OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS

Shark IZ400 Review | 52 Data compared

Avg. price:~£220Suction power (AW):142 AWBattery runtime:60 minutesCapacity:0.7 LWeight:4.1 kg

Shark IZ400 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.

7.9

Overall score

Score
7.9/ 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
▼
<55-66-77-88-99-10
▲ Better than 88% of models
Score components

80%

7.9

Technical Score

20%

?

User score

▲Better than 88% of vacuum-cleaners
7.9

Technical Score

Technical score
7.9/ 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
▼
<55-66-77-88-99-10
▲ Better than 88% of models
Score components

28%

6.8

Performance

22%

9.0

Battery

18%

8.2

Filtration

14%

8.1

Attachments

10%

6.9

Design

8%

9.4

Smart features

▲Better than 88% of vacuum-cleaners
?

User score

User score
8.0/ 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
▼
<55-66-77-88-99-10
▼ Worse than 73% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

  • No image
No image

Best prices

    N/A~ £220
*As an Amazon Associate, we earn from qualifying purchases.

Best rankings

Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
Loading category ranking...

Verdict

The Shark Stratos IZ400 is a powerful cordless stick vacuum featuring a 0.7L dust bin, a 25.2V lithium-ion battery providing up to 60 minutes of runtime, and a 3.5-hour charge cycle. It is characterized by Clean Sense IQ technology that automatically adjusts suction based on dirt levels, a DuoClean floorhead for seamless carpet-to-hard-floor transitions, and an Anti-Hair Wrap Plus brush roll to prevent tangles. Pros include its flexible Flexology wand for reaching under furniture, integrated LED headlights, and an anti-odor system that freshens the air while cleaning. Cons include its relatively heavy 4.1kg build for a stick vacuum and a significant drop in battery life to approximately 10 minutes when used in high-power Boost mode.

Technical Specifications of vacuum cleaner Shark IZ400

Technical Score
Technical score
7.9/ 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
▼
<55-66-77-88-99-10
▲ Better than 88% of models
Score components:

28%

6.8

Performance

22%

9.0

Battery

18%

8.2

Filtration

14%

8.1

Attachments

10%

6.9

Design

8%

9.4

Smart features

7.9
Shark IZ400 has a technical score of 7.9 points, which is higher than 87.6% of vacuum cleaners.
User score
User score
8.0/ 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
▼
<55-66-77-88-99-10
▼ Worse than 73% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

?
Popularity
Popularity
1.0/ 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
▼
<55-66-77-88-99-10
▼ Worse than 99% of models
Popularity:
Shark IZ400 has a popularity score of 1 point, which is lower than 61.7% of vacuum cleaners.
1.0
Shark IZ400 has a popularity score of 1 point, which is lower than 61.7% of vacuum cleaners.
Ratio quality/price
Value for money
8.4/ 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
▼
<55-66-77-88-99-10
★ Better than 91% of models
Score components:

60%

7.9

Overall score

40%

9.4

Price

8.4
Shark IZ400 has a value-for-money score of 8.4 points, which is higher than 91.3% of vacuum cleaners.
Suction power (AW)
142 AW
Suction power (AW)
142 AW
▼ Worse than 57% of models
Market range: <40 AW – >280 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
▲ Better than 75% of models
Market range: <11 kPa – >30 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
▲ Better than 74% of models
Market range: <165 W – >899 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.
Show more
Cordless
yes
Cordless
yes
▲ Better than 51% of models
This vacuum cleaner works cordlessly. 49.5% of vacuum cleaners offer cordless operation.
Battery runtime
60 minutes
Battery runtime
60 minutes
▲ Better than 63% of models
Market range: <30 minutes – >70 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
▲ Better than 69% of models
Market range: <3 hours – >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
2,500 mAh
Battery capacity
2,500 mAh
▲ Better than 48% of models
Market range: <2k mAh – >3.6k mAh
This vacuum cleaner has a battery capacity of 2,500 mAh, which is larger than that of 48.1% of vacuum cleaners and equal to that of 24.7% of vacuum cleaners.
Battery voltage
25.2 V
Battery voltage
25.2 V
▲ Better than 56% of models
Market range: <18 V – >28.8 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.
Show more
Filter class
hepa
Filter class
hepa
▼ Worse than 38% of models
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
99.95%
Minimum overall efficiency
99.95%
▼ Worse than 41% of models
Market range: <95 % – >99.99 %
This vacuum cleaner reaches 99.95% minimum overall efficiency, which is higher than that of 32% of vacuum cleaners and equal to that of 26.9% of vacuum cleaners.
Suitable for allergy sufferers
yes
Suitable for allergy sufferers
yes
▲ Better than 18% of models
This vacuum cleaner is suitable for allergy sufferers. 82.4% of vacuum cleaners are allergy-friendly.
Capacity
0.7 L
Capacity
0.7 L
▼ Worse than 63% of models
Market range: <0.44 L – >4 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
▲ Better than 21% of models
This vacuum cleaner uses a bagless design. 78.6% of vacuum cleaners use this setup.
Show more
Main brush type
soft roller
Roller type
multi-surface
Anti-tangle brush
yes
Anti-tangle brush
yes
▲ Better than 74% of models
This vacuum cleaner includes an anti-tangle brush. 25.7% of vacuum cleaners include this feature.
Mini motorized brush
yes
Mini motorized brush
yes
▲ Better than 73% of models
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
▲ Better than 28% of models
This vacuum cleaner is suitable for pet owners. 72% of vacuum cleaners handle pet hair well.
Show more
Vacuum type
stick
Weight
4.1 kg
Weight
4.1 kg
▼ Worse than 57% of models
Market range: <2.15 kg – >7.1 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
▲ Better than 47% of models
This vacuum cleaner offers a 2-in-1 design. 53% of vacuum cleaners offer this flexible format.
Self-standing
no
Self-standing
no
▼ Worse than 19% of models
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
▼ Worse than 47% of models
This vacuum cleaner does not include adjustable tube height. 47.4% of vacuum cleaners offer this ergonomic feature.
Show more
Auto suction adjustment
yes
Auto suction adjustment
yes
▲ Better than 80% of models
This vacuum cleaner supports automatic suction adjustment. 19.9% of vacuum cleaners support this feature.
Dust particle sensor
yes
Dust particle sensor
yes
★ Better than 92% of models
This vacuum cleaner includes a dust particle sensor. 8% of vacuum cleaners include this feature.
LED display
yes
LED display
yes
▲ Better than 74% of models
This vacuum cleaner includes an LED display. 25.9% of vacuum cleaners include this interface feature.
Nozzle light
yes
Nozzle light
yes
▲ Better than 57% of models
This vacuum cleaner includes a nozzle light. 43.4% of vacuum cleaners include this visibility feature.
Mopping support
no
Mopping support
no
▼ Worse than 4% of models
This vacuum cleaner does not support mopping. 3.7% of vacuum cleaners support this multi-function feature.

Shark IZ400 vs the average vacuum cleaner

246810TotalPerformanceBatteryFiltrationAttachmentsDesignSmart features
  • Cordless operation
    Cordless
    yes
    ▲ Better than 51% of models
    This vacuum cleaner works cordlessly, the average vacuum cleaner does not.
  • Includes mini motorized brush
    Mini motorized brush
    yes
    ▲ Better than 73% of models
    This vacuum cleaner includes a mini motorized brush, the average vacuum cleaner does not.
  • Includes anti-tangle brush
    Anti-tangle brush
    yes
    ▲ Better than 74% of models
    This vacuum cleaner includes an anti-tangle brush, the average vacuum cleaner does not.
  • Automatic suction adjustment
    Auto suction adjustment
    yes
    ▲ Better than 80% of models
    This vacuum cleaner supports automatic suction adjustment, the average vacuum cleaner does not.
  • Includes dust particle sensor
    Dust particle sensor
    yes
    ★ Better than 92% of models
    This vacuum cleaner includes a dust particle sensor, the average vacuum cleaner does not.
  • Includes removable battery
    Removable battery
    yes
    ▲ Better than 61% of models
    This vacuum cleaner includes a removable battery, the average vacuum cleaner does not.
  • 4 kPa higher suction pressure
    Suction power (kPa)
    24 kPa
    ▲ Better than 75% of models
    Market range: <11 kPa – >30 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
    ▲ Better than 63% of models
    Market range: <30 minutes – >70 minutes
    This vacuum cleaner offers longer battery runtime than the average vacuum cleaner (60 minutes vs 50 minutes).
    60 minutes vs 50 minutes
  • 9.4% better value for money
    Shark IZ400 offers better value for money than the average vacuum cleaner (8.37 vs 7.6).
    8.37 vs 7.65
  • 4 kPa higher suction pressure
    Suction power (kPa)
    24 kPa
    ▲ Better than 75% of models
    Market range: <11 kPa – >30 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
    ▲ Better than 74% of models
    Market range: <165 W – >899 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
    ▲ Better than 56% of models
    Market range: <1 – >4
    This vacuum cleaner offers more speed levels than the average vacuum cleaner (3 vs 2).
    3 vs 2
  • Cordless operation
    Cordless
    yes
    ▲ Better than 51% of models
    This vacuum cleaner works cordlessly, the average vacuum cleaner does not.
  • Includes removable battery
    Removable battery
    yes
    ▲ Better than 61% of models
    This vacuum cleaner includes a removable battery, the average vacuum cleaner does not.
  • 10 minutes longer runtime
    Battery runtime
    60 minutes
    ▲ Better than 63% of models
    Market range: <30 minutes – >70 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
    ▲ Better than 69% of models
    Market range: <3 hours – >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
    ▲ Better than 53% of models
    This vacuum cleaner includes a battery level indicator, the average vacuum cleaner does not.
  • 3 V higher voltage
    Battery voltage
    25.2 V
    ▲ Better than 56% of models
    Market range: <18 V – >28.8 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
    ▲ Better than 73% of models
    This vacuum cleaner includes a mini motorized brush, the average vacuum cleaner does not.
  • Includes anti-tangle brush
    Anti-tangle brush
    yes
    ▲ Better than 74% of models
    This vacuum cleaner includes an anti-tangle brush, the average vacuum cleaner does not.
  • Includes foldable tube
    Foldable tube
    yes
    ▲ Better than 88% of models
    This vacuum cleaner includes a foldable tube, the average vacuum cleaner does not.
  • 95 mm shallower body
    Depth
    170 mm
    ▲ Better than 89% of models
    Market range: <170 mm – >440 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
    ★ Better than 92% of models
    This vacuum cleaner includes a dust particle sensor, the average vacuum cleaner does not.
  • Automatic suction adjustment
    Auto suction adjustment
    yes
    ▲ Better than 80% of models
    This vacuum cleaner supports automatic suction adjustment, the average vacuum cleaner does not.
  • Includes nozzle light
    Nozzle light
    yes
    ▲ Better than 57% of models
    This vacuum cleaner includes a nozzle light, the average vacuum cleaner does not.
  • Includes LED display
    LED display
    yes
    ▲ Better than 74% of models
    This vacuum cleaner includes an LED display, the average vacuum cleaner does not.
  • More operating noise
    Noise level (Min-Max)
    80-86 dB
    ▼ Worse than 93% of models
    Market range: <65 dB – >83 dB
    This vacuum cleaner is noisier than the average vacuum cleaner (80-86 dB vs 77-77 dB).
    80-86 dB vs 77-77 dB
  • No upholstery nozzle
    Upholstery nozzle
    no
    ▼ Worse than 68% of models
    This vacuum cleaner does not include an upholstery nozzle, the average vacuum cleaner does.
  • No soft dusting brush
    Soft dusting brush
    no
    ▼ Worse than 73% of models
    This vacuum cleaner does not include a soft dusting brush, the average vacuum cleaner does.
  • No cyclonic technology
    Cyclonic technology
    no
    ▼ Worse than 71% of models
    This vacuum cleaner does not use cyclonic technology, the average vacuum cleaner does.
  • 0.3 L smaller dust container
    Capacity
    0.7 L
    ▼ Worse than 63% of models
    Market range: <0.44 L – >4 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
  • 3 minutes shorter turbo runtime
    Turbo mode runtime
    9 minutes
    ▼ Worse than 75% of models
    Market range: <6 minutes – >20 minutes
    This vacuum cleaner offers shorter turbo runtime than the average vacuum cleaner (9 minutes vs 12 minutes).
    9 minutes vs 12 minutes
  • 13.3% higher weight
    Weight
    4.1 kg
    ▼ Worse than 57% of models
    Market range: <2.15 kg – >7.1 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
    ▼ Worse than 57% of models
    Market range: <40 AW – >280 AW
    This vacuum cleaner has lower suction power than the average vacuum cleaner (142 AW vs 150 AW).
    142 AW vs 150 AW
  • 46.7% more expensive
    Shark IZ400 is more expensive than the average vacuum cleaner (£220 vs £150).
    £220 vs £150
  • More operating noise
    Noise level (Min-Max)
    80-86 dB
    ▼ Worse than 93% of models
    Market range: <65 dB – >83 dB
    This vacuum cleaner is noisier than the average vacuum cleaner (80-86 dB vs 77-77 dB).
    80-86 dB vs 77-77 dB
  • No cyclonic technology
    Cyclonic technology
    no
    ▼ Worse than 71% of models
    This vacuum cleaner does not use cyclonic technology, the average vacuum cleaner does.
  • 8 AW lower suction power
    Suction power (AW)
    142 AW
    ▼ Worse than 57% of models
    Market range: <40 AW – >280 AW
    This vacuum cleaner has lower suction power than the average vacuum cleaner (142 AW vs 150 AW).
    142 AW vs 150 AW
  • 3 minutes shorter turbo runtime
    Turbo mode runtime
    9 minutes
    ▼ Worse than 75% of models
    Market range: <6 minutes – >20 minutes
    This vacuum cleaner offers shorter turbo runtime than the average vacuum cleaner (9 minutes vs 12 minutes).
    9 minutes vs 12 minutes
  • 0.3 L smaller dust container
    Capacity
    0.7 L
    ▼ Worse than 63% of models
    Market range: <0.44 L – >4 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
  • No upholstery nozzle
    Upholstery nozzle
    no
    ▼ Worse than 68% of models
    This vacuum cleaner does not include an upholstery nozzle, the average vacuum cleaner does.
  • No soft dusting brush
    Soft dusting brush
    no
    ▼ Worse than 73% of models
    This vacuum cleaner does not include a soft dusting brush, the average vacuum cleaner does.
  • 13.3% higher weight
    Weight
    4.1 kg
    ▼ Worse than 57% of models
    Market range: <2.15 kg – >7.1 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
    ▼ Worse than 66% of models
    Market range: <290 mm – >1.2k 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 IZ400 and other vacuum cleaners

No results found

Third-party reviews

What customers like about Shark IZ400?

  • Excellent suction power across both hard floors and carpets
  • Effective Anti-Hair Wrap Plus technology that stops tangles
  • Clean Sense IQ system that automatically adjusts power based on dirt levels
  • Flexology wand allows for easy bending under furniture and compact storage
  • Good value for money compared to premium competitors like Dyson
  • Deodorising anti-odour cartridge system keeps the exhaust air fresh
  • Removable battery allows for convenient charging away from the main unit
  • Includes a generous five-year manufacturer warranty upon registration

What customers dislike about Shark IZ400?

  • Battery life drains significantly fast (around 10 minutes) when used in Boost mode
  • The handheld unit can feel top-heavy and bulky to hold for long periods
  • No on-board accessory storage to hold attachments while cleaning
  • The pre-motor filter requires regular cleaning to maintain long-term suction
  • Dust container capacity (0.7L) requires frequent emptying during large cleanups

Expert reviews

In-depth analysis and verdict from leading tech publications

T
techradar.com
04/02/2026
Summary of the review
Shark Stratos IZ400 cordless vacuum review - TechRadar
P
parkers.co.uk
26/11/2025
Summary of the review
Shark Stratos Cordless Vacuum Cleaner IZ400UKT Review - Parkers
E
expertreviews.co.uk
10/10/2023
Summary of the review
Shark Stratos IZ400UKT review: A cordless stick that smells as fresh as it cleans | Expert Reviews
T
testsiegertv.com
11/12/2024
Summary of the review
Shark Stratos IZ400DE Cordless Vacuum with Flexology Wand Review
(Translated)Show original
H
haus-garten-test.de
05/09/2023
Summary of the review
11 Cordless Vacuums Tested in 2023
(Translated)Show original
B
bild.de
22/07/2026
Summary of the review
Spring Cleaning 2026: These Top Appliances Get the Job Done
(Translated)Show original
G
global.techradar.com
11/10/2022
Summary of the review
Shark Stratos Cordless IZ862H / IZ400UK Review
(Translated)Show original

Video reviews

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

Compare Shark IZ400 with other vacuum cleaners

1Product to compare no. 1
VS
2Product to compare no. 2
VS
3Product to compare no. 3 (optional)