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Maxi-Cosi Pria Max+ All-in-One

The Maxi-Cosi Pria Max+ All-in-One rear-faces up to 40 lb, forward-faces up to 65 lb, and has an expiration of 10 years, per Maxi-Cosi.

  • $329.99List price
  • 40 lbRear-facing to
  • 65 lbHarness to
  • 100 lbBooster to
See it on Maxi-Cosi's site

When does it expire?

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All all-in-one car seats

Pria Max+ All-in-One: key facts

  • The Maxi-Cosi Pria Max+ All-in-One rear-faces from 5 to 40 lb and 19 to 40 in tall; forward-faces with a harness from 30 to 65 lb and 34.4 to 49 in tall; works as a booster from 40 to 100 lb and 43.4 to 52 in tall, per Maxi-Cosi.
  • Outgrown by height: "Rear-facing: the top of your child's head MUST be at least 1 in. (2.5 cm) below the top of the car seat's headrest. Forward-facing: the top of your child's ears MUST be below the top of the car seat's headrest. Booster: the top of your child's ears should never be above the top of the booster seat's headrest."
  • It installs with LATCH rear-facing, seat belt rear-facing, LATCH forward-facing + top tether, seat belt forward-facing + top tether or booster: vehicle lap/shoulder belt.
  • Maxi-Cosi says it expires 10 years after the date of manufacture.
  • Maxi-Cosi lists it as certified for aircraft ("This restraint is certified for aircraft use when used with the internal harness. / Booster Seat: This restraint is not certified for aircraft use, when used as a booster seat, because aircraft seats do not have shoulder belts.").

From Maxi-Cosi's manual and published specs. Always follow the limits on your seat's labels.

How the Pria Max+ All-in-One stacks up

Against the 57 all-in-one car seats we track. The shaded band is where the middle half of them fall; the dot is this one.

Expiration10 years

The same as most all-in-one car seats (10 years).

This one
9 yearsmiddle 10 years12 years
Rear-facing limit40 lb11th highest rear-facing limit of 57

The same as most all-in-one car seats (40 lb).

This one
40 lbmiddle 40 lb50 lb
Price$329.9929th lowest price of 54

Within the typical range for all-in-one car seats ($229.99 to $399.99).

This one
$99middle $319.99$799.95

What sets the Pria Max+ All-in-One apart

Measured against the 57 all-in-one car seats we compare, from each maker's published specs.

Next to its closest matches

Flying with the Pria Max+ All-in-One

Maxi-Cosi's label: “This restraint is certified for aircraft use when used with the internal harness. / Booster Seat: This restraint is not certified for aircraft use, when used as a booster seat, because aircraft seats do not have shoulder belts.”

What airlines say about car seats:

  • American: “Each ticketed customer is allowed 1 stroller and 1 car seat to be checked free of charge” “If an unoccupied, adjoining seat is not available, the gate agent will check the safety seat to your final destination.” Source
  • Alaska: “We will transport your child's car seat and stroller free of charge as checked baggage.” Source
  • JetBlue: “Checking a child safety seat will not count towards your checked baggage allowance and there is no fee assessed” Source
  • Spirit: “One (1) car seat will be accepted per child as checked baggage at no charge.” Source
  • Frontier: “strollers and car seats can be checked for free.” Source
  • Allegiant: “There is no charge for checking or gate checking one car seat per fare-paying passenger.” Source
  • Breeze: “Child seats may be carried on board the aircraft if a seat has been purchased for the Infant or Child” Source

Quoted from each airline's page as of 2026-11-02.

Where to buy the Pria Max+ All-in-One

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good to know
  • Check for recalls: Search the agency's recall list with the model number and date code from the label: NHTSA recall search.
  • Car seat use and installation: see NHTSA's car seat page, which also lists free car seat inspection by certified technicians. Check the label and the maker's instructions, and ask your pediatrician about your child.

Full specs

Maxi-Cosi Pria Max+ All-in-One
TypeAll-in-one
List price$329.99
Rear-facing weight5–40 lb
Rear-facing height19–40 in
Forward-facing weight30–65 lb
Forward-facing height34.4–49 in
Booster weight40–100 lb
Booster height43.4–52 in
Head ruleRear-facing: the top of your child's head MUST be at least 1 in. (2.5 cm) below the top of the car seat's headrest. Forward-facing: the top of your child's ears MUST be below the top of the car seat's headrest. Booster: the top of your child's ears should never be above the top of the booster seat's headrest.
Newborn insertHead pillow and body pillow (on select models), optional, rear-facing mode only; must be used together. Manual: when using the lower shoulder harness slots for smaller children, you MUST use the head and body pillow and the headrest MUST be in the lowest position.
InstallationLATCH rear-facing, seat belt rear-facing, LATCH forward-facing + top tether, seat belt forward-facing + top tether, booster: vehicle lap/shoulder belt
Load legNo
Anti-rebound barNo
RotatesNo
Recline positions3
Aircraft labelCertified for aircraft, per the maker
No added flame retardantsYes
Expires after10 years

Compare the Pria Max+ All-in-One with

How each closest rival differs from the Pria Max+ All-in-One, from the makers' specs.

Ask the meadow

Pria Max+ All-in-One: questions answered

From Maxi-Cosi's published specs, last checked 2026-11-06.

Does the Maxi-Cosi Pria Max+ All-in-One rear-face longer than other all-in-one seats?

15 of the 70 all-in-one seats we track rear-face to a higher weight than its 40 lb. The highest is the Britax One4Life ClickTight All-in-One at 50 lb. NHTSA: stay rear-facing "until he or she reaches the top height or weight limit allowed by your car seat's manufacturer." (NHTSA)

Can you bring the Maxi-Cosi Pria Max+ All-in-One on a plane?

Yes, Maxi-Cosi lists it as certified for aircraft; look for the red-lettered label that says so. The FAA asks that a car seat go in a window seat so it doesn't block the aisle, and the crew will look for that label.

Is it OK to buy a used Pria Max+ All-in-One?

NHTSA publishes guidance on used car seats on its car seat page. Maxi-Cosi lists a lifespan of 10 years from manufacture for this model. Check the label and the maker's instructions, and ask your pediatrician about your child.

Still wondering? Write to us at hello@cribpicks.com and we'll look it up.

More all-in-one car seats

Where these specs come from

Last checked 2026-11-06. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.