Latest Which? best buys:
Babies from birth to 13kg (birth to around 18 months)
The Britax Cosy Tot Isofix, £180 from Mothercare, is the first Isofix seat for babies in the UK. It has a rear leg support that rests on the car floor (see features explained) so this seat won?t fit in all cars, even if they have Isofix fittings. Check whether it?s suitable for your car before buying one.
Close on its heels is the Britax Cosy Tot Premium, £90 from Mothercare, which is the non-Isofix version of the Cosy Tot. It has very clear instructions and offers excellent head support.
The Chicco Autofix Plus is only available as part of a travel system (with a pushchair/pram) for around £385 from independent stores. It did well in most of our tests but it wasn?t as easy to route the belt through as on some of the others.
Two other models follow on their heels.
The Maxi-Cosi Cabrio, £80 from Halfords, is easy to use and does well in all our crash tests.
The Mothercare Travel Tot, * £40 from Mothercare, does well in our crash tests and is quite easy to use. Like the Chicco, it is slightly more difficult to feed the belt through this seat than on some others.
- Mothercare also sells the Travel Tot Deluxe, which is a seat of the same basic design, but which comes with a higher specification trim and costs more.
Children from 9kg to 18kg (from around nine months to about four years old)
For this group of seats it?s been more difficult choosing Best Buys, as the standards in this group are generally still not as high as for other weight groups.
The Britax Duo Plus Isofix, £180 from Mothercare and Toys R Us, is by far the best seat in this weight category when used in Isofix mode. When fitted using belts its performance is acceptable but not up to Best Buy standards.
So if your car doesn?t have Isofix fittings, the Mamas & Papas Pro Tec, £130 from independent stores, is the best of the belted options in this group. It fits in most cars. Safety is on a par with the Duo Plus, but it?s not quite as easy to use.
Children from 15kg to 36kg (from about four years to 11 years)
Seats in this category don?t have integral harnesses but use the car?s own belt to secure both the seat and the child.
The Concord Lift Protect, £65 from independent stores, is easy to install and gives excellent head and leg support.
The Concord Lift Evo, £80 from independent stores, is very easy to use and gives children a good view.
The Maxi-Cosi Rodi XP, £85 from Halfords, was our best seat in this category in 2004, and is still competitive. It?s very easy to use and does well in our safety tests.
The newcomer Britax Hi-Liner, widely available at £55, is very easy to use and matches the Maxi-Cosi and Concords for safety.
The Britax Kid, £70 from Toys R Us, remains a good choice, and is the most comfortable seat in this group.
High-street prices quoted are the cheapest we found in our survey of retailers.
Updated June 2005