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BYD Sealion 7 vs DS 3 E-Tense
Selected trimComfortChange trim300 mi · 82.5 kWh · £44,990
Selected trimPallasChange trim248 mi · 54 kWh · £36,995
At a glance
In this comparison, BYD Sealion 7 leads on value for money, family practicality and charging speed, while the DS 3 E-Tense leads on motorway range, running costs and city driving.
Which should you choose?
Choose the BYD Sealion 7 if...
- you want the most for your money - best overall spec per pound
- you need the most family-friendly option with good safety and space
- you need the fastest charging of these options
Choose the DS 3 E-Tense if...
- you do long motorway journeys - it has the best estimated real-world range at speed
- you want the lowest running costs - from just 1.9p per mile on off-peak electricity
- you need the best car for city driving and tight parking
How we reached the recommendation
Verdict
Our take
The DS 3 E-Tense leads in the most categories, but each car here has its strengths.
ValueBYD
BYD
6
DS
4.5
Motorway RangeDS
BYD
3.1
DS
4.5
FamilyBYD
BYD
8
DS
1.9
ChargingBYD
BYD
5.9
DS
3
Cost Per MileDS
BYD
0.8
DS
8.2
City DrivingDS
BYD
2.2
DS
7.4
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
BYD Sealion 7
Comfort
- 52 miles more WLTP range
- 170 litres more boot space
- 50 kW faster rapid charging
- 115 kW more power
- 2.3s quicker 0-62 mph
- 750 kg more towing capacity
Key specifications
Compare the key specifications for your selected trims.
| Measure | BYD Sealion 7Comfort | DS 3 E-TensePallas |
|---|---|---|
| Price | £44,990 | £36,995 (better) |
| Official range | 300 miles (better) | 248 miles |
| Boot space | 520 L (better) | 350 L |
| 10-80% rapid charge | 24 min (better) | 30 min |
| 0-62 mph | 6.7 sec (better) | 9 sec |
Size Comparison
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BYD Sealion 7
DS 3 E-Tense
Length
BYD Sealion 74,830mm
DS 3 E-Tense4,118mm-712mm
Width
BYD Sealion 71,925mm
DS 3 E-Tense1,802mm-123mm
Height
BYD Sealion 71,620mm
DS 3 E-Tense1,534mm-86mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BYD Sealion 7Comfort | DS 3 E-TensePallas |
|---|---|---|
| Length | 4,830 mm | 4,118 mm |
| Width (mirrors folded) | 1,925 mm | 1,802 mm (better) |
| Width with mirrors out | 2,189 mm | 1,988 mm (better) |
| Height | 1,620 mm | 1,534 mm |
| Turning circle | 11.7 m | 10.7 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 475 mm spare | 598 mm spare (better) |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | BYD Sealion 7Comfort | DS 3 E-TensePallas |
|---|---|---|
| Seats | 5 | 5 |
| Boot space (seats up) | 520 L (better) | 350 L |
| Boot space (seats down) | 1789 L (better) | 1050 L |
| Frunk | 58 L | Not available |
| Towing capacity (braked) | 750 kg (better) | 0 kg |
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 3 E-Tense
Not enough peers to make confident percentile claims.
Full specifications
| Specification |  BYD Sealion 7 Comfort |  DS 3 E-Tense Pallas |
|---|---|---|
| Dimensions | ||
| Length | 4.83m | 4.12m-712mm |
| Width | 1.93m | 1.80m-123mm |
| Width (mirrors) | 2.19m | 1.99m-201mm |
| Height | 1.62m | 1.53m-86mm |
| Wheelbase | 2.93m | 2.56m-372mm |
| Ground Clearance | 157mm | 170mm+13mm |
| Capacity | ||
| Boot (seats up) | 520L (better) | 350L |
| Boot (seats down) | 1789L (better) | 1050L |
| Frunk | 58L | Not available |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 11.7m | 10.7m (better) |
| Kerb Weight | 2,225kg | 1,550kg (better) |
| Towing Capacity | 750kg (better) | Not available |
| Electric | ||
| Battery | 82.5kWh (better) | 54kWh |
| Range (WLTP) | 300 mi (better) | 248 mi |
| Max DC Charge | 150kW (better) | 100kW |
| Pricing | ||
| UK MSRP | £44,990 | £36,995 (better) |
| Price after EV grant | £44,990 (not eligible) | £35,495 (-£1,500) |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2025+ | 2023+ |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | BYD Sealion 7Comfort | DS 3 E-TensePallas |
|---|---|---|
| Official range (WLTP) | 300 miles (better) | 248 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 204 miles | 207 miles (better) |
| 10-80% rapid charge time | 24 min (better) | 30 min |
| Max rapid charge rate | 150 kW (better) | 100 kW |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | 199 Wh/km | Not available |
| Usable battery capacity | 82.5 kWh (better) | 50.8 kWh |
| Battery chemistry | LFP | Not available |
| 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 3 E-TensePallas |
|---|---|---|
| 0-62 mph | 6.7 sec (better) | 9 sec |
| Power | 230 kW (better) | 115 kW |
| Torque | 380 Nm (better) | 260 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 3 E-Tense
Pallas
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.
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)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | BYD Sealion 7Comfort | DS 3 E-TensePallas |
|---|---|---|
| Battery warranty | 8 years | 8 years |
| Battery warranty distance | 250,000 km (better) | 160,934 km |
Buying options
Get a quote
BYD Sealion 7
Used on AutoTraderLease deals
DS 3 E-Tense
Used on AutoTraderLease deals
Frequently asked questions
Is the BYD Sealion 7 worth the extra £7,995 over the DS 3 E-Tense?
The BYD Sealion 7 costs £7,995 more than the DS 3 E-Tense. For that premium it adds 52 miles more WLTP range, 50 kW faster peak rapid charging and 170 litres more boot space. On EVcarsguide's combined category scores, the DS 3 E-Tense comes out ahead overall.
Which is cheaper to own over 5 years, the BYD Sealion 7 or the DS 3 E-Tense?
The DS 3 E-Tense is £7,995 cheaper to buy. The DS 3 E-Tense is cheaper to charge, roughly £152 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 DS 3 E-Tense comes out roughly £8,315 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 3 E-Tense like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 204 miles for the BYD Sealion 7 and 207 miles for the DS 3 E-Tense - effectively matched, and both well below their WLTP figures because sustained high speed is the hardest case for an EV. Both rapid-charge to 80% in a similar time, around 24-30 minutes.
Which is easier to park and drive in town, the BYD Sealion 7 or the DS 3 E-Tense?
The DS 3 E-Tense is the easier car for tight UK car parks: it is 123 mm narrower than the BYD Sealion 7. In a standard 2,400 mm bay that leaves about 598 mm of total clearance for the DS 3 E-Tense and about 475 mm of total clearance for the BYD Sealion 7. The DS 3 E-Tense also turns in a 1.0 m tighter circle, which helps with U-turns and multi-storey ramps.
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 3 E-Tense 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 3 E-Tense rank among the best family EVsWhere the BYD Sealion 7 and DS 3 E-Tense rank among the best electric SUVsWhere the BYD Sealion 7 and DS 3 E-Tense rank among the best motorway EVsWhere the BYD Sealion 7 and DS 3 E-Tense rank among the best city EVsWhere the BYD Sealion 7 and DS 3 E-Tense rank among the cheapest EVs to runWhere the BYD Sealion 7 and DS 3 E-Tense rank among EVs with the biggest boots
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 .