Advertising Disclosure Slimline Car Seat Comparison - July 2025
7 Best Slimline Car Seat In the UK
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Advertising Disclosure
| 1 Best Choice  9.8Exceptional | 2  9.7Exceptional | 3  9.5Excellent | 4  9.4Excellent | 5 Best Value  9.1Excellent | 6  9.0Excellent | 7  8.9Very Good |
| View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon |
ModelKinderkraft Safety FIX2 I-Size 76-150 cm Car Seat, 15 Months - 12 Years, Booster Child Seat, Isofix, Top Tether, Adjustable Headrest, Group 1-2-3, 5-Point Safety Harness, Modular Insert, Gray | Model Maxi-Cosi Tanza i-Size, High Back Booster Seat, 3.5–12 years, 100–150cm, Compact Foldable Car Seat, 10 Headrest Positions, G-CELL Side Impact Protection, Padded & Elevated Kids Car Seat, Full Black | Model Cozy N Safe Logan Group 1/2/3 Car Seat 9-36kg, 9 Months to 12 Years, 5 Point Harness, Forward Facing, Side Impact Protection, Adjustable Headrest, Lightweight, Child, Toddler Car Seat - Black/Grey | Model Graco Eldura R129 Harness Booster (76-145cm - 15 Months to Approx. 12 Years). Harness mode from 15 months to approx. 4 Yrs (76-105cm), Highback mode from approx. 3.5 to 12 yrs (105-145cm), Midnight | Model Maxi-Cosi Nomad Plus, Foldable Car Seat, 15 Months – 4 Years, 76 - 105cm , Portable Travel Car Seat, Ultra-Compact & Lightweight, Side Impact Protection, Fits any Car, Travel Bag, Authentic Black | Model Graco Junior Maxi i-Size R129 Highback Booster car seat with cupholders, Suitable from 100-150cm (approx. 3.5 to 12 years), Midnight fashion | Model Joie Stages R44 from Birth Combination Group 0+1/2 Belted Car Seat (Birth - Approx. 7 Years, 0-25kg) - Coal |
BrandKinderkraft | Brand Maxi-Cosi | Brand COZY N SAFE | Brand Graco | Brand Maxi-Cosi | Brand Graco | Brand Joie |
Reviews | Reviews | Reviews  | Reviews | Reviews | Reviews | Reviews  |
Features | ||||||
Comfort 9.4 | Comfort 9.6 | Comfort 9.4 | Comfort 9.1 | Comfort 9.1 | Comfort 8.9 | Comfort 8.6 |
Tech Specs | ||||||
customer reviews4.6 4.6 out of 5 stars 9, 262 ratings 4.6 out of 5 stars | customer reviews 4.5 4.5 out of 5 stars 65 ratings 4.5 out of 5 stars | customer reviews 4.5 4.5 out of 5 stars 741 ratings 4.5 out of 5 stars | customer reviews 4.8 4.8 out of 5 stars 14 ratings 4.8 out of 5 stars | customer reviews 4.1 4.1 out of 5 stars 94 ratings 4.1 out of 5 stars | customer reviews 4.7 4.7 out of 5 stars 346 ratings 4.7 out of 5 stars | customer reviews 4.6 4.6 out of 5 stars 12 ratings 4.6 out of 5 stars |
batteries required No | batteries required No | batteries required No | batteries required No | batteries required No | batteries required No | batteries required No |
orientation Rear Facing | orientation Forward Facing | orientation Forward Facing | orientation Forward Facing | orientation Forward Facing | orientation Forward Facing | orientation - |
product dimensions 42 x 37 x 66 cm 5.7 kg | product dimensions 59 x 45 x 62 cm 6.72 kg | product dimensions 41 x 45 x 72 cm 6 kg | product dimensions - | product dimensions 50 x 37.5 x 57 cm 4.26 kg | product dimensions 53.7 x 40.8 x 81.7 cm 3.49 kg | product dimensions 78 x 44 x 73 cm 10 kg |
item weight 5.7 kg | item weight 6.72 kg | item weight 6 kg | item weight 5.4 kg | item weight 4.26 kg | item weight 3.49 kg | item weight - |
maximum weight recommendation 9 Kilograms | maximum weight recommendation 36 Kilograms | maximum weight recommendation 36 Kilograms | maximum weight recommendation 9 Kilograms | maximum weight recommendation 18 Kilograms | maximum weight recommendation 36 Kilograms | maximum weight recommendation - |
material composition Polyethylene, Polyester | material composition 22 Steel, 60 PP, 3 ABS, 6 PA, 1 POM, 1 PC, 1 TPR, 4 EPS, 1 EPE, 1 Memory Foam | material composition 100 Polyester | material composition 20 cotton, 50 plastic, 30 steel | material composition PA6+30 :7 , ABS: 2 , POM: 1 , PP: 44 , TPE: 1 , EPE FOAM: 1 , Fabric: 10 , Paper: 11 , Metal: 24 | material composition 1.92 Steel, 85.16 plastic, 12.92 polyester | material composition - |
harness type 5-Point | harness type - | harness type 5-Point | harness type 5-Point | harness type 5-Point | harness type 3-Point | harness type - |
material type Foam, Polypropylene | material type Plastic | material type Plastic | material type Polyester, Alloy Steel, Plastic | material type - | material type Polyester, Alloy Steel, Polypropylene | material type - |
style SAFETY-FIX I-SIZE | style Tanza i-Size | style - | style Modern | style Authentic Black | style R129 Midnight | style - |
rear facing maximum child weight 18 Kilograms | rear facing maximum child weight 36 Kilograms | rear facing maximum child weight 18 Kilograms | rear facing maximum child weight - | rear facing maximum child weight 18 Kilograms | rear facing maximum child weight - | rear facing maximum child weight - |
minimum weight recommendation 9 Kilograms | minimum weight recommendation - | minimum weight recommendation 9 Kilograms | minimum weight recommendation - | minimum weight recommendation 9 Kilograms | minimum weight recommendation - | minimum weight recommendation - |
Available On | Available On | Available On | Available On | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.8
1KinderkraftKinderkraft Safety FIX2 I-Size 76-150 cm Car Seat, 15 Months - 12 Years, Booster Child Seat, Isofix, Top Tether, Adjustable Headrest, Group 1-2-3, 5-Point Safety Harness, Modular Insert, Gray
9.4 ComfortWhy we love it
Easy installation with three-point seat belt.
11 adjustable headrest positions for growing children.
Breathable material ensures comfort on long trips.
-
9.7
2Maxi-Cosi
Maxi-Cosi Tanza i-Size, High Back Booster Seat, 3.5–12 years, 100–150cm, Compact Foldable Car Seat, 10 Headrest Positions, G-CELL Side Impact Protection, Padded & Elevated Kids Car Seat, Full Black
9.6 ComfortWhy we love it
Compact and easy to transport.
Adjustable headrest for growing children.
Eco-friendly materials and washable cover.
-
9.5
3COZY N SAFE
Cozy N Safe Logan Group 1/2/3 Car Seat 9-36kg, 9 Months to 12 Years, 5 Point Harness, Forward Facing, Side Impact Protection, Adjustable Headrest, Lightweight, Child, Toddler Car Seat - Black/Grey
9.4 ComfortWhy we love it
Adjusts for growing children.
Easy to install and transfer.
Comfortable with washable covers.
Our ranking system
The TopChoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. TopChoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.
Features
Our team of experts analyzes key attributes, capabilities, significance, and many more depending on the type of product to determine its effectiveness.
Consumer Reviews
We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.
Popularity
Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.
Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
Value for money
TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
