Here is my full Ninja BN751 review. I used this blender every day for a month in my own kitchen. It is a big machine for people who want fast results. The motor power is huge. But it takes up a lot of room.
Overall, it works well for daily tasks. But it has a few annoying quirks you should know about. It is not perfect for everyone.
Quick Verdict
Here is the short version of my thoughts. This saves you time if you are in a rush.
| Category | Verdict |
| Best For | Big families and daily shake drinkers |
| Not Ideal For | Small kitchens and quiet mornings |
| Biggest Strength | Raw crushing power |
| Biggest Weakness | Very loud motor |
| Overall Rating | 4 out of 5 stars |
Unboxing & First Impressions
Taking this out of the box was fun. The base is heavy and feels very strong. The BPA-free jar had a slight plastic smell at first. That went away after one wash. The blade assembly looks scary sharp.
The countertop space it needs is large. I had to move my toaster to make room. The cord length is okay. But finding a plug was hard. The leak-proof lid is very stiff on the first try. You have to push hard to snap it shut. The buttons click nicely.
Ninja BN751 Review: Blending Performance
This is the most important part. I tested it with real recipes to see how it works daily.
Frozen fruit smoothie
Making a frozen fruit smoothie takes just 45 seconds on high blend speed. The smoothie texture comes out very soft and even. It is loud. There is no heat buildup. I found no chunks left behind. But I noticed a tiny bit of smoothie leaking from the bottom blade seal once. You must tighten the base hard to stop leaks.
Crushing ice
Crushing ice is very fast. I used the pulse function for ten seconds. It makes perfect snow. The noise during the blend hurts my ears. The motor stays cool. But I found ice chunks not fully crushed at low speed. You must use high speed. The lid stays sealed tight. There is no overflow.
Hot soup or sauce
I made hot tomato soup for three minutes. The blend is very even. But the base gets warm. The tight lid built up steam inside. The lid popping off mid-blend from hot soup pressure scared me. This left splatter marks on the counter after opening the lid too fast. You must let hot food cool down first.
Nut butter or thick blend
Making a thick blend takes five minutes. The texture is rough at first. The motor heats up a lot. I had to scrape residue off the walls often. The noise is a low growl. I saw the jar discoloring after blending turmeric root into the mix. The seal held up fine with no leaks.
Real-Life Daily Use Experience
Using this every day changed how I make breakfast. I use the variable speed control a lot. It is great for slow starts. But one day I forgot to lock the lid before blending. The machine just blinked at me. It will not start unless locked.
The buttons are nice and bright. But the loud motor waking people up early morning is a real issue. My kids complained. I also noticed the gasket smelling after blending garlic or onion. I had to soak it in vinegar. The pouring spout is nice and clean.
Design & Build Quality
The parts feel tough. The gray base looks nice in a modern kitchen.
| Part | Material | Feel |
| Base | Hard Plastic | Heavy |
| Blender Jar | Clear Plastic | Light |
| Blades | Metal | Sharp |
The suction cups on the bottom are great. They stick to the table hard. It does not shake or move when blending fast. It does show fingerprints on the dark screen. It looks a bit cheap next to metal tools.
Noise Level
The noise level is very high. This is not a quiet machine. The motor screams when it runs on high. You cannot talk over it.
Crushing hard ice sounds like a drill. If you live in an apartment, your neighbors will hear it. It vibrates a lot. But the rubber feet keep it in place on the counter.
Cleaning & Maintenance
Cleaning is not too bad. Rinsing the jar immediately so residue doesn’t dry is a must.
| Part | Dishwasher Safe | Wash Effort |
| Jar | Yes | Easy |
| Lid | Yes | Easy |
| Blades | Yes | Hard |
The self-clean cycle works fine for light drinks. But fibrous ingredients wrapping around blades force you to take it apart. The bottom base has small gaps. Dirt gets stuck there easily. You must hand wash the sharp parts.
Pros and Cons
Here are the best and worst things about it. It is a mixed bag.
| Pros | Cons |
| Huge motor power | Very loud |
| Fast blending performance | Hard to clean blade base |
| Big jar size | Stains from dark spices |
Comparison With Similar Blenders
You might look at other brands too. Here is how it compares to a famous rival.
Ninja BN751 vs Vitamix E310
I used both of these machines. They target different needs.
| Feature | Ninja BN751 | Vitamix E310 |
| Jar Size | 72 oz | 48 oz |
| Blend Speed | Fast | Very Fast |
| Price | Low | High |
The Vitamix makes a smoother drink. But the Ninja gives you a much bigger blender jar. The Ninja also costs a lot less. Both machines are very loud.
Who Should Buy This Blender?
Think about your real kitchen needs before you buy. This machine is not for everyone.
| Buy This If: |
| You make big family meals |
| You want fast ice crushing |
| You like auto program buttons |
| Avoid This If: |
| You need a quiet room |
| You lack countertop space |
| You hate cleaning sharp parts |
Long-Term Durability
I checked the parts after many weeks. The blade assembly stays very sharp. The jar shows small scratches from hard ice. It is not too cloudy yet. I worry about the rubber seal. It feels a bit loose after many washes. The motor still runs strong and fast.
Energy Efficiency
You can feel the raw power. The lights in my room dim just a bit when it starts. The blending performance stays strong even with long tasks. It has a shut-off feature to stop motor damage. It is too big for just one small drink a day. It wastes power for tiny meals.
Final Verdict on the Ninja BN751 Review
This is a strong blender. It does heavy work fast. It handles big meals well. The smart buttons save time on busy mornings.
The noise is bad. The cleaning takes time. But the price is right for the power you get. I recommend it for big homes that want fast results.