should cars have 4 point isofix

[LilySnape]

was watching a crash test video for a britax FF seat the other day and i noticed that on all FF isofix seats the top always comes forward in a crash while the bottom stays put, wouldn't having 2 more isofix points at the top of the seat make it more rigid and stable at both ends to stop the child jolting forwards with the seat in a crash ? just a thought for future safety measures

[AliceMum09]

Some forward facing ISOFIX seats have a top tether strap. This attaches to the top tether point in your car, typically it's found on the back of the car's rear seats or on the boot floor.

[LilySnape]

ive never seen seats with those on i jist think the top of the carseat needs fixing to stop it jolting forward so far in a crash

[Frazzled2207]

Wr have an advansafix with the top tether to do exactly that

[LilySnape]

wish other car seats had that technology as standard though its the thing that stands between life and death

[Sephipops]

There needs to be some give in the seat as well though. It's the seat moving that absorbs some of the impact of the crash. Similar way to how a seatbelt stretches in a crash to a certain extent. If it was solid then it would do more damage. The extra tether points on carseats are there to prevent it rolling completely over IIRC

[Strifae64]

It's similar to how a regular seatbelt works in a way, they do allow some forward give to absorb some of the impact? I would imagine even the top tether has some give in it?

[museumum]

Ours has a top tether. It's not fancy or particularly new.

Isofix works as the seat clips to a bar that's part of the chassis of the car. I don't see how they could build an equivalent top bar into cars without making it so the rear seats couldn't fold down.