britax car seats marathon

Can someone please explain why I keep hearing Britax car seats are only good for 6 years?

I can’t find anywhere in the marathon manual that they are only good for 6 years, but people on Craigs list have been saying that Could someone could please explain if this is true and why?

Britax says so. Most car seat manufacturers recommend their restraints not be used after a certain period of time. From Britax’s web site FAQ:

Britax recommends that the use of a child restraint be discontinued if the restraint is older than six years of age or has been in a severe crash. After six years, technology has changed, components degrade from the environment (depending on how and where stored), parts get lost or installed incorrectly, or instructions and labels may not be available or not legible. The restraint may be unsafe and should be destroyed.

Also it’s on page 3 of the Marathon manual on their website: Discontinue use of a child restraint that is older than six years or has been in a severe crash to prevent injury due to deterioration or hidden damage.

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