Maxi-Cosi Pria Max All-in-One Convertible Car vs Safety 1st Ellaris 3-in-1 Convertible Car Seat,
Updated July 2026 — Maxi-Cosi Pria Max All-in-One Convertible Car leads on weight and height.
The Maxi-Cosi Pria Max offers superior versatility and comfort, while the Safety 1st Ellaris is a budget-friendly option with a slim design.
Why Maxi-Cosi Pria Max All-in-One Convertible Car is better
Versatility
Pria Max supports a wider weight range from 4-100 lbs.
Comfort
PureCosi fabrics provide a plush experience.
Installation
One-click LATCH connectors simplify setup.
Why Safety 1st Ellaris 3-in-1 Convertible Car Seat, is better
Price
Ellaris is 61% cheaper at $99.99.
Travel-friendly
Compact design is ideal for travel.
Slim Fit
Fits 3 across in most vehicles.
Overall score
Specifications
| Spec | Maxi-Cosi Pria Max All-in-One Convertible Car | Safety 1st Ellaris 3-in-1 Convertible Car Seat, |
|---|---|---|
| Max Weight | 100 lbs | 65 lbs |
| Rear-Facing | 4-40 lbs | 5-30 lbs |
| Forward-Facing | 22-65 lbs | 30-65 lbs |
| Booster Mode | Yes | No |
| Machine Washable | Yes | Yes |
Dimension comparison
Overview of the Maxi-Cosi Pria Max and Safety 1st Ellaris
The Maxi-Cosi Pria Max is priced at $254.00, while the Safety 1st Ellaris is significantly more budget-friendly at $99.99, making it about 61% cheaper than its competitor. Both car seats are designed to adapt as your child grows, but they offer different features and functionalities to meet varying family needs.
Design and Comfort
The Maxi-Cosi Pria Max boasts an all-in-one design that supports children from 4 to 100 lbs. Its PureCosi fabrics are plush and free from wool or added fire retardants, ensuring a comfortable ride. Conversely, the Safety 1st Ellaris is designed with a slim profile that fits three car seats across the back seat in most vehicles, making it ideal for growing families. Both seats feature adjustable headrests, but the Ellaris has a 5-position headrest that enhances comfort as your child grows.
Installation Process
When it comes to installation, the Maxi-Cosi Pria Max features one-click LATCH connectors that simplify the setup process. This makes it easy to secure the car seat in your vehicle quickly. On the other hand, the Safety 1st Ellaris also offers a user-friendly installation with its hook-style LATCH system. Both car seats aim for straightforward installation, but the one-click system of the Pria Max may provide an edge in speed and ease.
Safety Features
Safety is paramount in both car seats, but they achieve it through various means. The Maxi-Cosi Pria Max has been designed with an out-of-the-way harness system that prevents fumbling with straps, while the Safety 1st Ellaris is engineered to meet or exceed federal safety standards, including side impact tests. Both products are committed to keeping your child safe, but the Pria Max’s unique harness system may offer added convenience during buckling.
Versatility in Usage
The Maxi-Cosi Pria Max serves as a rear-facing car seat for infants (4-40 lbs), a forward-facing car seat for toddlers (22-65 lbs), and a high-back booster for older children (40-100 lbs). This versatility is complemented by the Pria Max’s magnetic ClipQuik chest clip that allows for one-handed operation. In comparison, the Safety 1st Ellaris also offers multiple configurations but is limited to rear-facing for infants (5-30 lbs) and toddlers (30-40 lbs) and forward-facing (30-65 lbs). While both seats cater to growing children, the Pria Max provides a broader weight range.
Cleaning and Maintenance
For maintenance, the Maxi-Cosi Pria Max offers removable fabrics that can be machine washed and dried, making it easy to keep clean. The Safety 1st Ellaris also features a machine-washable seat pad, which is dryer-safe, adding to its convenience. Both car seats prioritize cleanliness and ease of use, but the Pria Max’s removable components may provide a slight advantage in terms of fabric care.
Portability and Travel Friendliness
The Safety 1st Ellaris is marketed as travel-friendly, emphasizing its compact design and airplane readiness. This makes it a great choice for families on the go. While the Maxi-Cosi Pria Max does not explicitly target travel, its ease of installation and lightweight design can still make it a feasible option for travel. However, families seeking a specifically travel-oriented car seat might find the Ellaris more appealing.
Price Comparison
The price difference between the two car seats is significant, with the Safety 1st Ellaris retailing at $99.99 compared to the Maxi-Cosi Pria Max at $254.00. This makes the Ellaris about 61% cheaper, which can be a crucial factor for budget-conscious parents. Despite the price disparity, both seats offer valuable features for safety and comfort, but the cost-effectiveness of the Ellaris may attract more families.
Which should you buy?
Choosing between the Maxi-Cosi Pria Max and the Safety 1st Ellaris ultimately depends on your family's needs. If you prioritize versatility and comfort with a higher price point, the Pria Max is a strong contender. However, if budget and a slim design are your main concerns, the Safety 1st Ellaris offers excellent value for money. Consider what features matter most to you, such as installation ease, safety, and adaptability, to make the best choice for your family.

