Safe seats: Record 27 new boosters earn highest IIHS rating
November 8, 2014
The ranks of top-rated booster seats continue to grow as manufacturers design models to earn high marks in the Institute's annual booster seat evaluations, plus offer the style and convenience parents look for when it's time to pick a safe seat for their booster-age children.
Among the 41 models new for 2014, there are 27 BEST BET seats — more than in any prior year — and three GOOD BETs. Eight boosters are in a category the Institute calls "Check Fit," and there are three new models that the Institute doesn't recommend using as boosters. Prices for BEST BET boosters start around $25 and go up to about $370, depending on features, and several models are LATCH compatible.
Boosters earn a rating of BEST BET, GOOD BET, Check Fit or Not Recommended, based on a protocol that involves measuring how three-point lap and shoulder belts fit a child-size test dummy seated in the booster on a stationary test fixture. Measurements are taken under four conditions spanning the range of safety belt configurations in passenger vehicles. The evaluations focus on belt fit and don't involve crash tests.
A BEST BET booster correctly positions belts on a typical 4-to-8-year-old child in almost any car, minivan or SUV. A GOOD BET provides acceptable belt fit in most vehicles. Correct belt fit means that the lap belt lies flat across a child's upper thighs, and the shoulder belt crosses snugly over the middle of the shoulder.
The Check Fit designation means that the booster may provide good belt fit for some children in some vehicles, but not as many as boosters that earn either of the top two ratings. Belt fit can vary depending on child size and vehicle model. Before buying these boosters, parents should try them out to see if they properly position safety belts on their children in the vehicles they will ride in.
In addition to information on models new this year, IIHS maintains ratingsratings for older booster seats still on the market. Altogether, IIHS has ratings for 69 BEST BET and eight GOOD BET boosters, 35 Check Fit boosters and five Not Recommended seats for 2014.
"Buying a booster seat can be confusing," says Jessica Jermakian, a senior research scientist at the Institute and an expert on child passenger safety. "There are lots of models and features to choose from. Until we started our ratings six years ago, parents couldn't be sure that the booster they'd put in their shopping cart would actually provide the right belt fit for their child once they unpacked the seat and installed it in the family vehicle. Our ratings take the guesswork out of purchasing a booster seat."
She notes that most new models in recent years earn a BEST BET or GOOD BET rating, and many manufacturers check in with the Institute during the development process to gauge how their designs will rate.
Missing the mark
In a setback this year, three new boosters landed in the Not Recommended category. They are the highback Diono Olympia and Diono Pacifica and the Kids Embrace Batman No Back Booster.
Shoulder belt fit is the issue with both Diono models. Highback boosters have guides to route lap and shoulder belts and can offer some head support. The shoulder belt guides on the Olympia and Pacifica put the belt in a position that touches the face in several safety belt configurations instead of placing the belt across the center of the chest. The guides aren't adjustable. In contrast, another new Diono model, the Rainier, earns a GOOD BET rating when used as a highback booster. The Rainier's adjustable headrest allows parents to change the position of the shoulder belt guide to achieve acceptable shoulder belt fit.
Lap belt fit is the problem with the Batman No Back booster. The armrests that serve as the lap belt path keep the belt too far out on the thighs. A better choice for kids who dig superheroes would be a highback model from Kids Embrace, the Teenage Mutant Ninja Turtle booster, which is a BEST BET. Kids Embrace also sells a highback Batman and a highback Spider-Man booster, which would rate the same as the highback Ninja Turtle. Other BEST BET backless-only options are the Baby Trend Hybrid No Back and the Diono Solana.
The Institute continues to advise consumers to avoid using as boosters two carry-over models from Dorel Juvenile, the Safety 1st All-in-One and Safety 1st Alpha Omega Elite. These seats have been on the Not Recommended list since 2009 because they don't provide proper belt fit. They leave the lap belt too high on the abdomen and the shoulder belt too far out on the shoulder.
As with any child safety seat, consumers should be on the lookout for manufacturer recalls. The Institute includes recall information for booster seats with its ratingsratings.
Three redesigned highback boosters from Britax made the BEST BET list this year. They are the Frontier 90, Pinnacle 90 and Pioneer 70. Last year's models were designated as Check Fit boosters, and Britax has discontinued them. The new models have an improved armrest design that puts the lap belt in the correct position for proper fit. In addition to highback boosters, these combination seats can be used as a harness-equipped forward-facing child restraint. Parents in the market for a BEST BET combination seat could consider any of these Britax seats, plus the Eddie Bauer Deluxe Highback 65 Booster.
Some seats show up twice in the ratings list. That's because they can be converted for use as either a highback booster or a backless booster. The Institute treats these as two distinct seats for ratings purposes. Consumers should pay attention to each rating and consider how they will use the seats in their vehicles.
Ratings for dual-use models can vary by how they are used. For example, the Safety 1st Store 'n Go is a BEST BET when used as highback booster, but it is designated a Check Fit when used as a backless booster. For the right shoulder belt fit in backless mode, the booster needs an accessory belt clip, which isn't included in the box and must be ordered separately. Safety 1st also sells a backless-only version of the Store 'n Go. The Store 'n Go No-Back Booster comes with a shoulder belt clip that puts the belt in the right place for proper fit, making it a BEST BET. Backless models usually need a plastic clip to properly position shoulder belts.
Another example is the Maxi-Cosi Rodi AP. The seat is a BEST BET when used as a highback booster and designated a Check Fit when used as a backless booster.
For new parents looking for the convenience of a single child restraint that will take their baby through the grade school years, there are some good options on the 2014 ratings list.
The Graco 4Ever All-in-1 and the Graco Milestone All-in-1, both BEST BETs, also can be used as rear-facing and forward-facing child restraints. The 4Ever accommodates infants from 4 pounds as a rear-facing seat all the way up to 120 pounds when used with older children as a backless booster. The Milestone can be used as a rear-facing child restraint for babies weighing 5 to 40 pounds, forward-facing for children 20 to 65 pounds, and as a highback booster for kids up to 100 pounds.
More LATCH-compatible boosters
This year 15 of the newly introduced models use LATCH to secure the booster to the vehicle for use when a child is in the booster. LATCH, or Lower Anchors and Tethers for Children, is a system intended to make it easier to attach child restraints securely. Typically, LATCH has only been used with rear-facing or forward-facing child restraints. With or without LATCH, a booster provides significant safety benefits.
With all boosters, the job of restraining a child is done by the vehicle safety belts, not the booster. Consumers should check their seat instruction manual to see when the manufacturer recommends using LATCH. Some recommend using the attachment system only when the booster is unoccupied.
Among BEST BETs, these 2014 models specify using LATCH when the booster is occupied: Britax Frontier 90, Pinnacle 90 and Pioneer 70; Cybex Solution X-Fix; Diono Solana; Graco 4Ever All-in-1 and Milestone All-in-1; Evenflo Chase and Symphony 65; Kids Embrace Teenage Mutant Ninja Turtle; Maxi-Cosi RodiFix and Peg Perego Viaggio HBB 120. Among GOOD BETs, the Baby Trend Hybrid 3-in-1, Cybex Solution Q-Fix and Diono Ranier also have LATCH for use when the booster is occupied.