Ninja power or Tefal value: which blender deserves your worktop?

Display

Neither blender has a screen, so this category is really about controls and usability rather than visuals. The Ninja BN750UK wins because its Auto-iQ system gives you three automatic programs: Blend, Max Blend, and Crush, plus four manual settings. That makes it feel more intelligent and more guided, especially if you want reliable results without guessing timings. The Tefal BL420840 keeps things simpler with 2 speeds plus pulse, which is perfectly fine, but it’s less refined and offers less control over texture.

Winner: Ninja. More programs, better automation, and a more modern user experience.

Performance

This is the biggest gap in the comparison. The Ninja’s 1200W motor is exactly the kind of power you want if you’re blending frozen fruit, nut butter, thick smoothies, soups, or crushing lots of ice. It also comes with a 2.1L jug and a 700ml cup, so it’s built for both family batches and grab-and-go drinks. The Tefal has a 600W motor, a 2L jug, and 1.25L effective capacity, which is fine for lighter jobs like shakes and basic smoothies, but it will not feel as confident with tougher ingredients. If you want a blender that can genuinely handle heavy-duty kitchen work, Ninja is in a different league.

Winner: Ninja. Twice the power and far better suited to demanding blending.

Build quality and design

Both are sensible black countertop blenders aimed at real kitchens rather than showpiece appliances. The Ninja feels more premium overall, with a sturdier reputation, dishwasher-safe parts, and the useful bonus of a 700ml single-serve cup. That makes it more versatile for UK households where counter space can be tight and one appliance needs to do multiple jobs. The Tefal Blendforce II is lighter on the wallet and simpler in construction, which can be appealing, but the plastic jug and lower-powered base make it feel more entry-level. If you want a blender that feels like a long-term upgrade, Ninja has the edge.

Winner: Ninja. Better versatility, stronger specification, and a more premium finish.

Battery life

Neither product is cordless, so battery life does not apply. In practical UK terms, both are mains-powered countertop blenders that will plug into a standard household socket and stay put on the worktop. What matters instead is convenience, and Ninja wins here because the extra cup gives you more flexibility for smaller blends without dirtying the main jug. The Tefal is still straightforward, but it offers less everyday convenience.

Winner: Ninja, by default, for better mains-powered usability and flexibility.

Price and value for money

This is where the Tefal makes its case. At £31.15, it is £88.85 cheaper than the Ninja, and that is a huge saving. If you only want a blender for occasional smoothies, shakes, or light ice crushing, the Tefal offers very respectable value and its 4.4/5 rating from 5,908 reviews suggests many buyers are happy with it. But value is not just about the lowest price; it’s about what you get for your money. The Ninja’s 4.7/5 rating from 5,053 reviews, 1200W motor, Auto-iQ programs, larger jug, and extra cup justify the premium if you’ll use it regularly. For casual buyers, Tefal wins on affordability. For serious cooks, Ninja wins on total value.

Winner: Tie, depending on use case. Tefal wins on upfront cost; Ninja wins on long-term capability.

Game library/features

Blenders do not have game libraries, so the relevant comparison is feature set. The Ninja is the clear winner with Auto-iQ, three automatic programs, four manual settings, a 2.1L jug, and a 700ml cup. That combination makes it more adaptable for everything from breakfast smoothies to batch sauces. The Tefal is more basic with 2 speeds, pulse, removable stainless steel blades, and preset smoothie and ice-crush functions. It’s functional, but it doesn’t give you the same depth of control or flexibility.

Winner: Ninja. More settings, more automation, and more useful accessories.

Overall user experience

The Ninja is the blender for people who want confidence and consistency. If you regularly make smoothies, frozen drinks, soups, or need a blender that can handle tougher ingredients without complaint, it feels like the smarter kitchen investment. It will take up a bit more of your budget, but it also saves hassle and delivers better results. The Tefal is the better choice if you want an affordable, simple blender for occasional use and don’t need top-tier power. It’s easy to understand, considerably cheaper, and good enough for many households.

Overall summary: the Ninja BN750UK is the better blender for most people because it is more powerful, more versatile, and better equipped for real-world kitchen use. The Tefal Blendforce II is only the better buy if price is the main priority and your blending needs are fairly modest.