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Mueller 4 Slice Toaster Oven vs Breville Smart Oven Pro Side-by-Side Comparison

Mueller 4 Slice Toaster Oven vs Breville Smart Oven Pro. The first one has a minimal approach while the second has an elaborate one.

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Mueller 4 Slice

Breville Smart Oven Pro

Mueller 4 Slice Toaster Oven vs Breville Smart Oven Pro

Overall Verdict

6.1
Overall Score
7.8
Overall Score
  • Performance (50%)7.0
  • Design (25%)5.3
  • Usability (25%)5.2
  • Performance (50%)6.9
  • Design (25%)9.3
  • Usability (25%)8.0

The Mueller 4 Slice Toaster Oven (MT-175) has a minimal approach while the Breville Smart Oven Pro (BOV845BSS) has an elaborate one, which led to a big difference in their scores, especially regarding design and usability. However, their comparison brings up some interesting strengths and weaknesses of each individual.

Both toaster ovens have a high build quality shown in their thick and sturdy casing. The Mueller has a detachable crumb tray for cleaning the interior while the Breville has a non-stick interior for easy cleaning, both of which are rare features.

The Mueller has precise analog control dials but no digital display showing the exact timer and temperature like the Breville. In addition, the Breville has various cooking presets and additional toggle switches including interior light, convection, temperature conversion, and adding time to frozen foods.

Surprisingly, however, their performance scores are similar, and the Mueller’s is even higher by 0.1 point. From a value standpoint, the Mueller’s ratings are quite high while the Breville’s are not so much.

Despite its lower power output, the Mueller’s was better at baking pizza and especially toasting bread—our most crucial cooking test. The Breville scored higher in roasting whole whole chicken and baking fries by having a convection system and a higher power output.

Pros & Cons

  • Lightweight and small size
  • Easy-to-clean stainless steel exterior
  • Cool-touch door handle
  • Simple control knobs
  • Stay-on feature
  • Quartz heating elements have safeguards
  • Energy-saving
  • Useful toggles
  • High-contrast digital display
  • Non-stick interior
  • Sturdy construction
  • Easy-to-clean stainless steel exterior
  • Cool-touch door handle
  • Convenient slide-out crumb tray
  • No convection fan
  • No internal lighting
  • No safety mechanism for the door
  • No safety mechanism for the door
  • In need of an additional oven rack
  • Not very budget-friendly

Key Specs

Dimensions
L14.96 x W11.61 x H8.86 inches
L18.39 x W15.94 x H10.78 inches
Weight
9.0 lbs (4.1 kg)
18.1 lbs (8.2 kg)
Control Type
3 control knobs
LCD + 3 control knobs + 5 buttons
Temperature
150°F - 450°F
120°F - 450°F
Timer
1 minute - 30 minutes + stay-on
1 minute - 10 hours
Cooking Functions
4
10

Where to Buy?

Price at publication
$64.55
$259.99

*You help support HealthyKitchen101's product testing and reviews by purchasing from our retail partners.

Analysis and Test Results

Performance

Overall Performance Scoring
7.0
6.9

Toast

7.5
6.8
Mueller 4 Slice Toaster Oven Toast Test
From left to right, 24 pieces of toast for the top and bottom of three toast levels including lighter, medium, and darker.
The top and bottom of the best four pieces of toast from the stainless steel Mueller MT-175 4-Slice Countertop Toaster Oven.
On the left are the top and bottom of four pieces of toast from the first batch, and on the right are from the second batch.
Breville Smart Oven Pro Toaster Oven Toast Test
From left to right, 24 pieces of toast for the top and bottom of three toast levels including lighter, medium, and darker.
The top and bottom of the best four pieces of toast from the Breville BOV845BSS Smart Oven Pro Convection Toaster Oven.
On the left are the top and bottom of four pieces of toast from the first batch, and on the right are from the second batch.
Function
Toast
Toast
Number of Slices
4
4
Toast Level
⅓ to Dark
5/7
Cooking Time
4m
5m 13s
Second Batch
4m
3m 42s
Convection
No
No

Pizza

7.6
6.8
Mueller 4 Slice Toaster Oven Pizza Test
Mueller 4 Slice Toaster Oven PizzaA toaster oven baked 9-inch thick-crust meat pizza with cheese, onions, and green bell peppers on top inside a baking pan.
Two slices of oven baked 9-inch thick-crust meat pizza with cheese, onions, and green bell peppers on top of one another.
Two hands break apart a slice of pizza with cheese, meat, onions, and green bell peppers on top baked using a toaster oven.
Breville Smart Oven Pro Toaster Oven Pizza
A toaster oven baked 9-inch thick-crust meat pizza with cheese, onions, and green bell peppers on top inside a baking pan.
Two hands break apart a slice of pizza with cheese, meat, onions, and green bell peppers on top baked using a toaster oven.
Two slices of oven baked 9-inch thick-crust meat pizza with cheese, onions, and green bell peppers on top of one another.
Function
Toast
Bake
Temperature
450°F
450°F
Cooking Time
9m
4m
Convection
No
Yes

Roasted Whole Chicken

7.0
7.5
Mueller 4 Slice Toaster Oven Whole Roasted Chicken Test
A whole roasted chicken using the Mueller MT-175 Toaster Oven backside up on a silver baking pan on a white background.
A whole roasted chicken using the Mueller MT-175 Toaster Oven belly up on a silver baking pan on a white background.
A tray of whole toaster oven roasted chicken. The thermometer has two probes inside the chicken and displays 185°F and 192°F.
Eight pieces of a carved chicken including two carcass halves, two breasts, two wings, and two thighs on a baking pan.
Two hands pulling apart a roasted chicken thigh. In the white background is the rest of the roasted chicken on a baking pan.
Breville Smart Oven Pro Toaster Oven Whole Roasted Chicken Test
Breville Smart Oven Pro Toaster Oven Whole Roasted ChickenA whole roasted chicken using the Breville BOV845BSSUSC Toaster Oven backside up on an enamel broiling rack and baking pan.
A whole roasted chicken using the Breville BOV845BSSUSC Toaster Oven belly up on an enamel broiling rack and baking pan.
A tray of whole toaster oven roasted chicken. The thermometer has two probes inside the chicken and both display 198°F.
Eight pieces of a carved chicken including two carcass halves, two breasts, two wings, and two thighs on a baking pan.
Two hands pulling apart a roasted chicken thigh from the carcass. In the white background is the rest of the roasted chicken.
Function
Toast
Bake
Temperature
350°F
350°F
Cooking Time
1h 20m
1h
Convection
No
Yes

Baked French Fries

3.6
6.1
Mueller 4 Slice Toaster Oven Baked French Fries Test
Mueller 4 Slice Toaster Oven Baked French FriesPieces of baked french fries using the Mueller MT-175 Toaster Oven on a grooved silver baking pan on a white background.
A close-up of pieces of baked french fries using the Mueller MT-175 Toaster Oven on a baking pan on a white background.
Ten pieces of broken-up baked french fries are stacked on top of pieces of whole fries on a grooved silver baking pan.
Breville Smart Oven Pro Toaster Oven Baked French Fries
Breville Smart Oven Pro Toaster Oven Baked French FriesPieces of baked french fries using the Breville BOV845BSSUSC Toaster Oven on an enamel baking pan on a white background.
A close-up of pieces of baked french fries using the Breville BOV845BSSUSC on an enamel baking pan on a white background.
Eight pieces of broken-up baked french fries are stacked on top of pieces of whole fries on an enamel baking pan.
Function
Toast
Bake
Temperature
400°F
400°F
Cooking Time
27 m
24m
Convection
No
Yes

Design

Overall Design Scoring
5.3
9.3

In The Box

A box, the Mueller MT-175 4-Slice Toaster Oven, a recipe booklet, a baking pan, an oven rack, a user manual, and a brochure.
A box, the Breville BOV845BSSUSC, a pizza pan, a broiling rack, a warranty, a user manual, an oven rack, and a baking pan.

Exterior

5.0
9.5
A closed front of the stainless steel Mueller MT-175 4-Slice Toaster Oven with exterior measurements on a white background.
A closed front of the stainless steel Mueller MT-175 4-Slice Toaster Oven with exterior measurements on a white background.
Mueller 4 Slice Toaster Oven ExteriorThe front of a closed stainless steel Mueller MT-175 4-Slice Toaster Oven has a control panel and the right has holes.
The back and left sides of the Instant Omni Plus 18L have air ventilation holes. The back has a power cord and two buffers.
The top, front, and right sides of the Black+Decker TO1760SS 4-Slice Natural Convection Toaster Oven on a white background.
On a white background, the bottom of the Mueller MT-175 Toaster Oven has a detachable crumb tray, four stands, and holes.
The detached crumb tray of the stainless steel Black+Decker TO1760SS 4-Slice Countertop Toaster Oven on a white background.
A closed front of the Breville BOV845BSSUSC Smart Convection Toaster Oven with exterior measurements on a white background.
A closed front of the Breville BOV845BSSUSC Smart Convection Toaster Oven with exterior measurements on a white background.
Breville Smart Oven Pro Toaster Oven ExteriorThe front of a closed Breville BOV845BSSUSC Convection Toaster Oven has a control panel and the right has ventilation holes.
The back and left sides of the Breville BOV845BSSUSC Toaster Oven have air ventilation holes. The back has two buffers.
The top, front, and right sides of the Breville BOV845BSSUSC Smart Oven Pro Convection Toaster Oven on a white background.
On a white background, the Breville BOV845BSSUSC’s bottom has four stands and two carrying handles with ventilation holes.
Weight
9.0 lbs (4.1 kg)
18.1 lbs (8.2 kg)
Length
15.0" (38.0 cm)
18.4" (46.7 cm)
Width
11.6" (29.5 cm)
15.9" (40.5 cm)
Height
8.9" (22.5 cm)
10.8" (27.4 cm)
Material
Stainless steel
Stainless steel
Color
Gray
Silver
Door Handle
Cool-touch
Cool-touch
Tray Indicators
No
Yes
Crumb Tray
Detachable
Slide-out

Control Panel

The control panel of the Black+Decker TO1760SS 4-Slice Toaster Oven has 3 control knobs for temperature, function, and timer.
The Breville BOV845BSSUSC’s control panel has an LCD, 5 buttons, and 3 control knobs for function, temperature, and time.
Type
3 control knobs
LCD + 3 control knobs + 5 buttons
Temperature
150°F - 450°F
120°F - 450°F
Timer
1 minute - 30 minutes + stay-on
1 minute - 10 hours
Indicator Light
Yes
Yes
Status Bar
No
Yes
Light Toggle
No
Yes
Convection Toggle
No
Yes
Rotation Toggle
No
No
Automatic Preheat
No
Yes
Audio Cues
No
No

Cooking Functions

The function dial of the Black+Decker TO1760SS 4-Slice Toaster Oven has 3 cooking functions including Bake, Broil, and Toast.
Breville BOV845BSSUSC has 10 cooking functions: Toast, Bagel, Bake, Roast, Broil, Pizza, Cookies, Reheat, Warm, Slow Cook.

Interior

1.0
9.5
Mueller 4 Slice Toaster Oven InteriorThe Mueller MT-175 4-Slice Toaster Oven’s cooking chamber has 2 quartz heating elements with guards and 2 guide rails.
Mueller 4 Slice Toaster Oven InteriorThe Mueller MT-175 4-Slice Toaster Oven’s cooking chamber has 2 quartz heating elements with guards and 2 guide rails.
The Mueller MT-175 Oven has 1 bottom heating element with a guard and 2 guide rails on its right cooking chamber wall.
Breville Smart Oven Pro Toaster Oven InteriorBreville BOV845BSSUSC has 4 quartz heating elements with guards, 3 guide rails with safety hooks, a light, and a fan cavity.
Breville Smart Oven Pro Toaster Oven InteriorBreville BOV845BSSUSC has 4 quartz heating elements with guards, 3 guide rails with safety hooks, a light, and a fan cavity.
The Breville BOV845BSSUSC has 2 upper heating elements, a shining light, and 3 guide rails on its left cooking chamber wall.
The Breville BOV845BSSUSC has 4 quartz heating elements, a fan cavity, and 3 guide rails on its right cooking chamber wall.
Heating Elements
2 quartz
5 quartz
Convection Fan
No
Yes
Lighting
No
Yes
Tray Levels
2
3
Rotisserie
No
No
Safety Hook
No
All three levels

Power Cord

A two-pronged plug power cord. In the background is the stainless steel Mueller MT-175 4-Slice Countertop Toaster Oven.
A three-pronged plug power cord. In the background is the Breville BOV845BSSUSC Smart Oven Pro Convection Toaster Oven.
Length
30.7" (78.0 cm)
3.3 ft (1.0 m)
Type
2-prong plug
3-prong plug
Power
1100 W
1800 W
Rated Output
120 V ~ 60 Hz
110 V - 120 V ~ 60 Hz

Accessories

A stainless steel baking rack of the Mueller MT-175 4-Slice Countertop Toaster Oven on a white background.
A stainless steel baking rack of the Breville BOV845BSSUSC Smart Oven Pro Convection Toaster Oven on a white background.
Length
10.5" (26.7 cm)
14.1" (35.8 cm)
Width
8.8" (22.4 cm)
11.6" (29.5 cm)
Height
0.5" (1.3 cm)
0.3" (0.7 cm)
Material
Stainless steel
Stainless steel
Dishwasher Safe
Yes
Yes

Build Quality

8.0
9.0
The front of an opened stainless steel Mueller MT-175 4-Slice Countertop Toaster Oven with an oven rack and baking pan.
The front of an opened Breville BOV845BSSUSC Toaster Oven with a pizza pan, oven rack, enamel baking pan, and broiling rack.

Capacity

An opened front of the stainless steel Mueller MT-175 4-Slice Toaster Oven with interior measurements on a white background.
An opened front of the Breville BOV845BSSUSC Smart Oven Pro Toaster Oven with interior measurements on a white background.
Length
10.6" (27.0 cm)
14.2" (36.0 cm)
Width
9.8" (25.0 cm)
13.0" (33.0 cm)
Height
7.5" (19.0 cm)
8.3" (21.0 cm)

Usability

Overall Usability Scoring
5.2
8.0

User Control

6.0
9.5

Easeof Use

4.0
7.0

Cleanability

7.0
8.0
Mueller 4 Slice Toaster Oven CleanabilityPermanent stains on the left cooking chamber’s ceiling and the upper heating element’s guard of the Mueller MT-175 Oven.
Mueller 4 Slice Toaster Oven CleanabilityPermanent stains on the left cooking chamber’s ceiling and the upper heating element’s guard of the Mueller MT-175 Oven.
Permanent stains on the right cooking chamber’s ceiling and the upper heating element’s guard of the Mueller MT-175 Oven.
The cleaned grooved silver baking pan of the stainless steel Mueller MT-175 4-Slice Countertop Toaster Oven.
The cleaned enamel broiling rack of the stainless steel Breville BOV845BSS Smart Oven Pro Convection Toaster Oven.
The cleaned enamel broiling rack of the stainless steel Breville BOV845BSS Smart Oven Pro Convection Toaster Oven.
The cleaned enamel baking pan of the stainless steel Breville BOV845BSS Smart Oven Pro Convection Toaster Oven.

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Behind the Comparison

Headshot of Alan Nguyen
Alan NguyenReviewer

Alan Nguyen is a writer and product reviewer at HealthyKitchen101. His major in English language teaching taught him to present concise information. In addition to his cooking hobby, he values the practical aspects of household appliances.

Headshot of Lap Vo
Lap VoTest Lead

Lap is Head of the Research, Testing, and Review Team (RTR Team) at HealthyKitchen101.com, where he directs and supervises the testing of kitchen gadgets and appliances.

Headshot of Tuyet Pham
Tuyet PhamProfessional Chef

Tuyet Pham is an award-winning Saigonese chef passionate about delicious and healthful foods. At HealthyKitchen101, she develops recipes and collaborates with our Research, Testing, and Review lab to evaluate the performance of cooking appliances. Her assessments add a strong authoritative voice to our product scoring process.

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