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BMW iX2 vs BYD Sealion 7
Selected trimeDrive20 M SportChange trim318 mi · 64.8 kWh · £41,815
Selected trimComfortChange trim300 mi · 82.5 kWh · £44,990
At a glance
In this comparison, BMW iX2 leads on motorway range, running costs and city driving, while the BYD Sealion 7 leads on charging speed.
Which should you choose?
Choose the BMW iX2 if...
- you do long motorway journeys - it has the best estimated real-world range at speed
- you want the lowest running costs - from just 1.7p per mile on off-peak electricity
- you need the best car for city driving and tight parking
Choose the BYD Sealion 7 if...
- you need the fastest charging of these options
How we reached the recommendation
Verdict
Our take
The BMW iX2 leads in the most categories, but each car here has its strengths.
Value
BMW
5.9
BYD
6
Too close to call
Motorway RangeBMW
BMW
5.9
BYD
3.1
Family
BMW
7.7
BYD
8
Too close to call
ChargingBYD
BMW
4.1
BYD
5.9
Cost Per MileBMW
BMW
9.1
BYD
0.8
City DrivingBMW
BMW
4.4
BYD
2.2
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
Key specifications
Compare the key specifications for your selected trims.
| Measure | BMW iX2eDrive20 M Sport | BYD Sealion 7Comfort |
|---|---|---|
| Price | £41,815 (better) | £44,990 |
| Official range | 318 miles (better) | 300 miles |
| Boot space | 525 L (better) | 520 L |
| 10-80% rapid charge | 29 min | 24 min (better) |
| 0-62 mph | 8.6 sec | 6.7 sec (better) |
Size Comparison
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BMW iX2
BYD Sealion 7
Length
BMW iX24,554mm-276mm
BYD Sealion 74,830mm
Width
BMW iX21,845mm-80mm
BYD Sealion 71,925mm
Height
BMW iX21,560mm-60mm
BYD Sealion 71,620mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BMW iX2eDrive20 M Sport | BYD Sealion 7Comfort |
|---|---|---|
| Length | 4,554 mm | 4,830 mm |
| Width (mirrors folded) | 1,845 mm (better) | 1,925 mm |
| Width with mirrors out | Not available | 2,189 mm |
| Height | 1,560 mm | 1,620 mm |
| Turning circle | 11.9 m | 11.7 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 555 mm spare (better) | 475 mm spare |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | BMW iX2eDrive20 M Sport | BYD Sealion 7Comfort |
|---|---|---|
| Seats | 5 | 5 |
| Boot space (seats up) | 525 L (better) | 520 L |
| Boot space (seats down) | 1400 L | 1789 L (better) |
| Frunk | Not available | 58 L |
| Towing capacity (braked) | Not available | 750 kg |
How each stacks up
Percentile ranks against UK EVs of the same body style.
BMW iX2
Not enough peers to make confident percentile claims.
BYD Sealion 7
- One of 33 of 232 UK EVs in our catalogue with V2L (vehicle-to-load) support.
- At 4,830 mm, longer than 80% of SUVs we track.
Full specifications
| Specification |  BMW iX2 eDrive20 M Sport |  BYD Sealion 7 Comfort |
|---|---|---|
| Dimensions | ||
| Length | 4.55m | 4.83m+276mm |
| Width | 1.84m | 1.93m+80mm |
| Width (mirrors) | Not available | 2.19m |
| Height | 1.56m | 1.62m+60mm |
| Wheelbase | 2.69m | 2.93m+238mm |
| Ground Clearance | Not available | 157mm |
| Capacity | ||
| Boot (seats up) | 525L (better) | 520L |
| Boot (seats down) | 1400L | 1789L (better) |
| Frunk | Not available | 58L |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 11.9m | 11.7m (better) |
| Kerb Weight | 1,960kg (better) | 2,225kg |
| Towing Capacity | Not available | 750kg |
| Electric | ||
| Battery | 64.8kWh | 82.5kWh (better) |
| Range (WLTP) | 318 mi (better) | 300 mi |
| Max DC Charge | 130kW | 150kW (better) |
| Pricing | ||
| UK MSRP | £41,815 (better) | £44,990 |
| Price after EV grant | £38,065 (-£3,750) | £44,990 (not eligible) |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2024+ | 2025+ |
* BMW iX2: 11 kW AC is standard; 22 kW AC was an option.
* BMW iX2: Current figure, after a March 2026 efficiency update. Earlier cars: eDrive20 272-283 miles WLTP, xDrive30 259-267 miles WLTP.
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | BMW iX2eDrive20 M Sport | BYD Sealion 7Comfort |
|---|---|---|
| Official range (WLTP) | 318 miles (better) | 300 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 265 miles (better) | 204 miles |
| 10-80% rapid charge time | 29 min | 24 min (better) |
| Max rapid charge rate | 130 kW | 150 kW (better) |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | Not available | 199 Wh/km |
| Usable battery capacity | 64.8 kWh | 82.5 kWh (better) |
| Battery chemistry | NMC | LFP |
| Battery architecture | 400V | Not available |
| Heat pump | Not available | Standard |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | BMW iX2eDrive20 M Sport | BYD Sealion 7Comfort |
|---|---|---|
| 0-62 mph | 8.6 sec | 6.7 sec (better) |
| Power | 150 kW | 230 kW (better) |
| Torque | 250 Nm | 380 Nm (better) |
| Drivetrain | RWD | RWD |
What the critics say
See how UK motoring publications rate each car in their road tests.
BMW iX2
eDrive20 M Sport
BYD Sealion 7
Comfort
6.6/10
average across 6 reviews
- Parkers3.9/5
- Auto Express3.5/5
- Electrifying.com7/10
Watch the reviews
Watch selected video reviews here, or visit each model page for the full collection.
BMW iX2
All 3 videos
Reviews and videos discuss each model overall; the specifications above apply to your selected trims.
Prices & deals
New and used prices
Current pricing and recent used-market behaviour.
| Measure | BMW iX2eDrive20 M Sport | BYD Sealion 7Comfort |
|---|---|---|
| Used market price from | £27,849 | £30,211 |
| Average used price | £29,232 | £30,993 |
| Saving vs RRP | £12,583 below new | £13,997 below new |
| Recent used-price trend | Down 16.5% over ~6 months | Up 11.3% over ~6 months |
Used prices are indicative figures gathered from independent UK dealer listings and change frequently.
Calculate your real costs
For a useful running-cost comparison, factor in your mileage, charging access and current petrol or diesel car alongside the EV estimate.
Compare with petrol or diesel
Compare purchase price, energy, road tax and maintenance with a petrol or diesel alternative.
Calculate company-car tax
Work out monthly Benefit-in-Kind using current and future HMRC rates.
Cost per mile
Compare EV charging costs per mile with petrol and diesel using your charging options.
Check a lease quote
Assess the effective monthly cost alongside the list price and expected depreciation.
Safety & ownership confidence
Euro NCAP - BMW iX2 eDrive20 M Sport
Tested 2022
Adult Occupant85%
Child Occupant88%
Vulnerable Road Users76%
Safety Assist92%
Full result on euroncap.com (opens in new tab)
Euro NCAP - BYD Sealion 7 Comfort
Tested 2025
Adult Occupant87%
Child Occupant93%
Vulnerable Road Users76%
Safety Assist79%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | BMW iX2eDrive20 M Sport | BYD Sealion 7Comfort |
|---|---|---|
| Battery warranty | 8 years | 8 years |
| Battery warranty distance | 160,934 km | 250,000 km (better) |
Buying options
Get a quote
BMW iX2
Used on AutoTraderLease deals
BYD Sealion 7
Used on AutoTraderLease deals
Frequently asked questions
Is the BYD Sealion 7 worth the extra £3,175 over the BMW iX2?
The BYD Sealion 7 costs £3,175 more than the BMW iX2. For that premium it adds 80 kW more power and a 1.9s quicker 0-62mph time. On EVcarsguide's combined category scores, the BMW iX2 comes out ahead overall.
Which is cheaper to own over 5 years, the BMW iX2 or the BYD Sealion 7?
The BMW iX2 is £3,175 cheaper to buy. The BMW iX2 is cheaper to charge, roughly £136 a year versus £216 for the BYD Sealion 7, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the BMW iX2 comes out roughly £3,575 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.
What are the BMW iX2 and BYD Sealion 7 like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 265 miles for the BMW iX2 and 204 miles for the BYD Sealion 7 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The BMW iX2 goes roughly 62 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 24-29 minutes.
Which is easier to park and drive in town, the BMW iX2 or the BYD Sealion 7?
The BMW iX2 is the easier car for tight UK car parks: it is 80 mm narrower than the BYD Sealion 7. In a standard 2,400 mm bay that leaves about 555 mm of total clearance for the BMW iX2 and about 475 mm of total clearance for the BYD Sealion 7.
Which battery will hold up better as a used buy, the BMW iX2 or the BYD Sealion 7?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the BMW iX2 and 90% for the BYD Sealion 7. That gives the BYD Sealion 7 a modest edge in retained real-world range. The BYD Sealion 7's LFP-type pack tolerates daily 100% charging, while the BMW iX2's NMC-type pack lasts longest kept to about 80% for everyday use. Both batteries carry a 8-year manufacturer warranty.
Go deeper on each car
Visit the full model pages for owner feedback, expert reviews, used prices and battery-health information.
Compare against other rivals
Compare similarly sized and priced electric cars before finalising your shortlist.
More BMW iX2 comparisons
More BYD Sealion 7 comparisons
See both cars in our rankings
EVcarsguide scores every verified EV on price, range, family use and running costs. Here is where this pair appears.
Where the BMW iX2 and BYD Sealion 7 rank among the best family EVsWhere the BMW iX2 and BYD Sealion 7 rank among the best electric SUVsWhere the BMW iX2 and BYD Sealion 7 rank among long-range EVsWhere the BMW iX2 and BYD Sealion 7 rank among the best motorway EVsWhere the BMW iX2 and BYD Sealion 7 rank among the best city EVsWhere the BMW iX2 and BYD Sealion 7 rank among the cheapest EVs to run
If neither is quite right
Explore other verified electric cars that may better suit the priorities this pair does not meet.
Further reading
Explore buying and ownership guides to help you choose between these electric cars.
GuideBuying a Used BMW iX2 (2024 on): eDrive20 vs xDrive30, the Grant Price Cut & What to Pay
A used BMW iX2 buyer’s guide: eDrive20 vs xDrive30, the 2026 range update, the July 2026 price cut and £3,750 grant that make a new eDrive20 cheaper than many used ones, recalls, warranty, what owners report, what to pay and a printable checklist.
GuideBuying a Used BYD Sealion 7 (2025 on): Comfort, Design or Excellence & What to Pay
A used BYD Sealion 7 buyer’s guide: Comfort RWD, Design AWD and Excellence AWD, the steep depreciation, BYD’s 8-year battery warranty, charging speeds, real-world range, what owners report and a printable checklist.
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .