Rank 2 of 8 in Air fryers Sources disagree
Ninja Double Stack XL (SL400)
4 tests from 2 countries · 1 of them not from the UK
Score by criterion
Prices · United Kingdom
Retailers
Strengths
- 5 out of 5 stars at TechRadar and Trusted Reviews
- Small footprint thanks to stacked drawers
Weaknesses
- Only satisfactory (2.8) at Stiftung Warentest 1/2025, cooking rated satisfactory
- Does not cook evenly; expensive (Ideal Home)
- Large items do not fit in whole (TechRadar)
Tests reviewed
| Source | Country | Issue | Original verdict | Converted |
|---|---|---|---|---|
| Stiftung Warentest | Germany | test 1/2025 · as reported by lecker.de | befriedigend (2,8) | 71 |
| Ideal Home | United Kingdom | Review | 4 / 5 | 80 |
| TechRadar | United Kingdom | Review | 5 / 5 | 100 |
| Trusted Reviews | United Kingdom | Review | 5 / 5 | 100 |
Where the tests disagree.
Each dot is the average test result of one country, converted to 0–100. The further apart the dots, the more it pays to read the individual reports.
Ninja Double Stack XL (SL400) ± 11 pts
Specifications
| Capacity | 9,5 l (2 × 4,75 l, übereinander) |
|---|---|
| Dimensions | 38,5 × 28 × 47 cm |
| Weight | 10,3 kg |
| Also known as | SL400EU (DE) |