Evenflo All4Stages Slim 4-in-1 Convertible Car Seat vs Safety 1st Convertible Car Seat, Convert from Rear
Updated August 2026 — Evenflo All4Stages Slim 4-in-1 Convertible Car Seat leads on recline and weight.
The Evenflo All4Stages offers more versatility and ease of installation, making it the better choice for long-term use. However, the Safety 1st is a more budget-friendly option.
Why Evenflo All4Stages Slim 4-in-1 Convertible Car Seat is better
Modes
Evenflo offers four modes compared to three for Safety 1st.
Installation
Evenflo claims easier installation with SecureTight system.
Recline Options
Evenflo has more recline options for comfort.
Why Safety 1st Convertible Car Seat, Convert from Rear is better
Price
Safety 1st is significantly cheaper.
Cleaning
Safety 1st has machine-washable seat pad.
Comfort Insert
Safety 1st includes a memory-foam infant insert.
Overall score
Specifications
| Spec | Evenflo All4Stages Slim 4-in-1 Convertible Car Seat | Safety 1st Convertible Car Seat, Convert from Rear |
|---|---|---|
| Modes | 4-in-1 | 3-in-1 |
| Installation | SecureTight | Simple |
| Recline Options | 6 | 3 |
| Safety Testing | Extensive | Standard |
| Price | $209.00 | $154.30 |
Dimension comparison
Overview
The Evenflo All4Stages Slim 4-in-1 Convertible Car Seat is priced at $209.00, while the Safety 1st Convertible Car Seat is about 26% cheaper at $154.30. Both car seats cater to a wide age range, making them versatile options for parents. However, they differ in design features and installation ease, which may influence your decision.
Design and Size
The Evenflo All4Stages has a streamlined design measuring 16.9 inches wide, allowing for three car seats to fit comfortably across the backseat. Meanwhile, the Safety 1st Convertible Car Seat is slightly wider at 17 inches, yet still designed to accommodate three seats without compromising comfort. Both designs aim to offer space-saving solutions for families, but the Evenflo's slightly narrower profile provides a marginal advantage for tighter spaces.
Modes of Use
Both car seats offer multiple modes to grow with your child. The Evenflo All4Stages provides four modes: Rear-Facing (4-40 lbs), Forward-Facing (30-65 lbs), High-Back Booster (40-100 lbs), and No-Back Booster (40-120 lbs). On the other hand, the Safety 1st Convertible Car Seat features three modes: Rear-Facing (5-40 lbs), Forward-Facing (30-65 lbs), and Belt-Positioning Booster (40-100 lbs). This gives the Evenflo a slight edge in terms of longevity and versatility, as it can be used for a longer period.
Installation and Adjustment
The Evenflo All4Stages claims to achieve secure installation with up to 50% less effort thanks to its SecureTight system. It also includes a 12-position headrest and a no-rethread harness for easy adjustment. Conversely, the Safety 1st Convertible Car Seat boasts a simple installation process with a 9-position headrest that adjusts with one hand and a hassle-free harness system. While both seats prioritize ease of use, the Evenflo’s installation efficiency stands out with its specific claim of reduced effort.
Comfort Features
Comfort is crucial for long rides, and both car seats offer features designed to keep children cozy. The Evenflo All4Stages includes four rear-facing recline options and two forward-facing recline options, enhancing comfort and safety. The Safety 1st Convertible Car Seat comes with a soft, memory-foam infant insert, ensuring younger passengers remain comfortable. The Evenflo’s additional recline options may provide a more customizable experience for parents, particularly for infants.
Cleaning and Maintenance
In terms of maintenance, the Safety 1st Convertible Car Seat is equipped with two removable, dishwasher-safe cup holders and a machine-washable seat pad, making cleanup straightforward after messy rides. The Evenflo All4Stages also features two removable cup holders, but it does not specify whether the seat pad is machine-washable. The Safety 1st seat may offer a more convenient cleaning experience, especially for parents dealing with spills and messes.
Safety Standards
Both car seats exceed all applicable Federal Safety Standards, ensuring a high level of safety for your child. The Evenflo All4Stages emphasizes structural integrity testing, rollover testing, and temperature testing, highlighting its commitment to safety. While the Safety 1st Convertible Car Seat also meets Federal standards, the Evenflo’s additional testing claims may instill extra confidence in parents concerned about safety.
Price Comparison
The Evenflo All4Stages is priced at $209.00, while the Safety 1st Convertible Car Seat is available for $154.30. This price difference of about $54.70 makes the Safety 1st model a more budget-friendly option for families. However, parents should weigh this cost against the additional features and longevity offered by the Evenflo. The decision may ultimately depend on your specific needs and budget.
Which should you buy?
Ultimately, choosing between the Evenflo All4Stages Slim 4-in-1 Convertible Car Seat and the Safety 1st Convertible Car Seat depends on your priorities. If you're looking for a budget-friendly option with essential features, the Safety 1st model is a solid choice at $154.30. However, if you prefer a more versatile car seat capable of accommodating your child for a longer period with enhanced ease of installation, the Evenflo at $209.00 may be worth the investment.

