Michigan car seat law (2026)
Children younger than 2 years, unless they have reached the manufacturer's weight or height limit, must ride in a rear-facing system; children 2 through 4 years, unless at the manufacturer limit, in a forward-facing restraint; children 5 through 7 years, unless 4 feet 9 inches tall, in a belt-positioning booster.
| Provision | What the IIHS table lists for Michigan |
|---|---|
| Child restraint | Children younger than 2 years, unless they have reached the manufacturer's weight or height limit, must ride in a rear-facing system; children 2 through 4 years, unless at the manufacturer limit, in a forward-facing restraint; children 5 through 7 years, unless 4 feet 9 inches tall, in a belt-positioning booster. |
| Adult seat belt | Ages 8 through 15, or children at least 57 inches tall, must use a seat belt. |
| Rear seat | Children 12 years and younger must be in the rear seat if available. |
The law names ages — the seat's specs decide the switch
Every threshold above meets a spec question: is your child still within the seat's own height/weight limits for that mode? That's published manufacturer data, and it's what this site organizes:
- Keeping a toddler rear-facing longer → extended rear-facing seats (higher rear-facing limits).
- Moving from harness to booster → booster seats, incl. narrow boosters for 3-across.
- One seat across the whole journey → all-in-one (4-in-1) seats.
- Not sure a seat works in your car → how to check fit.
FAQ
What is the car seat law in Michigan?
Children younger than 2 years, unless they have reached the manufacturer's weight or height limit, must ride in a rear-facing system; children 2 through 4 years, unless at the manufacturer limit, in a forward-facing restraint; children 5 through 7 years, unless 4 feet 9 inches tall, in a belt-positioning booster. (As published in the IIHS state law table, retrieved 2026-07-16 — a summary, not legal advice.)
When can a child use just a seat belt in Michigan?
Ages 8 through 15, or children at least 57 inches tall, must use a seat belt. Best practice is to keep using a booster until the adult belt fits properly — lap flat on the thighs, shoulder belt across the chest — regardless of the legal minimum.
Does Michigan require children to ride in the back seat?
Children 12 years and younger must be in the rear seat if available. (As published in the IIHS state law table.) NHTSA's recommendation goes further: all children under 13 in the back seat, and never a rear-facing seat in front of an active passenger airbag.
Is the Michigan law the same as best practice?
No — the law is the legal minimum. NHTSA recommends keeping children in each stage (rear-facing, forward-facing harness, booster) up to the seat's own height and weight limits, which usually lasts longer than the law requires.
All states: car seat laws by state · nearby in the list: Minnesota · Mississippi · Missouri · Montana · Nebraska