Skip advert
Advertisement

Graco Affix i-Size R129 booster car seat review

The Graco Affix i-Size R129 is a great all round booster car seat at an even greater price

Verdict

Graco’s first highback booster with Isofix connectors is a hit. It doesn’t quite have the premium feel of some rivals, but its price tag more than makes up for it. It’s a quality seat that's comfortable and safe. 

  • Price: Around £65
  • Contact: Graco

When searching for child booster seats, it can be tempting to look at the price tag before anything else. Let’s be honest, having children isn’t cheap, so saving the pennies where you can becomes vital. Head to the website of any major child car seat retailer and sort by price, and it’s likely the Graco Affix i-Size R129 will be one of the first ones you see, but does it offer value for money?

Advertisement - Article continues below

Graco is a household name in this area, producing everything from car seats, carrycots, strollers and more, but the Affix i-Size R129 sees it step into new ground. It’s the brand’s first ever highback booster seat to feature Isofix connectors - a staple in more expensive seats, but often the first thing to get the chop on cheaper models. It makes installation incredibly easy and ensures the seat stays in place when the little ones aren’t sat in the car. The seat is essentially the older Affix R44 that’s been adapted to R129 safety standards, meaning improved head and neck protection and compatibility with any i-Size approved car.  

During our two-week test, we found the Affix i-Size easy to use and our little tester was very happy. She never complained about being uncomfortable on longer trips, and loved the retractable cup holders on each side - allowing her to keep her drink close by.

Yes the material isn’t quite as premium as more expensive models, but some of these rivals can cost almost three times the price. That’s a lot more to pay for a seat that essentially does the same job. There’s plenty of ventilation to keep your child cool whatever the weather and the adjustable headrest allows the seat to grow with your child right up until they are 12 years old (or 150cm).

The only real niggle we had during our time with the seat was the seatbelt regularly coming out from the holder that guides the height. It needed to be reattached almost each time we clipped it in, but it’s easy to do and is a minor inconvenience. It certainly isn’t a big enough issue to cause any problems - and, if it does, simply just take another look at the price tag.

Buy the Graco Affix i-Size R129 from Amazon

Skip advert
Advertisement
Web producer

Pete has over 20 years journalistic experience. Having previously worked for Ladbrokes and the Racing Post, he switched from sports writing to automotive journalism when joining Auto Express in 2015.

New & used car deals

Volkswagen Tiguan

Volkswagen Tiguan

RRP £38,050Avg. savings £3,637 off RRP*Used from £24,899
Volkswagen Polo

Volkswagen Polo

RRP £15,270Avg. savings £3,278 off RRP*Used from £7,500
Toyota Yaris Cross
Renault Clio

Renault Clio

RRP £16,175Avg. savings £2,696 off RRP*Used from £7,500
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Every new EV ranked 161 to 1: the complete guide to UK electric cars
161 best & worst UK EVs rated - header image

Every new EV ranked 161 to 1: the complete guide to UK electric cars

There are 161 different electric cars on sale in the UK and here’s the complete guide to every one of them…
Features
28 Aug 2026
New Mercedes-AMG CLA 45: faster and more powerful than a BMW M3, but £25k less
Mercedes-AMG CLA 45 - front

New Mercedes-AMG CLA 45: faster and more powerful than a BMW M3, but £25k less

The 671bhp CLA 45 is hypercar-quick, while sounding and shaking like its got an angry four-cylinder under the bonnet
News
28 Aug 2026
Updated Renault 5 offers more range, more Google tech and even more style
2026 Renault 5 update - front overhead

Updated Renault 5 offers more range, more Google tech and even more style

Revised aero, new LFP battery chemistry and more colour options added to award-winning electric supermini
News
25 Aug 2026