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Car seats compared on listed specifications, with any recalls pulled straight from GOV.UK.
Buying guide · 9 min read
How to choose a car seat: i-Size, R129, rear-facing and ISOFIX
The UK rules, i-Size (R129) explained, why rear-facing matters and how to check a seat fits your car.
Read the guide →Compare 38 i-Size car seats
Specs come from each maker's page or the Amazon.co.uk listing, and were last checked on 30 October 2026. We don't show prices: they change often, so use the button to see today's price and stock. Tiers (budget, mid-range, premium) are our own rough grouping.
| Product | Type | Standard | Height range | Weight range | ISOFIX | Rear-facing | Rotates | Seat weight | Buy |
|---|---|---|---|---|---|---|---|---|---|
| Maxi-Cosi CabrioFix i-Size BudgetInfant carrier, roughly birth to 12 months.Maker's page for Maxi-Cosi CabrioFix i-Size (opens in a new tab) · checked 30 October 2026 | Infant carrier | i-Size (R129) | 40–75 cm | 0–12 kg | YesFits with the seat belt, or with an ISOFIX base (sold separately) | Rear-facing only (to 75 cm / 12 kg) | Not listed | 3.2 kg | AdCheck price on Amazon |
| Maxi-Cosi Pebble 360 Mid-rangeOne-hand 360° rotation works with the base.Maker's page for Maxi-Cosi Pebble 360 (opens in a new tab) · checked 30 October 2026 | Infant carrier | i-Size (R129) | 40–83 cm | 0–13 kg | YesFamilyFix 360 ISOFIX base (sold separately), or seat belt | Rear-facing only (to 83 cm / 13 kg) | Yes | 4.3 kg | AdCheck price on Amazon |
| Maxi-Cosi Pearl 360 PremiumBirth use needs an inlay (sold separately); the page says 3 months to 4 years otherwise. Maxi-Cosi lists a rear-facing lock to 15 months; a rear-facing maximum is not stated.Maker's page for Maxi-Cosi Pearl 360 (opens in a new tab) · checked 30 October 2026 | 360 / rotating | i-Size (R129) | 61–105 cm | 0–17.4 kg | YesISOFIX base required (sold separately); no seat-belt fitting | Not listed | Yes | 7.45 kg | AdCheck price on Amazon |
| Maxi-Cosi Titan S i-Size Mid-rangeA bigger-child seat that runs from toddler to booster age.Maker's page for Maxi-Cosi Titan S i-Size (opens in a new tab) · checked 30 October 2026 | Toddler to booster | i-Size (R129) | 76–150 cm | 9–36 kg | YesISOFIX connectors attached to the seat | Forward-facing only | No | 11 kg | AdCheck price on Amazon |
| Joie i-Pivot 360 PremiumForward-facing allowed from 15 months and 76 cm (Joie).Maker's page for Joie i-Pivot 360 (opens in a new tab) · checked 30 October 2026 | 360 / rotating | i-Size (R129) | 40–105 cm | Not listed | YesISOFIX with load leg | To 105 cm / 21 kg | Yes | 10.97 kg | AdCheck price on Amazon |
| Britax Römer KIDFIX M i-SIZE BudgetFor ages about 3.5–12 years. The Britax page we could read did not list the ISOFIX option, weight range or seat weight, so they are shown as Not listed.Maker's page for Britax Römer KIDFIX M i-SIZE (opens in a new tab) · checked 30 October 2026 | High-back booster | i-Size (R129) | 100–150 cm | Not listed | Not listed | Forward-facing high-back booster | No | Not listed | AdCheck price on Amazon |
| Cybex Sirona G i-Size Comfort PremiumSpecs from the Amazon.co.uk listing. Rated "good" by Stiftung Warentest 06/2024 according to the listing. Seat weight is the seat without the base.Amazon listing for Cybex Sirona G i-Size Comfort (opens in a new tab) · checked 30 October 2026 | 360 / rotating | i-Size (R129) | 61–105 cm | Up to 19 kg | YesBase G ISOFIX base required (sold separately) | Rear-facing only (to 105 cm / 19 kg) | Yes | 8.1 kg | AdCheck price on Amazon |
| Cybex Pallas G3 i-Size Plus Mid-rangeSpecs from the Amazon.co.uk listing. Impact shield, so it works as a harness seat for toddlers and a high-back booster later.Amazon listing for Cybex Pallas G3 i-Size Plus (opens in a new tab) · checked 30 October 2026 | Toddler to booster | i-Size (R129) | 76–150 cm | 9–50 kg | YesISOFIX and top tether | Forward-facing only (from 76 cm) | No | 8.9 kg | AdCheck price on Amazon |
| Cybex Solution G2 Comfort Mid-rangeSpecs from the Amazon.co.uk listing. The listing gives the standard as UN R129/04. Folds to 59 × 26 × 55 cm.Amazon listing for Cybex Solution G2 Comfort (opens in a new tab) · checked 30 October 2026 | High-back booster | i-Size (R129) | 100–150 cm | 15–50 kg | YesFits with or without ISOFIX | Forward-facing high-back booster | No | 5.8 kg | AdCheck price on Amazon |
| Britax Römer Dualfix M i-Size Mid-rangeSpecs from the Amazon.co.uk listing. Rotates 360° between rear- and forward-facing. The listing showed "Only 2 left in stock", so stock may be limited.Amazon listing for Britax Römer Dualfix M i-Size (opens in a new tab) · checked 30 October 2026 | 360 / rotating | i-Size (R129) | 61–105 cm | Up to 18 kg | YesISOFIX with support leg | To 105 cm (rear- and forward-facing) | Yes | 13.5 kg | AdCheck price on Amazon |
| Britax Römer Evolvafix Mid-rangeSpecs from the Amazon.co.uk listing. Harness up to 22 kg, then converts to a booster.Amazon listing for Britax Römer Evolvafix (opens in a new tab) · checked 30 October 2026 | Toddler to booster | i-Size (R129) | 76–150 cm | Up to 36 kg | YesISOFIX plus top tether (76–105 cm); ISOFIX or belt (100–150 cm) | Forward-facing only (from 76 cm) | No | 9.8 kg | AdCheck price on Amazon |
| Britax Römer Discovery Plus 2 BudgetSpecs from the Amazon.co.uk listing. Slim shape, so three seats can fit side by side in many cars, according to the listing.Amazon listing for Britax Römer Discovery Plus 2 (opens in a new tab) · checked 30 October 2026 | High-back booster | i-Size (R129) | 100–150 cm | 15–36 kg | YesISOFIX or 3-point belt | Forward-facing high-back booster | No | 5.9 kg | AdCheck price on Amazon |
| Graco SnugLite 2 i-Size BudgetSpecs from the Amazon.co.uk listing. The listing says it meets i-Size/R129 when used with one of those bases. Check the base before you buy.Amazon listing for Graco SnugLite 2 i-Size (opens in a new tab) · checked 30 October 2026 | Infant carrier | i-Size (R129) | 40–75 cm | 0–13 kg | YesNeeds a Graco SnugLite or SnugTurn i-Size ISOFIX base (sold separately) | Rear-facing only (to 75 cm / 13 kg) | Not listed | 3.3 kg | AdCheck price on Amazon |
| Joie i-Pivot Grow i-Size PremiumSpecs from the Amazon.co.uk listing. Birth to booster in four modes. The listing does not state the fitting method or a weight range in a usable form, so those show as Not listed.Amazon listing for Joie i-Pivot Grow i-Size (opens in a new tab) · checked 30 October 2026 | 360 / rotating | i-Size (R129) | 40–135 cm | Not listed | Not listed | Not listed | Yes | 13.68 kg | AdCheck price on Amazon |
| Bugaboo Otter by Nuna PremiumSpecs from the Amazon.co.uk listing. Reclines flat. Sold as an i-Size infant seat. The height range is not clearly listed. The listing showed "Only 2 left in stock".Amazon listing for Bugaboo Otter by Nuna (opens in a new tab) · checked 30 October 2026 | Infant carrier | i-Size (R129) | Not listed | 0–13 kg | YesBugaboo 360 ISOFIX base (sold separately), or seat belt | Rear-facing only (birth to about 15 months) | Not listed | 4.8 kg | AdCheck price on Amazon |
| Silver Cross Motion All Size 2 360 PremiumSpecs from Silver Cross (Ireland) product page. The Amazon listing title matches the product. Approved to R129/03, birth to about 12 years.Maker's page for Silver Cross Motion All Size 2 360 (opens in a new tab) · checked 30 October 2026 | 360 / rotating | i-Size (R129) | 40–145 cm | Harness to 18 kg | YesIntegrated ISOFIX with support leg | To 105 cm / 18 kg | Yes | 14.4 kg | AdCheck price on Amazon |
| Graco SnugEssentials i-Size BudgetSpecs from the Amazon.co.uk listing. Clicks onto some Graco pushchairs as a travel system. Check which ones before you buy.Amazon listing for Graco SnugEssentials i-Size (opens in a new tab) · checked 30 October 2026 | Infant carrier | i-Size (R129) | 40–75 cm | 0–13 kg | YesGraco i-Size ISOFIX base compatible (base sold separately) | Rear-facing only (to 75 cm / 13 kg) | Not listed | 3.9 kg | AdCheck price on Amazon |
| Graco Turn2Me DLX i-Size Mid-rangeSpecs from the Amazon.co.uk listing. Forward-facing is allowed from 15 months (76 cm).Amazon listing for Graco Turn2Me DLX i-Size (opens in a new tab) · checked 30 October 2026 | 360 / rotating | i-Size (R129) | 40–105 cm | Up to 19.5 kg | YesISOFIX (the listing's spec table also says seat belt, so check the fitting guide) | To 105 cm / 19.5 kg | Yes | 13.46 kg | AdCheck price on Amazon |
| Maxi-Cosi Emerald 360 S i-Size PremiumSpecs from the Amazon.co.uk listing. FlexiSpin 360° rotation, four recline positions. The rear-facing limit is not stated there, so it shows as Not listed.Amazon listing for Maxi-Cosi Emerald 360 S i-Size (opens in a new tab) · checked 30 October 2026 | 360 / rotating | i-Size (R129) | 40–150 cm | 0–36 kg | YesISOFIX | Not listed | Yes | 12.7 kg | AdCheck price on Amazon |
| Kinderkraft I-FIX Endura Safe BudgetSpecs from the Amazon.co.uk listing. Listed as i-Size (R129/03). The listing's weight looks wrong for a rotating seat, so we leave it blank.Amazon listing for Kinderkraft I-FIX Endura Safe (opens in a new tab) · checked 30 October 2026 | 360 / rotating | i-Size (R129) | 61–150 cm | Up to 36 kg | YesISOFIX | To 105 cm / 21 kg | Yes | Not listed | AdCheck price on Amazon |
| Chicco Quizy Lite i-Size BudgetSpecs from the Amazon.co.uk listing. Aged about 3 to 12 years. The listing showed "Only 1 left in stock", so stock may be limited.Amazon listing for Chicco Quizy Lite i-Size (opens in a new tab) · checked 30 October 2026 | High-back booster | i-Size (R129) | 100–150 cm | Not listed | Not listedThe listing mentions both ISOFIX and the car's 3-point belt, so check the fitting guide | Forward-facing high-back booster | No | 5.7 kg | AdCheck price on Amazon |
| Bebeconfort Ever & Go i-Size BudgetSpecs from the Amazon.co.uk listing. Folds for travel and has a built-in carry strap. Folded size is listed as 51 × 44 × 26.5 cm. Harness from 76 to 105 cm, then booster mode from 100 to 150 cm. The listing says the seat is 45.5 cm wide.Amazon listing for Bebeconfort Ever & Go i-Size (opens in a new tab) · checked 2 November 2026 | Toddler to booster | i-Size (R129) | 76–150 cm | Up to 36 kg | YesISOFIX connectors and top tether | Forward-facing only (from 76 cm) | No | 5.95 kg | AdCheck price on Amazon |
| Bebeconfort EvolveFix i-Size BudgetSpecs from the Amazon.co.uk listing. Listed with 360° rotation, 5 recline positions and 9 headrest positions. Rear-facing with a newborn inlay; the listing says harness use goes up to 105 cm, then forward-facing to 150 cm.Amazon listing for Bebeconfort EvolveFix i-Size (opens in a new tab) · checked 2 November 2026 | 360 / rotating | i-Size (R129) | 40–150 cm | Up to 36 kg | YesISOFIX and top tether | To 105 cm | Yes | 9.7 kg | AdCheck price on Amazon |
| Bebeconfort EvolveFix Plus i-Size Mid-rangeSpecs from the Amazon.co.uk listing. Listed with 360° rotation, 4 recline positions, 10 headrest positions and dual side impact protection. The listing does not give the seat weight, so it shows as Not listed.Amazon listing for Bebeconfort EvolveFix Plus i-Size (opens in a new tab) · checked 2 November 2026 | 360 / rotating | i-Size (R129) | 40–150 cm | Up to 36 kg | YesISOFIX with support leg | To 105 cm | Yes | Not listed | AdCheck price on Amazon |
| Bebeconfort EverFix i-Size BudgetSpecs from the Amazon.co.uk listing. Harness mode from 76 to 105 cm, booster mode from 100 to 150 cm. Listed with 4 recline positions and 13 headrest positions.Amazon listing for Bebeconfort EverFix i-Size (opens in a new tab) · checked 2 November 2026 | Toddler to booster | i-Size (R129) | 76–150 cm | 9–36 kg | YesISOFIX and top tether | Forward-facing only (from 76 cm) | No | 8.8 kg | AdCheck price on Amazon |
| Bebeconfort EverFix Plus i-Size BudgetSpecs from the Amazon.co.uk listing. Harness mode from 76 to 105 cm, booster mode from 100 to 150 cm. Listed with side impact protection and 14 headrest positions.Amazon listing for Bebeconfort EverFix Plus i-Size (opens in a new tab) · checked 2 November 2026 | Toddler to booster | i-Size (R129) | 76–150 cm | Up to 36 kg | YesISOFIX and top tether | Forward-facing only (from 76 cm) | No | 7.18 kg | AdCheck price on Amazon |
| Bebeconfort Fortis i-Size BudgetSpecs from the Amazon.co.uk listing. Harness mode from 76 to 105 cm, booster mode from 100 to 150 cm. Listed with side impact protection and 13 headrest positions.Amazon listing for Bebeconfort Fortis i-Size (opens in a new tab) · checked 2 November 2026 | Toddler to booster | i-Size (R129) | 76–150 cm | Up to 36 kg | YesISOFIX and top tether | Forward-facing only (from 76 cm) | No | 7.18 kg | AdCheck price on Amazon |
| Bebeconfort Apollo i-Size BudgetSpecs from the Amazon.co.uk listing. Listed with 4 recline positions and 13 headrest positions.Amazon listing for Bebeconfort Apollo i-Size (opens in a new tab) · checked 2 November 2026 | Toddler to booster | i-Size (R129) | 76–150 cm | 9–36 kg | YesISOFIX and top tether; ISOFIX or seat belt from 100 cm | Forward-facing only (from 76 cm) | No | 9 kg | AdCheck price on Amazon |
| Bebeconfort Atlas 360 i-Size BudgetSpecs from the Amazon.co.uk listing. Listed with 360° rotation, 4 recline positions, 10 headrest positions and dual side impact protection.Amazon listing for Bebeconfort Atlas 360 i-Size (opens in a new tab) · checked 2 November 2026 | 360 / rotating | i-Size (R129) | 40–150 cm | Up to 36 kg | YesISOFIX with support leg | To 105 cm | Yes | 11.7 kg | AdCheck price on Amazon |
| Bebeconfort RevolveFix 360 i-Size BudgetSpecs from the Amazon.co.uk listing. Listed with 360° rotation, 6 recline positions and 12 headrest positions. The listing does not give the seat weight, so it shows as Not listed.Amazon listing for Bebeconfort RevolveFix 360 i-Size (opens in a new tab) · checked 2 November 2026 | 360 / rotating | i-Size (R129) | 40–150 cm | Up to 36 kg | YesISOFIX and top tether | To 105 cm | Yes | Not listed | AdCheck price on Amazon |
| Bebeconfort RevolveFix Plus 360 i-Size BudgetSpecs from the Amazon.co.uk listing. Listed with 360° rotation, 8 recline positions and 12 headrest positions.Amazon listing for Bebeconfort RevolveFix Plus 360 i-Size (opens in a new tab) · checked 2 November 2026 | 360 / rotating | i-Size (R129) | 40–150 cm | Up to 36 kg | YesISOFIX with support leg | To 105 cm | Yes | 10.75 kg | AdCheck price on Amazon |
| Bebeconfort RevolveFix Max 360 i-Size SLIDETECH Mid-rangeSpecs from the Amazon.co.uk listing. Adds SLIDETECH, which lets the seat slide towards you as well as rotate, according to the listing. Newborn inlay for 40–75 cm; rear-facing without it up to 105 cm. 10 recline and 14 headrest positions.Amazon listing for Bebeconfort RevolveFix Max 360 i-Size SLIDETECH (opens in a new tab) · checked 2 November 2026 | 360 / rotating | i-Size (R129) | 40–150 cm | Up to 36 kg | YesISOFIX with support leg | To 105 cm | Yes | 12.5 kg | AdCheck price on Amazon |
| Bebeconfort EvoluFix 360 i-Size BudgetSpecs from the Amazon.co.uk listing. Listed with 360° rotation, 6 recline positions and 12 headrest positions.Amazon listing for Bebeconfort EvoluFix 360 i-Size (opens in a new tab) · checked 2 November 2026 | 360 / rotating | i-Size (R129) | 40–150 cm | Up to 36 kg | YesISOFIX and top tether | To 105 cm | Yes | 8.5 kg | AdCheck price on Amazon |
| Bebeconfort Demeter 360 i-Size BudgetSpecs from the Amazon.co.uk listing. Listed with 360° rotation, 6 recline positions and 12 headrest positions. The listing text matches EvoluFix 360.Amazon listing for Bebeconfort Demeter 360 i-Size (opens in a new tab) · checked 2 November 2026 | 360 / rotating | i-Size (R129) | 40–150 cm | Up to 36 kg | YesISOFIX and top tether | To 105 cm | Yes | 10.7 kg | AdCheck price on Amazon |
| Bebeconfort RoadFix i-Size BudgetSpecs from the Amazon.co.uk listing. Foldable backrest booster for about 3.5 to 12 years. Listed with 14 headrest positions. Seat weight is from the listing title; the listing details do not repeat it.Amazon listing for Bebeconfort RoadFix i-Size (opens in a new tab) · checked 2 November 2026 | High-back booster | i-Size (R129) | 100–150 cm | Up to 36 kg | YesISOFIX connectors (optional to use) | Forward-facing high-back booster | No | 4.4 kg | AdCheck price on Amazon |
| Bebeconfort RoadSafe i-Size BudgetSpecs from the Amazon.co.uk listing. Foldable backrest booster for about 3.5 to 12 years, fitted with the seat belt. Listed with 14 headrest positions. The listing gives 3 kg in the title and 3.4 kg in the details, so we leave the seat weight blank.Amazon listing for Bebeconfort RoadSafe i-Size (opens in a new tab) · checked 2 November 2026 | High-back booster | i-Size (R129) | 100–150 cm | 15–36 kg | NoFitted with the seat belt; ISOFIX is not needed | Forward-facing high-back booster | No | Not listed | AdCheck price on Amazon |
| Bebeconfort Ride 2-in-1 i-Size BudgetSpecs from the Amazon.co.uk listing. The backrest comes off, so it works as a booster cushion for older children (135–150 cm per the listing). Includes a cup holder and 11 headrest positions.Amazon listing for Bebeconfort Ride 2-in-1 i-Size (opens in a new tab) · checked 2 November 2026 | High-back booster | i-Size (R129) | 100–150 cm | 15–36 kg | YesISOFIX connectors (optional to use) | Forward-facing high-back booster | No | 3.75 kg | AdCheck price on Amazon |
| Bebeconfort Hera i-Fix BudgetSpecs from the Amazon.co.uk listing. Foldable booster for about 3.5 to 12 years, 14 headrest positions. The listing says ISOFIX in the title and bullets, but its details table says seat belt, so check the fitting guide. It gives 3.8 kg in the title and 4.44 kg in the details, so we leave the seat weight blank.Amazon listing for Bebeconfort Hera i-Fix (opens in a new tab) · checked 2 November 2026 | High-back booster | i-Size (R129) | 100–150 cm | 15–36 kg | YesISOFIX | Forward-facing high-back booster | No | Not listed | AdCheck price on Amazon |
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How we choose
We pick well-known products that UK shops currently list, across budget, mid-range and premium. Every spec comes from the manufacturer's own page or the Amazon.co.uk listing, and we link the source on each row. Anything we couldn't confirm says Not listed rather than a guess. We follow official safety standards where they apply (only i-Size / UN R129 seats appear here), but we don't test products hands-on, so this is a shortlist to start from, not a verdict.
How to choose a car seat · i-Size and R129 explained · Travel car seats: lightweight and foldable options · Check your gear against UK recalls · How our affiliate links work
What the table covers
- Approval standard shown on the label
- Height / weight / age range
- Base type and fitting method
- Listed weight
Before buying any car seat, read the official UK rules on which seats are legal and how to choose one. GOV.UK: child car seats, the rules
Safety notices worth knowing about
Straight from the GOV.UK OPSS feed, last updated 7 November 2026. Matching is automatic and based on the notice title, so always read the official notice.
- Axkid MiniKid Core Car Seats (2609-0213)View on GOV.UK →