If your baby travels in multiple vehicles, you generally have three choices. You can buy a separate car seat for every car, uninstall and reinstall the base every time you switch vehicles, or simply buy an extra base for each car.
Purchasing an extra car seat base is usually the easiest and most budget-friendly option.
We analyzed the top models to find the safest, most user-friendly options on the market. Whether you need something for a compact car or a budget-friendly spare for the grandparents, we have you covered.
- Reduces crash forces by 40%
- Space-saving design
- Seatbelt or latch system installation
- Adjustable to child’s weight
- Correct seat attachment indicators
- Can be installed with a seatbelt
- Graco infant car seats compatible
- Affordable for multiple vehicles
- Seatbelt or lap belt installation
- Correct installation indicators
- Less than 10 sec installation
- Safer than no base car seat
- Easy cleaning
- Three angles of adjustment
- Integrated latch belts
- Adjustable to five positions
- Fits a range of car seats
- Easy to install
- Height adjustable load leg
- Reduces rebound & crash forces
- Correct reclining level indicator
How to Choose a Car Seat Base
Before you buy a second (or third) base, you need to know what features matter most. We evaluated each model against these specific criteria.
Product Reviews
We analyzed safety ratings, installation ease, and parent feedback to select these top seven car seat bases.
Clek Liing Infant Car Seat Base
Best for Narrow Vehicles
The Clek Liing base is a powerhouse of safety features packed into a compact footprint. It works with both the Clek Liing and Liingo infant seats. Its standout feature is the metal load leg, which stabilizes the seat and significantly reduces crash forces.
We love the Rigid LATCH system on this model. The connectors extend directly from the metal frame, which makes clicking it into your car’s anchors incredibly secure.
If your car does not have LATCH anchors, or if you are installing it in the middle seat, the belt-tensioning system is a lifesaver. You simply thread the seatbelt through and close the tensioner arm. It takes almost no physical effort to get a rock-solid install.
The base also offers seven recline positions. This flexibility helps you find the perfect angle to keep your newborn’s airway open, regardless of how sloped your vehicle seats are.
Because it is so narrow, this is the ideal choice for small cars or parents who need to fit three car seats across the back row.
Pros
- Metal load leg absorbs energy during a crash.
- Rigid LATCH makes installation nearly foolproof.
- Narrow design fits well in compact backseats.
Cons
- It has a high price point compared to standard bases.
Product Specs
| Compatible with | Clek Liing or Liingo car seats |
| Size | 22.6 x 13.2 x 8 inches |
| Installation aids | Rigid LATCH and self-tensioning seatbelt system |
| Child Specs | Weight: 4–35 pounds Length: Up to 32 inches |
Our Ratings
Peg Perego Primo Viaggio Nido Car Seat Base
Best Adjustable
The Peg Perego Primo Viaggio Nido base offers excellent protection with its built-in anti-rebound bar and load leg. These two features work together to minimize rotation and movement during a collision, offering you peace of mind.
Adjusting this base is more intuitive than most. Instead of guessing the right angle, you use the “Right Tight” system.
There is a sticker on the base with three specific weight ranges:
- 4 to 11 pounds.
- 12 to 22 pounds.
- 23 to 32 pounds.
You simply turn the knob until the bubble level aligns with your baby’s current weight class. This removes the guesswork and ensures your infant is not sitting too upright, which can be dangerous for head control. It is a fantastic option for parents who want clear visual confirmation that their setup is safe.
Pros
- Knob adjustment makes leveling the seat simple.
- Includes both an anti-rebound bar and a load leg.
- Visual indicators confirm correct installation.
Cons
- The base is quite long physically, so measure your backseat first.
Product Specs
| Compatible with | Primo Viaggio 4/35 and Primo Viaggio 4/35 Nido |
| Size | 21 x 14.75 x 7 inches |
| Installation aids | Twist knob and level |
| Child Specs | Weight: 4–35 pounds Length: Up to 32 inches |
Our Ratings
Graco SnugRide Lite Infant Car Seat Base
Best Durable
The Graco SnugRide Lite is a straightforward, budget-friendly option perfect for families with multiple cars. It uses the classic hook-style LATCH connectors or a standard seat belt install.
You might find that the installation method varies by vehicle. In some cars, the LATCH anchors are easy to reach; in others, the seat belt gives you a tighter fit. We recommend trying both methods to see which one secures the base more firmly in your specific backseat.
This base is compatible with any Graco Click Connect infant car seat. This universality within the brand makes it a favorite for parents who want an affordable spare base for the babysitter or grandparents.
The main drawback is removing the base. The basic LATCH hooks can be difficult to unclip from deep anchors. If you plan to move the base between cars daily, this might frustrate you. However, if it stays in one car permanently, the durability and price are hard to beat.
Pros
- Compatible with all Graco Click Connect infant seats.
- Very affordable price point.
- 4-position adjustable recline foot.
Cons
- LATCH clips are difficult to remove.
- Lacks a seat belt lock-off arm for easier belt installation.
Product Specs
| Compatible with | Any Graco infant car seat model |
| Size | 21 x 14 x 8 inches |
| Installation aids | Level indicator |
| Child Specs | Weight: 4–35 pounds Length: Up to 32 inches |
Our Ratings
Stokke PIPA by Nuna Car Seat Base
Best Non-Vehicle Owners
This base is a collaboration between Stokke and Nuna, and it brings Nuna’s famous ease of use to the table. If you rely on taxis, ride-shares, or rental cars, this base is a game-changer because of its speed.
It utilizes the “True Lock” installation system. Rigid arms unfold from the base and click instantly into the vehicle’s LATCH anchors. Green indicators confirm the connection is secure. You can literally install this base in under ten seconds.
Removing it is just as fast, thanks to release buttons on the arms. This makes it ideal for city living where you might need to grab your gear quickly.
It also features a stability leg to minimize crash forces. While the Stokke PIPA seat can be installed without a base using a seat belt path, using this base provides a significantly higher level of safety and stability.
Pros
- Install takes less than 10 seconds.
- Indicators turn green when safety locks are engaged.
- Stability leg adds extra crash protection.
Cons
- Pricey for a standalone base.
- Only compatible with specific PIPA model seats.
Product Specs
| Compatible with | Stokke PIPA by Nuna Car Seat |
| Size | 25.8 x 13.5 x 8.6 inches |
| Installation aids | Dual bubble level indicators and a “Green for Go” indicator |
| Child Specs | Weight: 4–32 pounds |
Our Ratings
Maxi-Cosi Mico Max 30 Stand-Alone Car Seat Base
Best Easy to Clean
The Maxi-Cosi Mico Max 30 base stands out for its sleek design. It avoids the complex nooks and crannies found on other models, which makes it much easier to wipe down.
This is a huge benefit if you have older siblings in the car. It is surprising how much dirt, sand, and snack crumbs can accumulate in a car seat base when the infant carrier isn’t snapped in. A quick wipe with a damp cloth usually clears this one right up.
It features integrated LATCH connectors that store neatly when not in use. You can also install it using the vehicle seat belt if you prefer.
The base offers three recline angles to help fit the slope of your vehicle’s seat. While it lacks some of the high-end tensioning arms found on pricier models, it is a solid, reliable choice for Maxi-Cosi users.
Pros
- Smooth surfaces are easy to wipe clean.
- Integrated rebound protection.
- One-click LATCH system for easier install.
Cons
- Lacks a built-in bubble level (uses lines on the side).
- Only two locking hooks secure the car seat.
Product Specs
| Compatible with | Mico Max 30, Mico 30, Mico Nxt, and Mico AP car seats |
| Size | 22.8 x 16.8 x 8 inches |
| Installation aids | None |
| Child Specs | Weight: 4–30 pounds Height: 19 to 30 inches |
Our Ratings
Safety 1st OnBoard Adjustable 35 LT Car Seat Base
Best Affordable
Finding the right compatibility information for Safety 1st bases can be confusing. We dug into the manuals and contacted the manufacturer to clarify exactly what fits this base.
The OnBoard Adjustable 35 LT base works with the Safety 1st OnBoard 22, OnBoard 35 LT, Light ‘n Comfy 22, Light ‘n Comfy 35, SureFit 35 LT, and the OnBoard 35 FLX. If you have one of these seats, this is your match.
This is the most budget-friendly option on our list. Despite the low price, it still meets all federal safety standards. It features a 5-position adjustable foot to help you get the right recline angle.
The anchor hooks are basic and can feel a bit flimsy compared to rigid LATCH systems, but they do the job safely. If you need a secondary base for a grandparent’s car that won’t get used daily, this is a cost-effective solution.
Pros
- Extremely affordable.
- 5-position adjustable recline foot.
- Compatible with a wide range of Safety 1st seats.
Cons
- Anchor connectors are basic and harder to unclip.
- No bubble level indicator.
Product Specs
| Compatible with | Safety 1st OnBoard 22, OnBoard 35 LT, Light n Comfy 22, Light n Comfy 35, SureFit 35 LT, OnBoard 35 FLX, and the Cosco Light N Comfy Elite |
| Size | 23.7 x 8.5 x 16 inches |
| Installation aids | None |
| Child Specs | Weight: 4–30 pounds Length: up to 30 inches |
Our Ratings
Cybex Safelock Car Seat Base
Safest Car Seat Base
The Cybex Safelock base is engineered for maximum crash protection. It features an anti-rebound design that limits movement toward the back of the car, plus a height-adjustable load leg.
The load leg transfers crash energy into the floor of the vehicle rather than into your baby. However, you must check your vehicle’s manual before using it. You cannot use a load leg on a floor with hollow storage compartments (like Stow ‘n Go seating) underneath.
Installation is tech-forward with this model. A dual-level indicator helps you find the precise recline angle. It also has a belt tensioning system that acts like a lever, tightening the seat belt for you so you don’t have to wrestle with it.
Indicators turn green to confirm the load leg is touching the floor and the car seat is locked in. It is an expensive investment, but the safety features are top-tier.
Pros
- Load leg significantly reduces crash forces.
- Belt tensioner makes for a tight, secure install.
- Green safety indicators remove guesswork.
Cons
- Expensive price point.
- Load leg is not compatible with vehicle floor storage bins.
Product Specs
| Compatible with | Cybex Anton M |
| Size | 26 x 17.3 x 22.25 inches |
| Installation aids | Dual-level indicators, load leg installation indicator. |
| Child Specs | Weight: 4–35 pounds Length: up to 30 inches |
Our Ratings
| Product | Best | Compatible with | Size | Installation aids | Child Specs |
|---|---|---|---|---|---|
| Clek Liing Infant Car Seat Base | Best for Narrow Vehicles | Clek Liing or Liingo car seats | 22.6 x 13.2 x 8″ | Rigid LATCH & self-tensioning seatbelt system | Wt: 4–35 lbs Lgth: < 32″ |
| Peg Perego Primo Viaggio Nido Car Seat Base | Best Adjustable | Primo Viaggio 4/35 & Primo Viaggio 4/35 Nido | 21 x 14.75 x 7″ | Twist knob & level | Wt: 4–35 lbs Lgth: < 32″ |
| Graco SnugRide Lite Infant Car Seat Base | Best Durable | Any Graco infant car seat model | 21 x 14 x 8″ | Level indicator | Wt: 4–35 lbs Lgth: < 32″ |
| Stokke PIPA by Nuna Car Seat Base | Best Non-Vehicle Owners | Stokke PIPA x Nuna Car Seat | 25.8 x 13.5 x 8.6″ | Dual bubble level indicators & a “Green for Go” indicator | Wt: 4–32 lbs |
| Maxi-Cosi Mico Max 30 Stand-Alone Car Seat Base | Best Easy to Clean | Mico Max 30, Mico 30, Mico Nxt, & Mico AP car seats | 22.8 x 16.8 x 8″ | None | Wt: 4–30 lbs Ht: 19–30″ |
| Safety 1st OnBoard Adjustable 35 LT Car Seat Base | Best Affordable | Safety 1st OnBoard 22, OnBoard 35 LT, Light n Comfy 22, Light n Comfy 35, SureFit 35 LT, OnBoard 35 FLX, & the Cosco Light N Comfy Elite | 23.7 x 8.5 x 16″ | None | Wt: 4–30 lbs Lgth: < 30″ |
| Cybex Safelock Car Seat Base | Safest Car Seat Base | Cybex Anton M | 26 x 17.3 x 22.25″ | Dual-level indicators, load leg installation indicator. | Wt: 4–35 lbs Lgth: < 30″ |
FAQs About Car Seat Bases
These are the most common questions we hear from parents looking to buy a second base.






















