Choose a Nuna PIPA seat if your week includes taxis, rideshares or a second car you would rather not fit with a base: the PIPA urbn installs with rigid latch connectors built into the seat, and no UPPAbaby seat we sell does that without a base. Choose UPPAbaby's Mesa V3 if you drive one car and want the lower system price: a Vista V3 with a Mesa V3 is $1,349.98, against $1,450 for a MIXX Next with a PIPA RX.
Prices update automatically from our store. Specs are Nuna's and UPPAbaby's, from our product listings unless a maker's own product page is named.
A travel system is a stroller plus an infant car seat that clicks onto it. Most Nuna vs UPPAbaby comparisons spend their time on the strollers, but your daily routine is shaped more by the car seat half: how heavy the carrier is when you lift it, whether it needs a base in every car, and how it installs in a car that is not yours. That half is what this guide compares. For the stroller decision itself, see our Vista V3 vs MIXX Next comparison. For whether a bundle saves money over separate pieces, see travel system vs separate.
The five infant seats, by what changes your day
| Nuna PIPA RX | Nuna PIPA Aire RX | Nuna PIPA urbn | UPPAbaby Mesa V3 | UPPAbaby Aria V2 | |
|---|---|---|---|---|---|
| SugarBabies price, seat and base | $550 | $650 | Bundles only, from $800 with a stroller or frame | $349.99 | $449.99 |
| Carrier weight, maker's basis | 7.6 lb without canopy and inserts. 8.6 lb with them | 6.2 lb without canopy and inserts (about 2.2 lb more with them) | 7 lb without canopy and insert. 9 lb with them | 9.9 lb without canopy and insert | 6 lb without canopy and insert |
| Base in the box | RELX: stability leg, anti-rebound panel, rigid latch | RELX: stability leg, anti-rebound panel, rigid latch | None. pipaFIX rigid latch is built into the seat | SMARTSecure base: auto-retracting LATCH, red-to-green tightness indicator. No load leg listed | Base with load leg and Anti-Rebound+ panel, SmartSecure indicators |
| Install without a base | Vehicle seat belt | Vehicle seat belt | Always baseless: rigid latch or seat belt with a European belt path | Vehicle seat belt, European routing | Vehicle seat belt |
| FAA certified for aircraft | Yes | Yes, with or without the base | Yes | Yes, per UPPAbaby's US product page | Yes |
| Second-car base | $200 PIPA extra base or $250 RELX extra base | Same two Nuna bases | None needed, and neither Nuna base fits it | $199.99 extra base for Mesa | $229.99 Aria extra base |
| Strollers it clicks onto | Nuna strollers made for PIPA series seats (the MIXX Next uses the ring adapter in its box). UPPAbaby Vista and Cruz with a listed adapter | Vista V3 and Cruz V3 directly, no adapter. Minu V3 and Ridge with UPPAbaby adapters | |||
Prices update automatically from our store. Specs: each seat's listing on our store (the PIPA urbn from our MIXX Next + PIPA urbn and TRVL LX + PIPA urbn bundle listings), plus UPPAbaby's US Mesa V3 page for FAA certification. Weights use the basis each maker states, so check the basis before comparing two numbers. Extra-base fit: Nuna's base listings exclude the PIPA urbn.
Match the seat to your week
One car, driven every day
This is the routine where the base matters least, because it stays put, and where price separates the brands most. A Vista V3 with a Mesa V3 bought as separate listings is $1,349.98 in most colors, and a Cruz V3 with a Mesa V3 is $1,249.98. The MIXX Next + PIPA RX travel system is $1,450. If you want a load leg on the base you use every day, look at the PIPA RX or Aire RX on the RELX base, or UPPAbaby's Aria V2; the Mesa V3 listing does not list one.
Two cars
Here the PIPA urbn changes the math, because it needs no base in either car. With a full-size stroller included, at today's prices:
- MIXX Next + PIPA urbn: $1,300, nothing else to buy for the second car.
- Vista V3 + Mesa V3 + a second Mesa base: $1,549.97 in most colors.
- MIXX Next + PIPA RX + a second PIPA extra base: $1,650.
Each total adds the listings linked in that line. Prices update automatically from our store.
The trade with the urbn is that every install is a full install. You connect the rigid latch, or route the belt, each time, where a base lets you click the carrier in. If you would rather click in at both cars, a second base is the cleaner setup.
Taxis, rideshares, and other people's cars
All five seats can ride without a base. The difference is how. The PIPA urbn can use the car's lower anchors through its own rigid latch, or a seat belt. The Mesa V3 uses European belt routing, and the PIPA RX, PIPA Aire RX and Aria V2 install with the vehicle seat belt. If you will install in a different car most days, practice the belt install at home first, with the manual open. NHTSA's advice is to follow both your car seat manual and your vehicle owner's manual (NHTSA car seat guidance).
Stairs, a walk-up, or a lot of carrying
Compare bare carriers on the same basis. Without canopy and inserts, the Aria V2 is 6 lb, the PIPA Aire RX 6.2 lb, the PIPA urbn 7 lb, the PIPA RX 7.6 lb and the Mesa V3 9.9 lb, so the Mesa V3 carrier is about 3.9 lb heavier than the Aria V2 before your baby is in it. If carrying is the main concern, the Aria V2 and Aire RX are the two to compare.
A second baby inside two or three years
That is a stroller question, not a car seat one. The Vista V3 takes a second seat and the MIXX Next does not. We price both routes in our Vista V3 vs MIXX Next comparison.
Who each seat is not for
- PIPA RX, not for: UPPAbaby stroller owners who want no extra parts. A PIPA needs an adapter on a Vista or Cruz, where a Mesa V3 or Aria V2 clicks straight on.
- PIPA Aire RX, not for: a budget build. It is the priciest seat-and-base listing in this table, $300.01 more than the Mesa V3.
- PIPA urbn, not for: anyone who wants the seat by itself or a click-in base in the main car. We sell it only inside bundles, and Nuna lists it as incompatible with the PIPA series and RELX bases.
- Mesa V3, not for: anyone who carries the seat a lot or wants a load leg. It is the heaviest bare carrier here, and its listing names a 4th anti-rebound handle position rather than a load leg.
- Aria V2, not for: a tall baby you want in the carrier as long as possible. Its listing caps height at 30 in, against 32 in on the Mesa V3, and it costs $100 more.
Mixing brands
You can put a Nuna PIPA on an UPPAbaby Vista or Cruz with an adapter that names your exact seat. UPPAbaby seats are not listed for Nuna strollers. Which adapter fits which pairing, with prices, is in our cross-brand compatibility chart, so we will not repeat it here. For more on choosing between the four PIPA seats, read which Nuna car seat is best.
Nuna vs UPPAbaby car seat questions
Which infant carrier is lighter, Nuna or UPPAbaby?
Without canopy and inserts, UPPAbaby's Aria V2 is 6 lb and Nuna's PIPA Aire RX is 6.2 lb, the two lightest we sell from these brands. UPPAbaby's Mesa V3 is the heaviest at 9.9 lb on the same basis.
Can a Nuna or UPPAbaby infant seat ride in an Uber without the base?
Yes. The PIPA urbn installs without a base by rigid latch or seat belt, the PIPA RX, PIPA Aire RX and Aria V2 install with the vehicle seat belt, and the Mesa V3 uses European belt routing. Follow your seat's manual for the install.
Which Nuna and UPPAbaby bases have a load leg?
Nuna's RELX base, sold with the PIPA RX and PIPA Aire RX, has a stability leg, and UPPAbaby's Aria V2 base has a load leg. Our Mesa V3 listing does not list a load leg. The PIPA urbn has no base.
Do UPPAbaby car seats fit Nuna strollers?
Not according to our listings: no Nuna stroller we carry names an UPPAbaby seat. The reverse works: a Nuna PIPA fits a Vista or Cruz with an adapter that lists your seat.
Can I return a car seat or travel system?
Our refund and return policy has the return terms, and shipping information covers delivery for car seats and strollers alike.
Ready to build yours? Shop Nuna, UPPAbaby, or all infant car seats.
Educational information only. This guide is for general education. It is not professional, medical, legal, or safety advice, and it does not create any advisory or professional relationship between you and SugarBabies. You are responsible for the safe selection, installation, and use of any car seat.
How a car seat fits and installs depends on your exact vehicle (its model year, trim, and seating configuration) and your exact car seat model. The instructions that came with your car seat and your vehicle owner’s manual always control. If anything in this article ever conflicts with those instructions, or with current guidance from the National Highway Traffic Safety Administration (NHTSA), follow the manufacturer instructions, your vehicle manual, and NHTSA, not this article.
Our information is compiled from manufacturer specifications, product manuals, and NHTSA guidance that we believe to be reliable, and we provide all of it “as is.” Specifications, model years, and vehicle configurations change, and we do not guarantee the accuracy, completeness, or current status of any of it.
To the fullest extent permitted by applicable law, we disclaim all warranties, express or implied, including the implied warranties of merchantability and fitness for a particular purpose, and SugarBabies and its owners, employees, and affiliates are not liable for any direct, indirect, incidental, or consequential injury, loss, or damage arising from the use of or reliance on this article. Nothing in this disclaimer limits any liability that cannot be limited under Washington law. Some products we mention or link to are sold by SugarBabies, and we may earn money when you buy them.
