Evenflo CS500312203 Car Seat
- Car_seat
- Polyurethane Foam
- 100 pounds
- 9.6 pounds
- More reviewed than 78%
A latch or seat belt booster car seat rated to 100 pounds, suited to toddlers rather than infants.
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How it ranks among the 125 car_seats we track
4.5★ across 2,921 Amazon ratings, Bayesian-smoothed toward the category average.
2,921 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
500+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 125 car_seats we track - how the scorecard works · full car_seats data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Evenflo CS500312203 is a booster car seat rated for children up to 100 pounds, installed with either the vehicle's latch anchors or its seat belt, aimed at the toddler stage rather than infants.
A 100 pound weight capacity puts this seat well past the infant and convertible stages, into booster territory meant to carry a child through much of early childhood. The dual latch and seat belt installation options give some flexibility depending on the vehicle.
- 100 pound weight capacity
- Latch and seat belt installation
- Booster car seat orientation
- 4.5 rating across 2,921 ratings
Who it's for
Parents moving a toddler into a booster-style seat who want the option of either latch or seat belt installation. Not the right pick for a newborn or infant, given the toddler age range and booster orientation.
Strengths and trade-offs
Drawn from this product's published specifications.
- 100 pound weight capacity covers an extended toddler range
- Installs with either latch or seat belt
- Booster orientation is not suited to infants
Performance notes
The polyurethane foam lining is the main energy-absorbing layer, and the booster orientation means the seat works with the vehicle's own seat belt path across the child rather than a built-in harness at higher weights.
Specifications
| Brand | Evenflo |
|---|---|
| Model | CS500312203 |
| Dimensions & fit | |
| Weight Capacity | 100 pounds |
| Item Weight | 9.6 pounds |
| Dimensions | 17 × 19 × 27.5 inches |
| Orientation | Booster Car Seat |
| Capacity & performance | |
| Age Range | Toddler |
| Construction & materials | |
| Material | Polyurethane Foam |
| Compatibility & installation | |
| Installation | Latch, Seat Belt |
Other Evenflo car_seats
How it compares
This product against the closest alternatives we track in car_seats.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Evenflo CS500312203 Car SeatThis product | 4.5 / 5 | 2,921 | 4.3 / 5 |
| Graco TurboBooster 2.0 Backless Booster Car SeatGraco | 4.8 / 5 | 11,473 | 4.7 / 5 |
| Cosco BC030BJDZ Car SeatCosco | 4.7 / 5 | 14,861 | 4.6 / 5 |
| Safety CC409HMO Car SeatSafety | 4.7 / 5 | 34,724 | 4.6 / 5 |
| Doona SP101-10-033-003 Car SeatDoona | 4.8 / 5 | 15,335 | 4.6 / 5 |
Similar car_seats from other brands
Questions about the Evenflo CS500312203
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What is the weight limit for the Evenflo CS500312203?
100 pounds.
How does the Evenflo CS500312203 install?
With either the vehicle's latch anchors or its seat belt.
Is the Evenflo CS500312203 suitable for infants?
No, it is a booster seat for the toddler age range, not an infant seat.