleria.com | The seat is 17.1 inches wide (SpaceSaver design), intended to leave room for siblings or carpoolers. | The maker does not guarantee that three of these seats will fit across every vehicle's back seat. listing | Assembled dimensions are 15.5 inches long, 17.1 inches wide and 9 inches high. guide |
Also cited in the text
- Britax UpNGo, seat width and three-across fit: The seat is 17.1 inches wide (SpaceSaver design), intended to leave room for siblings or carpoolers. guide
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Written 2026-10-15T20:30:36.590Z.
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