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BYD Sealion 7 vs DS N°8
Selected trimComfortChange trim300 mi · 82.5 kWh · £44,990
Selected trimFWDChange trim341 mi · 74 kWh · £50,790
At a glance
In this comparison, BYD Sealion 7 leads on value for money, while the DS N°8 leads on motorway range and running costs.
Which should you choose?
Choose the BYD Sealion 7 if...
- you want the most for your money - best overall spec per pound
Choose the DS N°8 if...
- you do long motorway journeys - it has the best estimated real-world range at speed
- you want the lowest running costs - from just 1.8p per mile on off-peak electricity
How we reached the recommendation
Verdict
Our take
The DS N°8 edges ahead overall, but it's close - check which categories matter most to you.
ValueBYD
BYD
6
DS
5.4
Motorway RangeDS
BYD
3.1
DS
6.8
Family
BYD
8
DS
7.8
Too close to call
Charging
BYD
5.9
DS
5.7
Too close to call
Cost Per MileDS
BYD
0.8
DS
8.4
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 | BYD Sealion 7Comfort | DS N°8FWD |
|---|---|---|
| Price | £44,990 (better) | £50,790 |
| Official range | 300 miles | 341 miles (better) |
| Boot space | 520 L | 560 L (better) |
| 10-80% rapid charge | 24 min (better) | 27 min |
| 0-62 mph | 6.7 sec (better) | 7.7 sec |
Size Comparison
View:
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BYD Sealion 7
DS N°8
Length
BYD Sealion 74,830mm
DS N°84,810mm-20mm
Width
BYD Sealion 71,925mm
DS N°81,905mm-20mm
Height
BYD Sealion 71,620mm
DS N°81,580mm-40mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BYD Sealion 7Comfort | DS N°8FWD |
|---|---|---|
| Length | 4,830 mm | 4,810 mm |
| Width (mirrors folded) | 1,925 mm | 1,905 mm (better) |
| Width with mirrors out | 2,189 mm | Not available |
| Height | 1,620 mm | 1,580 mm |
| Turning circle | 11.7 m | Not available |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 475 mm spare | 495 mm spare (better) |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | BYD Sealion 7Comfort | DS N°8FWD |
|---|---|---|
| Seats | 5 | 5 |
| Boot space (seats up) | 520 L | 560 L (better) |
| Boot space (seats down) | 1789 L | Not available |
| Frunk | 58 L | Not available |
| Towing capacity (braked) | 750 kg | Not available |
How each stacks up
Percentile ranks against UK EVs of the same body style.
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.
DS N°8
Not enough peers to make confident percentile claims.
Full specifications
| Specification |  BYD Sealion 7 Comfort |  DS N°8 FWD |
|---|---|---|
| Dimensions | ||
| Length | 4.83m | 4.81m-20mm |
| Width | 1.93m | 1.91m-20mm |
| Width (mirrors) | 2.19m | Not available |
| Height | 1.62m | 1.58m-40mm |
| Wheelbase | 2.93m | 2.90m-30mm |
| Ground Clearance | 157mm | Not available |
| Capacity | ||
| Boot (seats up) | 520L | 560L (better) |
| Boot (seats down) | 1789L | Not available |
| Frunk | 58L | Not available |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 11.7m | Not available |
| Kerb Weight | 2,225kg | 2,080kg (better) |
| Towing Capacity | 750kg | Not available |
| Electric | ||
| Battery | 82.5kWh (better) | 74kWh |
| Range (WLTP) | 300 mi | 341 mi (better) |
| Max DC Charge | 150kW | 160kW (better) |
| Pricing | ||
| UK MSRP | £44,990 (better) | £50,790 |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2025+ | 2025+ |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | BYD Sealion 7Comfort | DS N°8FWD |
|---|---|---|
| Official range (WLTP) | 300 miles | 341 miles (better) |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 204 miles | 285 miles (better) |
| 10-80% rapid charge time | 24 min (better) | 27 min |
| Max rapid charge rate | 150 kW | 160 kW (better) |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | 199 Wh/km | Not available |
| Usable battery capacity | 82.5 kWh (better) | 74 kWh |
| Battery chemistry | LFP | NMC |
| Battery architecture | Not available | 400V |
| Heat pump | Standard | Not available |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | BYD Sealion 7Comfort | DS N°8FWD |
|---|---|---|
| 0-62 mph | 6.7 sec (better) | 7.7 sec |
| Power | 230 kW (better) | 169 kW |
| Torque | 380 Nm (better) | 345 Nm |
| Drivetrain | RWD | FWD |
What the critics say
See how UK motoring publications rate each car in their road tests. One car has more review coverage than the other - we show that rather than guessing.
BYD Sealion 7
Comfort
6.6/10
average across 6 reviews
- Parkers3.9/5
- Auto Express3.5/5
- Electrifying.com7/10
DS N°8
FWD
No critic reviews gathered yet for this car.
Watch the reviews
Watch selected video reviews here, or visit each model page for the full collection.
BYD Sealion 7
All 3 videos
Reviews and videos discuss each model overall; the specifications above apply to your selected trims.
Prices & deals
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 - BYD Sealion 7 Comfort
Tested 2025
Adult Occupant87%
Child Occupant93%
Vulnerable Road Users76%
Safety Assist79%
Full result on euroncap.com (opens in new tab)
Euro NCAP - DS N°8 FWD
Tested 2025
Adult Occupant76%
Child Occupant85%
Vulnerable Road Users80%
Safety Assist65%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | BYD Sealion 7Comfort | DS N°8FWD |
|---|---|---|
| Battery warranty | 8 years | Not available |
| Battery warranty distance | 250,000 km | Not available |
Buying options
Get a quote
BYD Sealion 7
Used on AutoTraderLease deals
DS N°8
Used on AutoTraderLease deals
Frequently asked questions
Is the DS N°8 worth the extra £5,800 over the BYD Sealion 7?
The DS N°8 costs £5,800 more than the BYD Sealion 7. For that premium it adds 41 miles more WLTP range. The BYD Sealion 7 is not just cheaper - it also offers 61 kW more power and a 1.0s quicker 0-62mph time. On EVcarsguide's combined category scores, the DS N°8 comes out ahead overall.
Which is cheaper to own over 5 years, the BYD Sealion 7 or the DS N°8?
The BYD Sealion 7 is £5,800 cheaper to buy. The DS N°8 is cheaper to charge, roughly £144 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 BYD Sealion 7 comes out roughly £5,440 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.
What are the BYD Sealion 7 and DS N°8 like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 204 miles for the BYD Sealion 7 and 285 miles for the DS N°8 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The DS N°8 goes roughly 81 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 24-27 minutes.
Which is easier to park and drive in town, the BYD Sealion 7 or the DS N°8?
The two are within 20 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 495 mm of total clearance for the DS N°8 and about 475 mm of total clearance for the BYD Sealion 7.
Which battery will hold up better as a used buy, the BYD Sealion 7 or the DS N°8?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 90% battery health for the BYD Sealion 7 and 84% for the DS N°8. 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 DS N°8's NMC-type pack lasts longest kept to about 80% for everyday use.
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 BYD Sealion 7 comparisons
More DS N°8 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 BYD Sealion 7 and DS N°8 rank among the best family EVsWhere the BYD Sealion 7 and DS N°8 rank among the best electric SUVsWhere the BYD Sealion 7 and DS N°8 rank among long-range EVsWhere the BYD Sealion 7 and DS N°8 rank among the best motorway EVsWhere the BYD Sealion 7 and DS N°8 rank among the best city EVsWhere the BYD Sealion 7 and DS N°8 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.
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .