Quick Verdict
This Ninja Foodi Smart XL Grill review is for buyers who want one appliance that can grill indoors and handle several other cooking jobs without taking over the whole kitchen. Based on the listed product details, the FG551 combines indoor grilling, air frying, roasting, baking, broiling, and dehydrating in one countertop unit, with a smart thermometer and an XL grilling capacity that makes it more appealing than a basic air fryer for family meals.
The main appeal here is convenience. You are getting a 6-in-1 appliance with a grill-focused design, a max temperature of 500°F, and capacity claims that include up to 6 steaks or 24 hot dogs at once. That makes it easier to see why this model is aimed at people who cook for more than one person and want a stronger grilling angle than a standard basket air fryer usually offers.
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Table of Contents
What Is the Ninja Foodi Smart XL Grill?
The Ninja Foodi Smart XL Grill FG551 is an indoor electric grill and air fryer combo sold as a 6-in-1 appliance. The product title and listing describe grilling, air frying, roasting, baking, broiling, and dehydrating, while the page also highlights Ninja’s Smart Cook System and built-in thermometer as major selling points.
On the visible specs, this model is listed with 1760 watts of power, a 4-quart capacity, black and silver styling, stainless steel material, and dimensions of roughly 15.75 by 16.54 by 11.1 inches. It is clearly designed as a countertop appliance rather than something compact for very small kitchens.
Key Features That Stand Out
6-in-1 cooking versatility

One of the strongest points in this listing is the simple fact that it does more than grill. The FG551 is positioned as a single appliance for grilling, air frying, roasting, baking, broiling, and dehydrating, which can make it appealing if you prefer multi-use kitchen gear over buying separate machines.
Smart Cook System and thermometer
Ninja puts a lot of emphasis on the smart thermometer here. The product page says the Foodi Smart Thermometer works with 4 protein presets and 9 doneness levels, while also noting that the grill can automatically shut off when food is ready. That is the kind of feature that will matter most to people who often cook meat and do not want to keep opening the lid and guessing.
XL cooking capacity
Capacity is another reason this model stands out from smaller countertop options. The listing says the grill grate can fit up to 6 steaks or 24 hot dogs, and the page also says it grills up to 50% more food than the original Ninja Foodi Grill. Even without independent testing, that positioning makes it clear that this version is aimed at bigger meals rather than solo cooking only.
High-heat indoor grilling
The page highlights 500°F cyclonic grilling technology for char-grilled flavour indoors, plus “virtually smoke free” positioning in the comparison section. That does not mean it replaces every outdoor grill experience, but it does show the product is built around grilling performance rather than treating grilling as a secondary extra.
Ninja Foodi Smart XL Grill Review: Pros and Cons
Pros
- 6-in-1 design gives you multiple cooking functions in one appliance.
- Smart thermometer with protein presets and doneness levels adds convenience.
- XL grilling capacity looks useful for couples, families, and batch cooking.
- High max temperature of 500°F supports the grill-first positioning.
- Indoor setup suits buyers who want grilling without needing outdoor space.
Cons
- It is not a small appliance, so countertop space could be an issue in compact kitchens.
- At over 22 pounds, it is not something most people will want to move in and out of storage every day.
- The visible listing does not show an easy price up front here, so value depends heavily on the deal you find at the time of purchase.
- Buyers who only want basic air frying may find this more appliance than they actually need. This is an inference from its grill-led feature set, size, and multifunction design.
Who It Is Best For
This model looks best suited to buyers who want indoor grilling to be the main attraction, not just an occasional extra. It makes the most sense for households that cook meat, burgers, chicken, seafood, or mixed mains and sides regularly and want a machine that can also air fry and handle other cooking tasks.
It also looks like a stronger fit for family cooking than for single-portion cooking. The XL positioning, large grill grate, and larger body all suggest it is aimed at people who want to cook more food in one go.
Who It Is Not Ideal For
This probably is not the best match for someone who wants the smallest possible air fryer for a tight flat, student setup, or occasional snack use. A compact basket-style air fryer will usually be easier to place, lift, and store. That conclusion is based on the FG551’s size, weight, and grill-focused design rather than any hidden or unlisted feature.
It may also be more than necessary for buyers who do not care about grilling or smart temperature control. If those are the headline features, and you will not use them, part of the value proposition disappears. This is an inference from the way the listing positions the product.
Buying Considerations Before You Order
Countertop space and weight
Before buying, check your kitchen space carefully. The listed footprint is about 15.75 inches deep, 16.54 inches wide, and 11.1 inches high, with a weight of 22.44 pounds. That is manageable for a permanent countertop spot, but less convenient if you plan to pack it away after every use.
Cooking style and batch size
The FG551 makes more sense if you genuinely want to cook larger portions or mixed meals. The listing’s claims around 6 steaks, 24 hot dogs, mains and sides, and up to 2 pounds in the crisper basket all point to a machine built for more substantial cooking sessions.
What the listed specs really suggest
The specs suggest a fairly powerful, grill-led appliance rather than a lightweight add-on gadget. With 1760 watts, a 500°F max temperature, smart thermometer features, and multiple cooking modes, this seems aimed at buyers who want one premium-style countertop cooker to do several jobs well enough to reduce appliance clutter. That last point is a reasonable inference from the listed functions, not a claim of replacement performance in every kitchen.
Is the Ninja Foodi Smart XL Grill Good Value for Money?
In value terms, this product looks strongest for the buyer who will use the grilling function often and also make real use of the extra modes. If you want indoor grilling plus air frying, roasting, baking, broiling, and dehydrating in one machine, the FG551 has a clearer case for itself than a single-purpose appliance.
If, on the other hand, you mainly want to crisp frozen food or reheat leftovers, the feature set may be more than you need. So the value question is less about whether the appliance is capable and more about whether your cooking habits match what it is built to do. That conclusion follows from the listed size, functions, and grill-heavy positioning.
Final Verdict
This Ninja Foodi Smart XL Grill review points to a product that looks well suited to buyers who want a serious indoor grill first and a multifunction cooker second. The FG551 stands out for its 6-in-1 cooking modes, smart thermometer, 500°F high-heat grilling, and family-sized capacity claims.
The biggest trade-off is size. This is not the most compact or simplest option in the category, but for the right buyer that is also why it may be more useful. If you want a countertop appliance that can handle indoor grilling and more substantial meal prep in one place, the Ninja Foodi Smart XL Grill FG551 looks like a strong option worth considering.
Ready to check the latest offer on the Ninja Foodi Smart XL Grill? View the product listing here: https://amzn.to/4rP3d5l
FAQs
Is the Ninja Foodi Smart XL Grill an air fryer too?
Yes. The listing presents it as a 6-in-1 appliance that grills, air fries, roasts, bakes, broils, and dehydrates.
What model is this Ninja indoor grill?
The product page identifies it as the Ninja FG551, also described as the Foodi Smart XL 6-in-1 Indoor Grill.
Does the Ninja Foodi Smart XL Grill have a thermometer?
Yes. The visible listing highlights a Smart Cook System and Foodi Smart Thermometer with protein presets and doneness levels.
How big is the Ninja Foodi Smart XL Grill?
The listed dimensions are about 15.75 inches deep, 16.54 inches wide, and 11.1 inches high, with a listed weight of 22.44 pounds. That is roughly 40 cm deep, 42 cm wide, and 28.2 cm high, with a weight of about 10.2 kg.
How much can the Ninja FG551 cook at once?
It appears to be better suited to families or multi-person households than very small households because the page emphasises XL capacity and bigger meal prep. That is an inference based on the listed size and capacity claims.
