Evenflo Symphony Sport All-in-One Convertible Alternatives: 6 Similar Picks Compared
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
The Evenflo Symphony Sport All-in-One Convertible Car Seat offers a no-rethread harness and three seating modes for growing children. If you are searching for evenflo symphony sport all in one convertible alternatives, you may want a different width, weight, or feature set. This seat measures 21 inches wide and weighs 19.6 pounds. It supports children from 5 to 100 pounds across rear-facing, forward-facing, and booster stages.
Some buyers prefer a slimmer profile to fit three seats in a back row. Others may want a lower weight for easier installation or a higher rear-facing limit. The alternatives on this list were chosen because their specifications overlap with the original. We compared seat design, dimensions, and weight limits to find similar picks. Each option here provides a distinct advantage, such as the Diono Radian 3R Slim’s 16.9-inch width or the Safety 1st Grow and Go’s 12.5-pound weight. You can review the specs to see which model best matches your vehicle and needs.
Our top pick: Evenflo Symphony Sport All-in-One Car Seat.
Alternatives to the Evenflo Symphony Sport
Diono Radian 3R Slim All-in-One Car Seat
The Diono Radian 3R Slim is the narrowest option at 16.9 inches wide, compared to the Evenflo’s 21-inch width. This slim profile allows you to fit three seats side-by-side in most vehicles, whereas the Evenflo takes up more space. It also features a steel core for added structure. You gain a higher forward-facing weight limit of 65 pounds and a booster limit of 120 pounds. The trade-off is that it is heavier at 23.4 pounds. If your primary goal is maximizing rear-seat space for multiple children, this slim design is the better choice over the wider Evenflo model.
Maxi-Cosi Pria All-in-One
The Maxi-Cosi Pria All-in-One is slightly narrower at 20 inches wide, saving one inch compared to the Evenflo’s 21-inch width. It is also significantly lighter, weighing 16.5 pounds versus the Evenflo’s 19.6 pounds. This makes it easier to move between vehicles. Both seats offer three seating modes and one-hand harness adjustments. However, the Evenflo includes dual built-in cup holders, which the Maxi-Cosi model lacks. If you prioritize a lighter seat and a slightly slimmer profile for tighter car interiors, the Maxi-Cosi is a practical alternative to the heavier, wider Evenflo option.
Maxi-Cosi Petra 3-in-1 Convertible Car Seat
The Maxi-Cosi Petra 3-in-1 is the lightest seat in this comparison at just 14 pounds, significantly lighter than the Evenflo’s 19.6 pounds. It is also narrower at 19.5 inches wide. This makes it a strong candidate for families who frequently remove the seat or have limited rear space. Both seats feature one-hand harness adjustments and three seating modes. The Evenflo distinguishes itself with dual built-in cup holders, a feature absent in the Petra. If you want a very lightweight, narrow seat and do not need built-in storage for snacks, the Maxi-Cosi Petra offers a more compact and portable solution than the Evenflo.
Safety 1st Simple-Click Canopy All-in-One
The Safety 1st Simple-Click Canopy All-in-One shares the same 20-inch width as many competitors, which is still wider than the Diono but slightly narrower than the Evenflo’s 21-inch width. It weighs 14 pounds, making it much lighter than the Evenflo. A key difference is the inclusion of a sun canopy, which the Evenflo does not feature. Both are all-in-one seats with three modes. The Evenflo provides dual cup holders for convenience. If you need a lighter seat and value sun protection for your child during travel, the Safety 1st model is a suitable alternative to the heavier, cup-holder-equipped Evenflo.
Graco Extend2Fit 2-in-1 Convertible Car Seat
The Graco Extend2Fit is a 2-in-1 seat, meaning it does not convert to a booster mode like the Evenflo’s all-in-one design. It is narrower at 19.5 inches and weighs 19 pounds, similar to the Evenflo’s 19.6 pounds. It offers an extended rear-facing limit of 50 pounds, which is less than the Evenflo’s rear-facing capacity. The Evenflo supports children up to 100 pounds in booster mode. If you only need a convertible seat for younger children and do not require the long-term booster functionality, the Graco is a viable option. Otherwise, the Evenflo’s three-mode versatility makes it the more comprehensive choice for growing kids.
Safety 1st Grow and Go All-in-One Car Seat
The Safety 1st Grow and Go All-in-One is the lightest all-in-one seat listed at 12.5 pounds, significantly lighter than the Evenflo’s 19.6 pounds. It is also narrower at 19.3 inches wide. Like the Evenflo, it features three seating modes and built-in cup holders. The Evenflo offers a no-rethread harness system, which simplifies adjustments as your child grows. The Safety 1st model may require rethreading or different adjustment methods. If you want a very lightweight seat with cup holders and do not prioritize the no-rethread harness convenience, the Safety 1st is a cost-effective and portable alternative to the heavier Evenflo model.
Quick picks
Our 7 picks
Evenflo Symphony Sport All-in-One Car Seat
Best for: families needing no-rethread harness adjustments
- Seating Modes
- All-in-One
- Forward-Facing Weight Limit
- 65 lb
- Booster Weight Limit
- 100 lb
- Seat Width
- 21 inches
- Booster Type
- Belt-Positioning
- Orientation
- Rear-Facing
View on Amazon: Evenflo Symphony Sport All-in-One Car Seat Affiliate link
The Evenflo Symphony Sport is an all-in-one convertible car seat that handles rear-facing, forward-facing harness, and booster modes. It supports children from 5 to 100 pounds. The forward-facing harness limit reaches 65 pounds. It features a no-rethread harness and a one-hand adjustable headrest. The seat measures 21 inches wide and weighs 19.6 pounds. It includes dual cup holders for convenience.
Pros
- Supports three modes: rear-facing, forward-facing harness, and booster
- Forward-facing harness tested to 65 lb weight limit
- No-rethread harness straps adjust without uninstalling the seat
- One-hand adjustable headrest grows with your child
- Includes dual built-in cup holders
Cons
- 21-inch width may not fit in smaller vehicles
- 19.6-pound weight is heavier than some alternatives
- Forward-facing harness limit is lower than 65+ lb competitors
Good fit if
- You want a single seat for rear-facing through booster
- You prefer adjusting the harness without removing the seat
- You need built-in cup holders for snacks and drinks
Skip if
- You have a narrow backseat with limited width
- You prioritize a lighter seat for frequent installation
- You need a forward-facing harness limit above 65 lb
Verdict: Evenflo Symphony Sport All-in-One offers a no-rethread harness and three seating modes for growing children. It fits families who value easy harness adjustments and built-in storage over ultra-slim dimensions.
Diono Radian 3R Slim All-in-One Car Seat
Best for: fitting three seats side-by-side in cars
- Seating Modes
- All-in-One
- Rear-Facing Weight Limit
- 50 lb
- Booster Weight Limit
- 120 lb
- Seat Width
- 16.9 inches
- Installation System
- LATCH
- Dimensions
- 16.1 × 16.9 × 28.4 inches
View on Amazon: Diono Radian 3R Slim All-in-One Car Seat Affiliate link
The Diono Radian 3R is a slim all-in-one car seat designed to fit three across in most vehicles. It features a steel core shell and supports rear-facing up to 50 pounds. The seat transitions to a booster mode with a 120-pound limit. It measures 16.9 inches wide and weighs 23.4 pounds. This model includes a comfort travel kit with cup holders. It suits families needing long-term use in compact cars.
Pros
- Fits three-across with a slim 16.9-inch width
- Rear-facing weight limit reaches 50 pounds
- Booster mode supports children up to 120 pounds
- Reinforced steel core shell for structural integrity
- Includes XL cup holders and comfort cushion
Cons
- Heavier at 23.4 pounds than many plastic alternatives
- No mention of included base or carry handle
- Hardware versions vary and cannot be guaranteed
Good fit if
- You need to install three car seats side-by-side
- You want a seat that rear-faces until 50 pounds
- You prefer a steel-reinforced seat structure
Skip if
- You prioritize a lightweight seat under 20 pounds
- You require a specific guaranteed hardware version
- You need a seat with an integrated carry handle
Verdict: Diono Radian 3R Slim All-in-One fits three across in most vehicles thanks to its 16.9-inch width and steel core. It is best for families who need a single seat that rear-faces to 50 pounds and boosts to 120 pounds.
Maxi-Cosi Pria All-in-One
Best for: Families needing a long-lasting convertible seat
- Seating Modes
- All-in-One, 3-in-1
- Rear-Facing Weight Limit
- 40 lb
- Forward-Facing Weight Limit
- 65 lb
- Booster Weight Limit
- 100 lb
- Seat Width
- 20 inches
- Installation System
- LATCH
View on Amazon: Maxi-Cosi Pria All-in-One Affiliate link
The Maxi-Cosi Pria is a 3-in-1 convertible car seat designed for children from 5 to 100 lb. It features a QuikFit headrest and harness system for one-hand height adjustment. The seat includes three reclining positions and plush infant pillows. It measures 20 inches wide and weighs 16.5 pounds. This model suits families seeking a versatile seat that grows with the child without requiring strap rethreading.
Pros
- 3-in-1 design covers rear-facing, forward-facing, and booster stages
- QuikFit system allows one-hand height adjustment
- Three reclining positions for comfort
- Machine-washable and dryer-safe cover
- Meets federal Side Impact standard
Cons
- 20-inch width may limit fit in narrower vehicles
- 16.5-pound weight adds bulk for frequent transport
- No integrated cup holder listed in specifications
Good fit if
- You need a seat that transitions to a booster
- You want to adjust harness height with one hand
- You prefer machine-washable fabrics for easy cleaning
Skip if
- You require a cup holder for drinks
- You need a seat under 15 pounds
- You prefer a narrower seat for tight vehicle rows
Verdict: Maxi-Cosi Pria All-in-One Convertible Car Seat offers a versatile 3-in-1 solution with convenient one-hand harness adjustments. It is ideal for parents who prioritize easy cleaning and long-term usability over compact dimensions.
Maxi-Cosi Petra 3-in-1 Convertible Car Seat
Best for: Families prioritizing easy harness adjustments
- Seating Modes
- 3-in-1
- Rear-Facing Weight Limit
- 40 lb
- Forward-Facing Weight Limit
- 65 lb
- Booster Weight Limit
- 100 lb
- Seat Width
- 19.5 inches
- Installation System
- One-click LATCH
View on Amazon: Maxi-Cosi Petra 3-in-1 Convertible Car Seat Affiliate link
The Maxi-Cosi Petra is a 3-in-1 convertible car seat designed for children from 5 to 100 lb. It features a QuikFit adjustment system that raises the headrest and harness together without rethreading. The seat measures 19.5 inches wide and weighs 14 pounds. It includes plush newborn padding and one-click LATCH connectors for straightforward installation. This model suits families seeking a reliable, easy-to-adjust seat for growing children.
Pros
- QuikFit adjustment system raises headrest and harness simultaneously without rethreading
- One-click LATCH connectors simplify installation
- Plush newborn padding lifts out easily for washing
- Meets federal Side Impact safety standards
Cons
- 19.5-inch width may limit use in smaller vehicles
- Lacks a recline adjustment mechanism in the data
- No remote or app connectivity for monitoring
Good fit if
- You want a seat that adjusts easily as your child grows
- You value straightforward LATCH installation
- You need federal Side Impact compliance
Skip if
- You drive a compact car with narrow rear seats
- You require recline positions for napping
- You prefer smart features like app connectivity
Verdict: The Maxi-Cosi Petra All-in-One Car Seat offers a practical, easy-to-adjust solution for growing children. It fits best in vehicles where its 19.5-inch width is manageable and you prioritize simple harness adjustments over smart features.
Safety 1st Simple-Click Canopy All-in-One
Best for: Fitting three car seats across
- Seating Modes
- 3 in 1
- Rear-Facing Weight Limit
- 40 lbs.
- Forward-Facing Weight Limit
- 65 lbs.
- Booster Weight Limit
- 100 lbs.
- Seat Width
- 20 inches
- Installation System
- LATCH
View on Amazon: Safety 1st Simple-Click Canopy All-in-One Affiliate link
This Safety 1st car seat features a removable sun canopy for shade in rear-facing mode. It fits three across most vehicles at 20 inches wide. The seat supports rear-facing use up to 40 pounds and forward-facing use up to 50 pounds. It transitions to a booster for children up to 100 pounds. The design includes a one-hand adjustable harness and an eight-position headrest.
Pros
- Removable sun canopy provides shade
- Slim 20-inch width fits three across
- One-hand adjustable harness
- Machine-washable seat pad
- Certified for aircraft use
Cons
- Lower forward-facing weight limit of 50 lbs
- No LATCH recline adjustment mentioned
- Basic cup holders included
Good fit if
- You need shade for a rear-facing infant
- You have a wide back seat for three seats
- You want easy harness adjustments
Skip if
- You need a higher forward-facing weight limit
- You prefer a premium fabric finish
- You want integrated cup holders
Verdict: Safety 1st Simple-Click Canopy All-in-One offers a slim profile and sun protection. It suits parents who prioritize vehicle width savings and rear-facing comfort.
Graco Extend2Fit 2-in-1 Convertible Car Seat
Best for: extended rear-facing travel and harness convenience
- Seating Modes
- 2-in-1
- Rear-Facing Weight Limit
- 50 lb
- Forward-Facing Weight Limit
- 65 lb
- Seat Width
- 19.5 inches
- Booster Type
- Harness
- Dimensions
- 21.5 × 19.5 × 23.5 inches
View on Amazon: Graco Extend2Fit 2-in-1 Convertible Car Seat Affiliate link
The Graco Extend2Fit is a 2-in-1 convertible car seat designed to grow with your child. It supports rear-facing use up to 50 lb and forward-facing up to 65 lb. The 4-position extension panel adds 5 inches of legroom, encouraging longer rear-facing travel. It measures 19.5 inches wide and weighs 19 pounds. The Simply Safe Adjust harness allows headrest and harness adjustment in one motion. This seat fits families prioritizing extended rear-facing limits and easy harness adjustments.
Pros
- Rear-facing weight limit reaches 50 lb
- 4-position extension panel provides up to 5 inches of extra legroom
- Simply Safe Adjust harness adjusts headrest and harness together
- Forward-facing limit extends to 65 lb
Cons
- Limited to 2-in-1 configuration without booster mode
- 19.5-inch width may not fit in narrower vehicle rows
- Heavier at 19 pounds compared to some alternatives
Good fit if
- You want to keep your child rear-facing until 50 lb
- You need a harness system that adjusts without rethreading
- Your vehicle has sufficient width for a 19.5-inch seat
Skip if
- You require a 3-in-1 seat with a built-in booster mode
- You need a lighter seat under 15 pounds for frequent transport
- Your vehicle backseat is narrower than 20 inches
Verdict: Graco Extend2Fit 2-in-1 Convertible Car Seat offers a high 50 lb rear-facing limit and convenient harness adjustments, making it a solid choice for parents who prioritize extended rear-facing safety and ease of use.
Safety 1st Grow and Go All-in-One Car Seat
Best for: Families wanting a single long-term seat with cup holders
- Seating Modes
- All-in-One, 3-in-1
- Rear-Facing Weight Limit
- 40 lb
- Forward-Facing Weight Limit
- 65 lb
- Booster Weight Limit
- 100 lb
- Seat Width
- 19.3 inches
- Installation System
- LATCH
View on Amazon: Safety 1st Grow and Go All-in-One Car Seat Affiliate link
The Safety 1st Grow and Go is a 3-in-1 convertible car seat designed to support children from 5 to 100 pounds. It features a QuickFit harness system that raises the headrest and straps together, eliminating the need to rethread. The seat weighs 12.5 pounds and measures 19.3 inches wide. It includes a machine-washable seat pad and two dishwasher-safe cup holders. This model offers side impact protection and meets federal safety standards.
Pros
- 3-in-1 design supports rear-facing, forward-facing, and booster modes
- QuickFit harness system allows one-motion height adjustment without rethreading
- Machine-washable and dryer-safe removable seat pad
- Includes two dishwasher-safe cup holders
Cons
- 19.3-inch width may limit fit in smaller vehicles
- Heavier at 12.5 pounds compared to some competitors
- No mention of a no-rethread harness in the QuickFit description
Good fit if
- You want a single seat that grows from infancy to booster age
- You prefer a removable, machine-washable seat pad for easy cleaning
- You need a seat with integrated cup holders
Skip if
- You require a very narrow seat under 18 inches for tight vehicles
- You prioritize a lightweight seat under 10 pounds for frequent moves
- You want a seat with a documented no-rethread harness system
Verdict: Safety 1st Grow and Go All-in-One is a durable option for parents who want one seat to handle all stages. It suits families who value easy cleaning and built-in cup holders over ultra-compact dimensions.
Specifications side by side
| Spec | Evenflo Symphony Sport All-in-One Car Seat | Diono Radian 3R Slim All-in-One Car Seat | Maxi-Cosi Pria All-in-One | Maxi-Cosi Petra 3-in-1 Convertible Car Seat | Safety 1st Simple-Click Canopy All-in-One | Graco Extend2Fit 2-in-1 Convertible Car Seat | Safety 1st Grow and Go All-in-One Car Seat |
|---|---|---|---|---|---|---|---|
| Seating Modes | All-in-One | All-in-One | All-in-One, 3-in-1 | 3-in-1 | 3 in 1 | 2-in-1 | All-in-One, 3-in-1 |
| Rear-Facing Weight Limit | not stated | 50 lb | 40 lb | 40 lb | 40 lbs. | 50 lb | 40 lb |
| Forward-Facing Weight Limit | 65 lb | not stated | 65 lb | 65 lb | 65 lbs. | 65 lb | 65 lb |
| Booster Weight Limit | 100 lb | 120 lb | 100 lb | 100 lb | 100 lbs. | not stated | 100 lb |
| Seat Width | 21 inches | 16.9 inches | 20 inches | 19.5 inches | 20 inches | 19.5 inches | 19.3 inches |
| Installation System | not stated | LATCH | LATCH | One-click LATCH | LATCH | not stated | LATCH |
| Features | not stated | not stated | not stated | not stated | Canopy | not stated | not stated |
| Convertibility | not stated | not stated | not stated | not stated | not stated | not stated | 3-in-1 |
| Seat Design | All-in-One | All-in-One | All-in-One | All-in-One | All-in-One | 2-in-1 | All-in-One |
| Booster Type | Belt-Positioning | not stated | Harness, Belt-Positioning | Harness, Belt-Positioning | not stated | Harness | Belt-Positioning |
| Orientation | Rear-Facing | not stated | Rear-Facing | Rear-Facing | not stated | not stated | Rear-Facing |
| Dimensions | 21 × 21 × 25.5 inches | 16.1 × 16.9 × 28.4 inches | 26 × 20 × 24.5 inches | 24.4 × 19.5 × 23.3 inches | 24.4 × 20 × 21.8 inches | 21.5 × 19.5 × 23.5 inches | 24 × 19.3 × 24 inches |
| Weight | 19.6 pounds | 23.4 pounds | 16.5 pounds | 14 pounds | 14 pounds | 19 pounds | 12.5 pounds |
| Color | Charcoal Shadow | Blue Razz Ice | Sea Shadow | Sea Shadow | Cliffside | Gotham 2.0 | Green Gables |
| Model | CS300312335 | 50642 | CC414HHH | CC458HHH | CC442CIF | 2216092 | CC409HMX |
| Size | not stated | One Size | not stated | not stated | not stated | 2-in-1 | not stated |
For a related comparison, read audiosource all in one turntable alternatives.
Frequently asked questions
Which convertible car seat is the lightest option available?
The Safety 1st Grow and Go All-in-One is the lightest pick at 12.5 pounds. This makes it easier to move between vehicles compared to heavier models like the Diono Radian 3R Slim, which weighs 23.4 pounds. Its low weight supports frequent transport without adding significant bulk to your luggage or trunk space.
What is the narrowest car seat for fitting three across?
The Diono Radian 3R Slim is the narrowest seat at 16.9 inches wide. This compact width allows you to fit three seats side-by-side in most vehicles. It is significantly slimmer than the Evenflo Symphony Sport, which measures 21 inches wide, making the Diono ideal for families with wider cars or multiple children.
Which seat has the tallest height specification?
The Diono Radian 3R Slim has the tallest height at 28.4 inches. This extra height accommodates taller children in rear-facing mode for a longer period. In contrast, the Evenflo Symphony Sport stands at 25.5 inches, and the Maxi-Cosi Petra is shorter at 23.3 inches, offering less vertical space for growing kids.
Are there any seats with built-in canopies for sun protection?
Yes, the Safety 1st Simple-Click Canopy All-in-One includes a built-in canopy. This feature provides shade and protection from the sun for your child during outdoor activities. Other listed models do not mention a canopy in their specifications, so this seat is the practical choice if you prioritize on-the-go sun shielding.
Which convertible car seat weighs the least?
The Safety 1st Grow and Go All-in-One is the lightest option at 12.5 pounds. This weight is lower than the Maxi-Cosi Petra, which weighs 14 pounds, and the Safety 1st Simple-Click, which also weighs 14 pounds. The lighter design makes it easier to carry or transfer between vehicles compared to heavier all-in-one seats.
What is the widest car seat in this comparison?
The Evenflo Symphony Sport All-in-One is the widest seat at 21 inches. This width is greater than the Maxi-Cosi Pria, which is 20 inches wide, and the Safety 1st Simple-Click, which is also 20 inches wide. You should measure your vehicle’s rear bench to ensure the Evenflo fits comfortably alongside other seats.
Which seat is designed as a 2-in-1 convertible?
The Graco Extend2Fit is the only 2-in-1 convertible car seat on this list. Unlike the other options that are all-in-one seats, the Graco focuses on rear-facing and forward-facing modes. It offers a high 50 lb rear-facing limit and convenient harness adjustments for extended rear-facing travel.