November 3, 2020 - Look for the serial label on your Britax seat. The Date of Manufacture (DOM) is printed there, and many models (made after 2018) also list the expiration date on that same label. If your label shows only the DOM, use your user guide to review ...

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The expiration date for your Britax car seat is generally 6 to 10 years from the Date of Manufacture, depending on the model. Refer to your car seat manual for the exact timeframe.

September 12, 2025 - A leader in child safety technology, Britax offers car seats, strollers and travel systems that give families the freedom and confidence to keep moving.

July 22, 2025 - You can also determine the expiration date of your Britax seat by looking up the lifespan of your seat in the Safety Information section of your user guide. Look for the sentence that says, “discontinue use of this child restraint if it is older than...” Then, find the DOM on the serial label.

May 23, 2025 - Quick Summary: Yes — car seats, bases and boosters all expire, usually 6–10 years after manufacture. Materials degrade, safety standards evolve and recalls happen, so never rely on a seat past its labeled date.

BRITAX Harness-2-Booster seats including the PIONEER, FRONTIER CT, and PINNACLE CT have a service life of 9 years. To prevent injury due to deterioration or hidden damage, do not use child restraints or booster seats older than their service life or if it has been in a moderate or severe crash.

August 8, 2025 - Look for the serial label on your Britax seat. The Date of Manufacture (DOM) is printed there, and many models (made after 2018) also list the expiration date on that same label. If your label shows only the DOM, use your user guide to review the Warnings section to determine the lifespan to calculate expiration from date of manufacture.

January 21, 2011 - The "classic" models have a 6yr life, the new models with the black base have a 7yr life. I was always told that Britax seats expire on the DOM - not the following Dec like Graco.

March 4, 2012 - ... Thanks so much! ... I always thought Britax was 6y, it's probably best to call and make sure though. ... I have a Britax Marathon that is 5 years old and was told it expires after 6 years.

The useful life or expiry date of a car seat is set by the manufacturer. While many people may count from the date of purchase, most car seat manufacturers require counting from the date of manufacture. You can find the date of manufacture on a sticker attached to the seat, although it may not always be easily visible.

August 25, 2017 - You don't say which Marathon you have. They've been six, seven, and 10 years. Depends which you have. G1: Six years, all expired Marathon 70/70-G3/G4/G4.1: Seven years Marathon ClickTight: 10 years.

July 6, 2012 - When does my seat expire? The service life for BRITAX infant car seats (including the base), older convertible car seats, youth seats (such as the BRITAX REGENT), and belt-positioning booster seats is 6 years from date of manufacture. Next generation BRITAX convertible car seats have a service ...

All children’s car seats and booster seats sold in Canada have an expiry or useful life date on them, even though this is not required by regulation.

December 12, 2015 - "Hi Tracey, we cannot comment on other manufacturers products, but we can assure you that BRITAX car seats do not have expiration dates.

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June 3, 2011 - And...the instructions for the Britax Marathon Classic (US instructions), see page 4, 8 bullets down. Like I said before, 6 years expiry. Britax seats have 6 years expiry for the infant seats, the infant/child (like the Marathon styles), and booster only (like the Parkway).

October 23, 2025 - We've tested and reviewed products since 1936. Read CR's review of the Britax Marathon ClickTight car seat to find out if it's worth it.

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