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BMW iX3 vs BYD Sealion 7 comparison

Compare performance (469 HP vs 530 HP), boot space and price (54,300 £ vs 42,800 £ ) at a glance. Find out which car is the better choice for you – BMW iX3 or BYD Sealion 7?

BMW iX3 vs BYD Sealion 7: Key differences

BMW iX3

4.6 (4 Reviews)
rate
  • clearly more efficient
  • markedly more electric range
details

BYD Sealion 7

4.9 (3 Reviews)
rate
  • noticeably cheaper
  • slightly more power
  • only slightly quicker 0–100 km/h
  • very slightly lighter
details

All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

By Achim Sedelmaier

Here’s where it gets real: The technical differences in detail

iX3

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

BYD Sealion 7 is noticeably cheaper – starting at 42,800 £ , while the BMW iX3 costs 54,300 £ . That’s a price difference of around 11,494 £.

In terms of energy consumption, the BMW iX3 is clearly more efficient: consuming 14.6 kWh/100km compared to 19.9 kWh/100km for the BYD Sealion 7. That’s a difference of about 5.3 kWh/100km.

As for electric range, the BMW iX3 offers markedly more range – reaching up to 805 km, about 303 km more than the BYD Sealion 7.

Sealion 7

Engine and Performance:

Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the BYD Sealion 7 offers slightly more power – delivering 530 HP compared to 469 HP. That’s roughly 61 HP more horsepower.

When accelerating from 0 to 100 km/h, the BYD Sealion 7 is only slightly quicker – completing the sprint in 4.5 s, while the BMW iX3 takes 4.9 s. That’s about 0.4 s quicker.

There’s also a difference in torque: the BYD Sealion 7 delivers barely more torque with 690 Nm compared to 645 Nm. That’s about 45 Nm more.

iX3

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In terms of curb weight, BYD Sealion 7 is very slightly lighter – 2,225 kg compared to 2,360 kg. The difference is around 135 kg.

When it comes to payload, the BMW iX3 carries a bit more – 465 kg compared to 410 kg. That’s a difference of about 55 kg.

Who wins the race in the data check?

The BMW iX3 sits just ahead overall in the objective data comparison.
This result only shows which model scores more points on paper – not which of the two cars feels right for you.

from £54,300
iX3

BMW iX3

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Rear-Wheel Drive
  • Power HP 320 - 469 HP
  • Consumption kWh/100km 14.6 - 15.1 kWh/100km
  • Electric Range 635 - 805 km
details

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BMW iX3
BYD Sealion 7

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW iX3

The BMW iX3 is an electric SUV that delivers the composed, premium driving experience BMW buyers expect. With a calm, refined cabin and practical everyday usability, it’s a strong choice for those who want electric motoring without giving up luxury and comfort.

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Reviews BMW iX3

4.6 (4 Reviews)
rate
Johan
20 Sept 2025, 16:15:37

Nice range, fast charging and… bidirectional charging!!

BYD Sealion 7

The BYD Sealion 7 is a sleek electric wagon that blends sporty styling with surprising practicality, making it a compelling choice for drivers who want something different from the usual hatchback or SUV. Its refined interior and composed road manners give it an upscale feel, while clever packaging keeps it versatile for daily use.

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byd-sealion-7-12

Reviews BYD Sealion 7

4.9 (3 Reviews)
rate
Steinbach
2 Jun 2026, 11:36:25

Fantastic car in every respect. Looks, interior, power, range, comfort, finish, etc.

How do you mainly use this car? (optional): Company car / Business
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
oriol
27 Feb 2026, 15:33:27

range that I can always charge to 100% — unlike other brands that told me it was recommended to stop at 80%, which consequently cut my real range from 600 to 480 by not being able to charge to 100%. I think that's something people should know.

How do you mainly use this car? (optional): Commuter (short/medium distance)
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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BMW iX3
BYD Sealion 7

Costs and Consumption
Price
54,300 - 66,300 £
Price
42,800 - 52,300 £
Consumption L/100km
-
Consumption L/100km
-
Consumption kWh/100km
14.6 - 15.1 kWh/100km
Consumption kWh/100km
19.9 - 21.9 kWh/100km
Electric Range
635 - 805 km
Electric Range
456 - 502 km
Battery Capacity
-
Battery Capacity
-
co2
0 g/km
co2
0 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
2,360 kg
Curb weight
2,225 - 2,435 kg
Trunk capacity
-
Trunk capacity
520 L
Length
-
Length
-
Width
1,895 mm
Width
1,925 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
465 kg
Payload
410 kg

Engine and Performance
Engine Type
Electric
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Reduction Gearbox
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
320 - 469 HP
Power HP
313 - 530 HP
Acceleration 0-100km/h
4.9 - 5.9 s
Acceleration 0-100km/h
4.5 - 6.7 s
Max Speed
-
Max Speed
-
Torque
500 - 645 Nm
Torque
380 - 690 Nm
Number of Cylinders
-
Number of Cylinders
-
Power kW
235 - 345 kW
Power kW
230 - 390 kW
Engine capacity
-
Engine capacity
-

General
Model Year
2026
Model Year
2024
CO2 Efficiency Class
A
CO2 Efficiency Class
A
Brand
BMW
Brand
BYD
What drive types are available for the BMW iX3?

Available configurations include All-Wheel Drive or Rear-Wheel Drive.

DriveDuel uses data analysis and artificial intelligence to evaluate vehicle data and create content. Content is regularly reviewed and improved. The displayed prices are estimates based on German list prices, adjusted to the respective country’s VAT. Country-specific registration taxes are not included. This information is not legally binding.