Shark IZ400UKT Review | 52 Data compared

Avg. price:~£260Suction power (AW):142 AWBattery runtime:60 minutesCapacity:0.7 LWeight:4.1 kg

Shark IZ400UKT Review: Compare 52 technical specifications and user reviews to see how this product ranks in the Vacuum Cleaners category and whether it is worth buying.

8.2

Overall score

Score
8.2/ 10
✕
What it is
An overall evaluation of the vacuum cleaner's quality, based on technical analysis and user reviews.
When it matters
When you need a quick reference for identifying the best vacuum cleaners on the market.
Score distribution
â–¼
<55-66-77-88-99-10
Score components

80%

8.2

Technical Score

20%

8.4

User score

★Better than 95% of vacuum-cleaners
8.2

Technical Score

Technical score
8.2/ 10
✕
What it is
An assessment of the vacuum cleaner's technical performance across six key areas: performance, battery and power supply, filtration, attachments, design, and smart features.
When it matters
When you want to compare vacuum cleaners by cleaning performance, specifications, and available features.
Score distribution
â–¼
<55-66-77-88-99-10
Score components

28%

6.9

Performance

22%

9.4

Battery

18%

8.2

Filtration

14%

9.2

Attachments

10%

6.9

Design

8%

9.4

Smart features

★Better than 93% of vacuum-cleaners
8.4

User score

User score
8.4/ 10
✕
What it is
A rating that combines user reviews with the total number of reviews received by the vacuum cleaner.
When it matters
When you want to know how a vacuum cleaner performs in everyday use and how reliable owners find it over time.
Score distribution
â–¼
<55-66-77-88-99-10
Score components

70%

8.6

User ratings

30%

8.0

Number of reviews

Based on 711 buyer reviews from online shops.
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
â–²Better than 79% of vacuum-cleaners
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Verdict

The Shark Stratos Pet Pro IZ400UKT is a cordless stick vacuum cleaner featuring a 309-watt motor, a 0.7-litre dust capacity, and a 25.2V removable lithium-ion battery providing up to 60 minutes of runtime on a 3.5-hour charge. Key performance features include a DuoClean floorhead with Anti Hair Wrap Plus, an integrated Anti-Odour cartridge, a flexible Flexology wand for reaching under furniture, an Anti-Allergen Complete Seal, and an automatic dirt-sensing Clean Sense IQ mode. Main advantages include exceptional debris pickup across both hard floors and carpets, hassle-free maintenance without tangled hair, comfortable maneuverability, and a motorized pet tool designed specifically to lift embedded fur. However, notable drawbacks include a battery life that depletes rapidly in maximum boost mode (lasting around 10 minutes), a slightly heavy handheld unit (total weight 4.1kg), and a premium price tag compared to other mid-range models.

Technical Specifications of vacuum cleaner Shark IZ400UKT

Technical Score
Technical score
8.2/ 10
✕
What it is
An assessment of the vacuum cleaner's technical performance across six key areas: performance, battery and power supply, filtration, attachments, design, and smart features.
When it matters
When you want to compare vacuum cleaners by cleaning performance, specifications, and available features.
Score distribution
â–¼
<55-66-77-88-99-10
Score components:

28%

6.9

Performance

22%

9.4

Battery

18%

8.2

Filtration

14%

9.2

Attachments

10%

6.9

Design

8%

9.4

Smart features

8.2
Shark IZ400UKT has a technical score of 8.2 points, which is higher than 93.1% of vacuum cleaners.
User score
User score
8.4/ 10
✕
What it is
A rating that combines user reviews with the total number of reviews received by the vacuum cleaner.
When it matters
When you want to know how a vacuum cleaner performs in everyday use and how reliable owners find it over time.
Score distribution
â–¼
<55-66-77-88-99-10
Score components

70%

8.6

User ratings

30%

8.0

Number of reviews

Based on 711 buyer reviews from online shops.
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
8.4
Shark IZ400UKT has a user score of 8.43 points, which is higher than 78.6% of vacuum cleaners.
Popularity
Popularity
8.0/ 10
✕
What it is
An indicator based on the number of reviews received by the vacuum cleaner.
When it matters
When you prefer a vacuum cleaner that has been chosen and reviewed by many other buyers.
Score distribution
â–¼
<55-66-77-88-99-10
Popularity:
Shark IZ400UKT has a popularity score of 8 points, which is higher than 71.5% of vacuum cleaners.
8.0
Shark IZ400UKT has a popularity score of 8 points, which is higher than 71.5% of vacuum cleaners.
Ratio quality/price
Value for money
8.5/ 10
✕
What it is
An indicator that combines the vacuum cleaner's overall score with its price.
When it matters
When you are looking for a vacuum cleaner with a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
Score components:

60%

8.2

Overall score

40%

9.2

Price

8.5
Shark IZ400UKT has a value-for-money score of 8.5 points, which is higher than 94.8% of vacuum cleaners.
Suction power (AW)
142 AW
Suction power (AW)
142 AW
This vacuum cleaner has a suction power of 142 AW, which is lower than that of 57.3% of vacuum cleaners and equal to that of 1.9% of vacuum cleaners.
Suction power (kPa)
24 kPa
Suction power (kPa)
24 kPa
This vacuum cleaner has a suction pressure of 24 kPa, which is higher than that of 75.3% of vacuum cleaners and equal to that of 2.1% of vacuum cleaners.
Airflow
?
Motor type
brushless
Power consumption
309 W
Power consumption
309 W
This vacuum cleaner draws 309 W, which is lower than the power consumption of 73.8% of vacuum cleaners and equal to that of 1.1% of vacuum cleaners.
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Cordless
yes
Cordless
yes
This vacuum cleaner works cordlessly. 49.5% of vacuum cleaners offer cordless operation.
Battery runtime
60 minutes
Battery runtime
60 minutes
This vacuum cleaner offers a battery runtime of 60 minutes, which is longer than that of 62.8% of vacuum cleaners and equal to that of 22.8% of vacuum cleaners.
Charging time
3.5 hours
Charging time
3.5 hours
This vacuum cleaner charges in 3.5 hours, which is faster than 69.1% of vacuum cleaners and equal to 16.8% of vacuum cleaners.
Battery capacity
?
Battery voltage
25.2 V
Battery voltage
25.2 V
This vacuum cleaner uses a battery voltage of 25.2 V, which is higher than that of 56.5% of vacuum cleaners and equal to that of 23.5% of vacuum cleaners.
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Filter class
hepa
Filter class
hepa
This vacuum cleaner uses filter class hepa, which is more advanced than the class used by 16% of vacuum cleaners and the same as the class used by 46% of vacuum cleaners.
Minimum overall efficiency
99.9%
Minimum overall efficiency
99.9%
This vacuum cleaner reaches 99.9% minimum overall efficiency, which is lower than that of 68.1% of vacuum cleaners and equal to that of 10.6% of vacuum cleaners.
Suitable for allergy sufferers
yes
Suitable for allergy sufferers
yes
This vacuum cleaner is suitable for allergy sufferers. 82.4% of vacuum cleaners are allergy-friendly.
Capacity
0.7 L
Capacity
0.7 L
This vacuum cleaner has a dust capacity of 0.7 L, which is smaller than that of 62.8% of vacuum cleaners and equal to that of 5.9% of vacuum cleaners.
Bagless
yes
Bagless
yes
This vacuum cleaner uses a bagless design. 78.6% of vacuum cleaners use this setup.
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Main brush type
soft roller
Roller type
multi-surface
Anti-tangle brush
yes
Anti-tangle brush
yes
This vacuum cleaner includes an anti-tangle brush. 25.7% of vacuum cleaners include this feature.
Mini motorized brush
yes
Mini motorized brush
yes
This vacuum cleaner includes a mini motorized brush. 26.9% of vacuum cleaners include this attachment.
Suitable for pet owners
yes
Suitable for pet owners
yes
This vacuum cleaner is suitable for pet owners. 72% of vacuum cleaners handle pet hair well.
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Vacuum type
stick
Weight
4.1 kg
Weight
4.1 kg
This vacuum cleaner weighs 4.1 kg, which is greater than the weight of 57.2% of vacuum cleaners and equal to that of 1.5% of vacuum cleaners.
2-in-1 design
yes
2-in-1 design
yes
This vacuum cleaner offers a 2-in-1 design. 53% of vacuum cleaners offer this flexible format.
Self-standing
no
Self-standing
no
This vacuum cleaner does not stand on its own. 18.9% of vacuum cleaners offer this convenience.
Adjustable tube height
no
Adjustable tube height
no
This vacuum cleaner does not include adjustable tube height. 47.4% of vacuum cleaners offer this ergonomic feature.
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Auto suction adjustment
yes
Auto suction adjustment
yes
This vacuum cleaner supports automatic suction adjustment. 19.9% of vacuum cleaners support this feature.
Dust particle sensor
yes
Dust particle sensor
yes
This vacuum cleaner includes a dust particle sensor. 8% of vacuum cleaners include this feature.
LED display
yes
LED display
yes
This vacuum cleaner includes an LED display. 25.9% of vacuum cleaners include this interface feature.
Nozzle light
yes
Nozzle light
yes
This vacuum cleaner includes a nozzle light. 43.4% of vacuum cleaners include this visibility feature.
Mopping support
no
Mopping support
no
This vacuum cleaner does not support mopping. 3.7% of vacuum cleaners support this multi-function feature.

Shark IZ400UKT vs the average vacuum cleaner

246810TotalPerformanceBatteryFiltrationAttachmentsDesignSmart features
  • Cordless operation
    Cordless
    yes
    This vacuum cleaner works cordlessly, the average vacuum cleaner does not.
  • Includes mini motorized brush
    Mini motorized brush
    yes
    This vacuum cleaner includes a mini motorized brush, the average vacuum cleaner does not.
  • Includes anti-tangle brush
    Anti-tangle brush
    yes
    This vacuum cleaner includes an anti-tangle brush, the average vacuum cleaner does not.
  • Automatic suction adjustment
    Auto suction adjustment
    yes
    This vacuum cleaner supports automatic suction adjustment, the average vacuum cleaner does not.
  • Includes dust particle sensor
    Dust particle sensor
    yes
    This vacuum cleaner includes a dust particle sensor, the average vacuum cleaner does not.
  • Includes removable battery
    Removable battery
    yes
    This vacuum cleaner includes a removable battery, the average vacuum cleaner does not.
  • 4 kPa higher suction pressure
    Suction power (kPa)
    24 kPa
    This vacuum cleaner has higher suction pressure than the average vacuum cleaner (24 kPa vs 20 kPa).
    24 kPa vs 20 kPa
  • 10 minutes longer runtime
    Battery runtime
    60 minutes
    This vacuum cleaner offers longer battery runtime than the average vacuum cleaner (60 minutes vs 50 minutes).
    60 minutes vs 50 minutes
  • 11.3% better value for money
    Shark IZ400UKT offers better value for money than the average vacuum cleaner (8.51 vs 7.6).
    8.51 vs 7.65
  • 5.4% higher user score
    User score
    8.4/ 10
    ✕
    What it is
    A rating that combines user reviews with the total number of reviews received by the vacuum cleaner.
    When it matters
    When you want to know how a vacuum cleaner performs in everyday use and how reliable owners find it over time.
    Score distribution
    â–¼
    â–¼
    <55-66-77-88-99-10
    Shark IZ400UKT
    the average vacuum cleaner
    Shark IZ400UKT has a higher user score than the average vacuum cleaner (8.43 vs 8.000).
    8.43 vs 8
  • 4 kPa higher suction pressure
    Suction power (kPa)
    24 kPa
    This vacuum cleaner has higher suction pressure than the average vacuum cleaner (24 kPa vs 20 kPa).
    24 kPa vs 20 kPa
  • 291 W lower power consumption
    Power consumption
    309 W
    This vacuum cleaner draws less power than the average vacuum cleaner (309 W vs 600 W).
    309 W vs 600 W
  • 1 more power levels
    Number of speeds
    3
    This vacuum cleaner offers more speed levels than the average vacuum cleaner (3 vs 2).
    3 vs 2
  • 20 mm wider cleaning path
    Cleaning path width
    280 mm
    This vacuum cleaner has a wider cleaning path than the average vacuum cleaner (280 mm vs 260 mm).
    280 mm vs 260 mm
  • Cordless operation
    Cordless
    yes
    This vacuum cleaner works cordlessly, the average vacuum cleaner does not.
  • Includes removable battery
    Removable battery
    yes
    This vacuum cleaner includes a removable battery, the average vacuum cleaner does not.
  • 10 minutes longer runtime
    Battery runtime
    60 minutes
    This vacuum cleaner offers longer battery runtime than the average vacuum cleaner (60 minutes vs 50 minutes).
    60 minutes vs 50 minutes
  • 0.5 hours faster charging
    Charging time
    3.5 hours
    This vacuum cleaner charges faster than the average vacuum cleaner (3.5 hours vs 4 hours).
    3.5 hours vs 4 hours
  • Includes battery indicator
    Battery level indicator
    yes
    This vacuum cleaner includes a battery level indicator, the average vacuum cleaner does not.
  • 3 V higher voltage
    Battery voltage
    25.2 V
    This vacuum cleaner has a higher battery voltage than the average vacuum cleaner (25.2 V vs 22.2 V).
    25.2 V vs 22.2 V
  • Includes mini motorized brush
    Mini motorized brush
    yes
    This vacuum cleaner includes a mini motorized brush, the average vacuum cleaner does not.
  • Includes anti-tangle brush
    Anti-tangle brush
    yes
    This vacuum cleaner includes an anti-tangle brush, the average vacuum cleaner does not.
  • Includes foldable tube
    Foldable tube
    yes
    This vacuum cleaner includes a foldable tube, the average vacuum cleaner does not.
  • 95 mm shallower body
    Depth
    170 mm
    This vacuum cleaner is less deep than the average vacuum cleaner (170 mm vs 265 mm).
    170 mm vs 265 mm
  • Includes dust particle sensor
    Dust particle sensor
    yes
    This vacuum cleaner includes a dust particle sensor, the average vacuum cleaner does not.
  • Automatic suction adjustment
    Auto suction adjustment
    yes
    This vacuum cleaner supports automatic suction adjustment, the average vacuum cleaner does not.
  • Includes nozzle light
    Nozzle light
    yes
    This vacuum cleaner includes a nozzle light, the average vacuum cleaner does not.
  • Includes LED display
    LED display
    yes
    This vacuum cleaner includes an LED display, the average vacuum cleaner does not.
  • More operating noise
    Noise level (Min-Max)
    86-86 dB
    This vacuum cleaner is noisier than the average vacuum cleaner (86-86 dB vs 77-77 dB).
    86-86 dB vs 77-77 dB
  • No cyclonic technology
    Cyclonic technology
    no
    This vacuum cleaner does not use cyclonic technology, the average vacuum cleaner does.
  • 0.3 L smaller dust container
    Capacity
    0.7 L
    This vacuum cleaner has a smaller dust capacity than the average vacuum cleaner (0.7 L vs 1 L).
    0.7 L vs 1 L
  • 0.05 % lower filtration efficiency
    Minimum overall efficiency
    99.9 %
    This vacuum cleaner has lower filtration efficiency than the average vacuum cleaner (99.9 % vs 99.95 %).
    99.9 % vs 99.95 %
  • 2 minutes shorter turbo runtime
    Turbo mode runtime
    10 minutes
    This vacuum cleaner offers shorter turbo runtime than the average vacuum cleaner (10 minutes vs 12 minutes).
    10 minutes vs 12 minutes
  • 13.3% higher weight
    Weight
    4.1 kg
    This vacuum cleaner is heavier than the average vacuum cleaner (4.1 kg vs 3.62 kg).
    4.1 kg vs 3.62 kg
  • 8 AW lower suction power
    Suction power (AW)
    142 AW
    This vacuum cleaner has lower suction power than the average vacuum cleaner (142 AW vs 150 AW).
    142 AW vs 150 AW
  • 73.3% more expensive
    Shark IZ400UKT is more expensive than the average vacuum cleaner (£260 vs £150).
    £260 vs £150
  • 73.3% more expensive
    Shark IZ400UKT is more expensive than the average vacuum cleaner (£260 vs £150).
    £260 vs £150
  • More operating noise
    Noise level (Min-Max)
    86-86 dB
    This vacuum cleaner is noisier than the average vacuum cleaner (86-86 dB vs 77-77 dB).
    86-86 dB vs 77-77 dB
  • No cyclonic technology
    Cyclonic technology
    no
    This vacuum cleaner does not use cyclonic technology, the average vacuum cleaner does.
  • 8 AW lower suction power
    Suction power (AW)
    142 AW
    This vacuum cleaner has lower suction power than the average vacuum cleaner (142 AW vs 150 AW).
    142 AW vs 150 AW
  • 2 minutes shorter turbo runtime
    Turbo mode runtime
    10 minutes
    This vacuum cleaner offers shorter turbo runtime than the average vacuum cleaner (10 minutes vs 12 minutes).
    10 minutes vs 12 minutes
  • 0.3 L smaller dust container
    Capacity
    0.7 L
    This vacuum cleaner has a smaller dust capacity than the average vacuum cleaner (0.7 L vs 1 L).
    0.7 L vs 1 L
  • 0.05 % lower filtration efficiency
    Minimum overall efficiency
    99.9 %
    This vacuum cleaner has lower filtration efficiency than the average vacuum cleaner (99.9 % vs 99.95 %).
    99.9 % vs 99.95 %
  • 13.3% higher weight
    Weight
    4.1 kg
    This vacuum cleaner is heavier than the average vacuum cleaner (4.1 kg vs 3.62 kg).
    4.1 kg vs 3.62 kg
  • 40 mm taller body
    Height
    1,140 mm
    This vacuum cleaner is taller than the average vacuum cleaner (1140 mm vs 1100 mm).
    1,140 mm vs 1,100 mm

Graphic comparison of Shark IZ400UKT and other vacuum cleaners

No results found

Third-party reviews

Based on 711 buyer reviews from online shops.
Reviews last updated: July 2026 · How we calculate this

What customers like about Shark IZ400UKT?

  • Excellent suction power on both carpets and hard floors
  • Highly effective Anti-Hair Wrap Plus technology that prevents tangles
  • Clean Sense IQ system automatically adjusts power based on dirt levels
  • Flexology wand bends easily to clean under low furniture
  • Folds completely in half for compact, self-standing storage
  • Anti-Odor technology keeps the vacuum smelling fresh during use
  • Removable battery allows for convenient charging anywhere
  • Useful pet tool attachment effectively pulls up embedded animal hair

What customers dislike about Shark IZ400UKT?

  • Feels top-heavy and bulky when detached for handheld cleaning
  • Battery life drains very quickly when operated in maximum Boost mode
  • The floor head has a tendency to lift slightly when pulled backward
  • Lacks a dedicated wall mount or a freestanding charging dock
  • The included instructional user manual is too basic and unhelpful
  • The anti-odor cartridge requires recurring replacement purchases
  • The large floor head can be a tight squeeze in very narrow spaces

Expert reviews

In-depth analysis and verdict from leading tech publications

E
expertreviews.co.uk
10/10/2023
Summary of the review
P
parkers.co.uk
26/11/2025
Summary of the review
T
techradar.com
04/02/2026
Summary of the review
H
haus-garten-test.de
05/09/2023
Summary of the review
L
lesnumeriques.com
19/12/2022
Summary of the review
G
global.techradar.com
11/10/2022
Summary of the review

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

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