Bottom Line: Choose the Ninja FG551 if you want precise, stress-free cooking with a built-in thermometer that automatically stops at your selected doneness. Choose the Ninja BG500A if you want the same XL grilling and air-frying power at a lower price and don’t mind checking doneness yourself.
If you’re shopping for a large indoor grill and air fryer combo, the Ninja BG500A and Ninja FG551 are two of the most popular choices. While they look very similar, they are designed for slightly different types of cooks. This comparison breaks down the real differences so you can choose the model that actually fits your cooking habits.
Main Difference Between Ninja BG500A and FG551
The core difference between the Ninja BG500A and FG551 is automation. Both deliver powerful indoor grilling and air frying with the same XL capacity, but the FG551 adds Ninja’s Smart Cook System. This system uses a built-in thermometer to track internal temperature and automatically stop cooking at your chosen doneness level.
Ninja BG500A Overview
The Ninja BG500A is a straightforward, high-power indoor grill and air fryer built for families and large meals. It focuses on capacity and performance rather than smart automation.
- 6 cooking functions: Grill, Air Fry (Air Crisp), Bake, Roast, Broil, Dehydrate
- XL grill grate for multiple steaks or family-size portions
- Strong high-heat grilling for searing and browning
- No built-in thermometer
Real-World Experience
In daily use, the BG500A feels powerful and simple. It heats quickly, delivers solid grill marks, and handles large batches without overcrowding. Because there’s no thermometer guidance, you’ll need to flip and check thicker cuts manually, especially when grilling steak or chicken.
Pros
- Large capacity for families and meal prep
- Strong grilling and air-frying performance
- Simpler controls
- Lower price than smart-probe models
Cons
- No automatic doneness control
- Manual checking required for meats
- Large footprint on the countertop
Ninja FG551 Overview
The Ninja FG551 uses the same XL grill platform as the BG500A but adds smart cooking technology. Its standout feature is the Foodi Smart Thermometer, which stays in the food during cooking.
- Same 6 cooking functions as BG500A
- Smart Cook System with built-in thermometer
- Multiple protein presets and doneness levels
- XL grill grate fits up to six steaks
Real-World Experience
The FG551 excels when cooking meat. You select the protein and doneness level, insert the thermometer, and let the grill handle the rest. This removes guesswork and produces consistent results, especially for thick steaks, chicken breasts, and roasts.
Pros
- Built-in thermometer with automatic shutoff
- Very consistent meat results
- Same large capacity as BG500A
- Great for busy or less experienced cooks
Cons
- Higher price
- Extra features may feel unnecessary for confident cooks
- Large countertop footprint
BG500A vs FG551 Comparison Table
| Feature | Ninja BG500A | Ninja FG551 |
|---|---|---|
| Cooking Functions | 6-in-1 | 6-in-1 |
| Indoor Grill Size | XL | XL |
| Smart Thermometer | No | Yes |
| Doneness Control | Manual | Automatic |
| Best For | Value-focused family cooking | Precision meat cooking |
Which One Should You Choose?
- Choose Ninja BG500A if: You want a powerful indoor grill and air fryer, cook large meals often, and prefer a lower price over automation.
- Choose Ninja FG551 if: You cook meat frequently and want reliable, automatic doneness without checking temperatures manually.
Final Verdict
Both the Ninja BG500A and Ninja FG551 deliver excellent indoor grilling and air-frying performance with generous XL capacity. The real decision comes down to how much assistance you want while cooking.
If you value simplicity and savings, the BG500A is the better buy. If precision, convenience, and consistency matter more, the FG551 is worth the upgrade.
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