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Mueller 4 Slice vs Oster 6 Slice Convection Toaster Oven Side-by-Side Comparison

Mueller 4 Slice vs Oster 6 Slice Convection Toaster Oven (TSSTTVMNDG-SHP-2). Their overall scores don’t differ as much as their sizes.

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Mueller 4 Slice

Oster 6 Slice Convection Oven

Mueller 4 Slice vs Oster 6 Slice Convection Toaster Oven

Overall Verdict

6.1
Overall Score
6.7
Overall Score
  • Performance (50%)7.0
  • Design (25%)5.3
  • Usability (25%)5.2
  • Performance (50%)7.0
  • Design (25%)6.2
  • Usability (25%)6.6

Comparing the Mueller 4 Slice (MT-175) to the Oster 6 Slice Convection Toaster Oven (TSSTTVMNDG-SHP-2) brings out some of their interesting strengths and weaknesses. As a small and a large unit respectively, their overall scores don’t differ as much as their sizes.

In terms of design features, the Mueller lacks the convection system and interior light that the Oster has. It does, however, have a detachable crumb tray that’s more suitable for a small unit whereas the Oster has a slide-out one. The Mueller’s analog control dials are precise but the oven doesn’t display the exact timer and temperature like the Oster.

The most impressive aspect about the Mueller is its performance, tying with the Oster and boosting its overall score all the way up. The Mueller was actually better at toasting bread—our most crucial performance test—despite a lower power output.

The Oster was better at baking pizza, roasting whole chicken, and baking fries thanks to its convection system and higher power draw. Regardless, the Mueller didn’t fall too far behind in the pizza and chicken tests.

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
  • Large capacity
  • Easy-to-clean stainless steel exterior
  • Cool-touch door handle
  • Convenient slide-out crumb tray
  • High-contrast digital display
  • Internal lighting available
  • Extra functions
  • No convection fan
  • No internal lighting
  • No safety mechanism for the door
  • Convection fan isn’t all-applicable
  • No safety mechanism for the door
  • Buttons not reliably responsive

Key Specs

Dimensions
L14.96 x W11.61 x H8.86 inches
L19. 68 x W15.19 x H11.61 inches
Weight
9.0 lbs (4.1 kg)
12.1 lbs (5.5 kg)
Control Type
3 control knobs
LCD + 15 buttons
Temperature
150°F - 450°F
150°F - 450°F
Timer
1 minute - 30 minutes + stay-on
1 minute - 90 minutes
Cooking Functions
4
7

Where to Buy?

Price at publication
$64.55
$99.39

*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
7.0

Toast

7.5
6.2
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.
Oster TSSTTVMNDG-SHP-2 ToastFrom left to right, 24 pieces of toast for the top and bottom of three toast levels including lighter, medium, and darker.
On the left: Level 1; In the middle: Level 2; On the right: Level 3
Oster TSSTTVMNDG-SHP-2 ToastFrom 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 Oster TSSTTVMNDG-SHP-2 6-Slice Digital 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
2/6
Cooking Time
4m
6m 43s
Second Batch
4m
4m18
Convection
No
No

Pizza

7.6
8.0
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.
A toaster oven baked 9-inch thick-crust meat pizza with cheese, onions, and green bell peppers on top inside a baking pan.
A 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 melty cheese, meat, and green bell peppers on top baked using a toaster oven.
Function
Toast
Bake
Temperature
450°F
450°F
Cooking Time
9m
6m 50s
Convection
No
Yes

Roasted Whole Chicken

7.0
7.8
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.
A whole roasted chicken using the Oster TSSTTVMNDG-SHP-2 on a broiling rack and enamel baking pan on a white background.
A whole roasted chicken using the Oster TSSTTVMNDG-SHP-2 on a broiling rack and enamel baking pan on a white background.
A tray of whole toaster oven roasted chicken. The thermometer has two probes inside the chicken and displays 190°F and 192°F.
Seven pieces of carved chicken including a carcass, two breasts, two wings, and two thighs on a broiling rack and 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.
Function
Toast
Bake
Temperature
350°F
350°F.
Cooking Time
1h 20m
1h
Convection
No
Yes

Baked French Fries

3.6
6.0
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.
Pieces of baked french fries using the Oster TSSTTVMNDG-SHP-2 Toaster Oven on an enamel baking pan on a white background.
Pieces of baked french fries using the Oster TSSTTVMNDG-SHP-2 Toaster Oven on an enamel baking pan on a white background.
A close-up of pieces of baked french fries using the Oster TSSTTVMNDG-SHP-2 on an enamel baking pan on a white background.
Six 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
20 m
Convection
No
Yes

Design

Overall Design Scoring
5.3
6.2

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.
The Oster TSSTTVMNDG-SHP-2 has 7 cooking functions including Toast, Bake, Convection Bake, Broil, Warm, Defrost, and Pizza.

Exterior

5.0
7.0
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 Oster TSSTTVMNDG-SHP-2 Large Convection Toaster Oven with exterior measurements on a white background.
A closed front of the Oster TSSTTVMNDG-SHP-2 Large Convection Toaster Oven with exterior measurements on a white background.
The front of a closed stainless steel Oster TSSTTVMNDG-SHP-2 6-Slice Large Digital Countertop Convection Toaster Oven
The back and left sides of the Oster TSSTTVMNDG-SHP-2 Large Toaster Oven. The back has a power cord, two buffers, and holes.
On a grey background, the top of the stainless steel Oster TSSTTVMNDG-SHP-2 6-Slice Large Convection Toaster Oven has holes.
On a grey background, the bottom of the Oster TSSTTVMNDG-SHP-2 6-Slice Toaster Oven has a power cord, four stands, and holes.
Weight
9.0 lbs (4.1 kg)
12.1 lbs (5.5 kg)
Length
15.0" (38.0 cm)
19.7" (50.0 cm)
Width
11.6" (29.5 cm)
15.2" (38.6 cm)
Height
8.9" (22.5 cm)
11.6" (29.5 cm)
Material
Stainless steel
Stainless steel
Color
Gray
Black
Door Handle
Cool-touch
cool-touch
Tray Indicators
No
No
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 Oster TSSTTVMNDG-SHP-2 Convection Toaster Oven has an LCD and 15 flat buttons for 7 cooking functions and 8 features.
Type
3 control knobs
LCD display + 15 buttons
Temperature
150°F - 450°F
150°F - 450°F
Timer
1 minute - 30 minutes + stay-on
1 minute - 90 minutes
Indicator Light
Yes
Yes
Status Bar
No
No
Light Toggle
No
Yes
Convection Toggle
No
No
Rotation Toggle
No
No
Automatic Preheat
No
No
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.
The Oster TSSTTVMNDG-SHP-2 has 7 cooking functions including Toast, Bake, Convection Bake, Broil, Warm, Defrost, and Pizza.

Interior

1.0
6.0
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.
The Oster TSSTTVMNDG-SHP-2 Oven’s cooking chamber has 4 nichrome heating elements, 2 guide rails, a light, and a fan cavity.
The Oster TSSTTVMNDG-SHP-2 Oven’s cooking chamber has 4 nichrome heating elements, 2 guide rails, a light, and a fan cavity.
The cooking chamber’s right wall of the Oster TSSTTVMNDG-SHP-2 Toaster Oven has 2 guide rails, a light, and a fan cavity.
Heating Elements
2 quartz
4 nichrome
Convection Fan
No
Yes
Lighting
No
Yes
Tray Levels
2
2
Rotisserie
No
No
Safety Hook
No
No

Power Cord

A two-pronged plug power cord. In the background is the stainless steel Mueller MT-175 4-Slice Countertop Toaster Oven.
A two-pronged plug power cord. In the background is the Oster TSSTTVMNDG-SHP-2 6-Slice Large Digital Convection Toaster Oven.
Length
30.7" (78.0 cm)
26.0" (66.0 cm)
Type
2-prong plug
2-prong plug
Power
1100 W
1300 W
Rated Output
120 V ~ 60 Hz
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 Oster TSSTTVMNDG-SHP-2 6-Slice Digital Convection Toaster Oven on a grey background.
Length
10.5" (26.7 cm)
14.2" (36.1 cm)
Width
8.8" (22.4 cm)
15.0" (38.1 cm)
Height
0.5" (1.3 cm)
0.2" (0.5 cm)
Material
Stainless steel
Stainless steel
Dishwasher Safe
Yes
Yes

Build Quality

8.0
6.0
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 Oster TSSTTVMNDG-SHP-2 Large Convection Toaster Oven with an oven rack, 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 Oster TSSTTVMNDG-SHP-2 Large Convection Toaster Oven with interior measurements on a white background.
Length
10.6" (27.0 cm)
14.2" (36.1 cm)
Width
9.8" (25.0 cm)
12.6" (32.0 cm)
Height
7.5" (19.0 cm)
9.4" (24.0 cm)

Usability

Overall Usability Scoring
5.2
6.6

User Control

6.0
6.0

Easeof Use

4.0
6.0

Cleanability

7.0
9.0
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.
Grease on the glass door of a closed stainless steel Oster TSSTTVMNDG-SHP-2 6-Slice Large Digital Convection Toaster Oven.
Grease on the glass door of a closed stainless steel Oster TSSTTVMNDG-SHP-2 6-Slice Large Digital Convection Toaster Oven.
Grease on the stainless steel Oster TSSTTVMNDG-SHP-2 6-Slice Large Digital Convection Toaster Oven’s cooking chamber wall.
Grease and chicken skin stuck to the enamel baking pan of the Oster TSSTTVMNDG-SHP-2 6-Slice Digital Convection Toaster Oven.
The cleaned enamel baking pan of the stainless steel Oster TSSTTVMNDG-SHP-2 6-Slice Large Digital 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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