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BYD Sealion 7 vs MG S6 EV
Selected trimComfortChange trim300 mi · 82.5 kWh · £44,990
Selected trimSE Long RangeChange trim329 mi · 77 kWh · £37,995
At a glance
In this comparison, BYD Sealion 7 leads on charging speed, while the MG S6 EV leads on value for money, family practicality and running costs.
Which should you choose?
Choose the BYD Sealion 7 if...
- you need the fastest charging of these options
Choose the MG S6 EV if...
- you want the most for your money - best overall spec per pound
- you have a family - it has the best combination of boot space, safety, and rear legroom
- you want the lowest running costs - from just 2.3p 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 MG S6 EV leads in the most categories, but each car here has its strengths.
ValueMG
BYD
6
MG
7
Motorway Range
BYD
3.1
MG
3.3
Too close to call
FamilyMG
BYD
8
MG
8.5
ChargingBYD
BYD
5.9
MG
3.3
Cost Per MileMG
BYD
0.8
MG
3.4
City DrivingMG
BYD
2.2
MG
3.9
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
MG S6 EV
SE Long Range
- £6,995 cheaper
- 29 miles more WLTP range
- 154 litres more boot space
- 33 Wh/km more efficient
- 0.6 m tighter turning circle
- 750 kg more towing capacity
Key specifications
Compare the key specifications for your selected trims.
| Measure | BYD Sealion 7Comfort | MG S6 EVSE Long Range |
|---|---|---|
| Price | £44,990 | £37,995 (better) |
| Official range | 300 miles | 329 miles (better) |
| Boot space | 520 L | 674 L (better) |
| 10-80% rapid charge | 24 min (better) | 38 min |
| 0-62 mph | 6.7 sec (better) | 9.2 sec |
Size Comparison
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BYD Sealion 7
MG S6 EV
Length
BYD Sealion 74,830mm
MG S6 EV4,708mm-122mm
Width
BYD Sealion 71,925mm
MG S6 EV1,912mm-13mm
Height
BYD Sealion 71,620mm-44mm
MG S6 EV1,664mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BYD Sealion 7Comfort | MG S6 EVSE Long Range |
|---|---|---|
| Length | 4,830 mm | 4,708 mm |
| Width (mirrors folded) | 1,925 mm | 1,912 mm (better) |
| Width with mirrors out | 2,189 mm | 2,142 mm (better) |
| Height | 1,620 mm | 1,664 mm |
| Turning circle | 11.7 m | 11.1 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 475 mm spare | 488 mm spare (better) |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | BYD Sealion 7Comfort | MG S6 EVSE Long Range |
|---|---|---|
| Seats | 5 | Not available |
| ISOFIX child-seat points | Not available | 2 |
| Boot space (seats up) | 520 L | 674 L (better) |
| Boot space (seats down) | 1789 L | 1910 L (better) |
| Frunk | 58 L | 124 L (better) |
| Towing capacity (braked) | 750 kg | 1,500 kg (better) |
How each stacks up
Percentile ranks against UK EVs of the same body style.
BYD Sealion 7
- One of 32 of 232 UK EVs in our catalogue with V2L (vehicle-to-load) support.
- At 4,830 mm, longer than 80% of SUVs we track.
MG S6 EV
- A 124 L frunk, one of 5 of 232 UK EVs in our catalogue with a front boot of 124 L or more.
- Boot space of 674 L is bigger than 95% of SUVs we track.
- One of 32 of 232 UK EVs in our catalogue with V2L (vehicle-to-load) support.
Full specifications
| Specification |  BYD Sealion 7 Comfort |  MG S6 EV SE Long Range |
|---|---|---|
| Dimensions | ||
| Length | 4.83m | 4.71m-122mm |
| Width | 1.93m | 1.91m-13mm |
| Width (mirrors) | 2.19m | 2.14m-47mm |
| Height | 1.62m | 1.66m+44mm |
| Wheelbase | 2.93m | 2.83m-95mm |
| Ground Clearance | 157mm | Not available |
| Capacity | ||
| Boot (seats up) | 520L | 674L (better) |
| Boot (seats down) | 1789L | 1910L (better) |
| Frunk | 58L | 124L (better) |
| Seats | 5 | Not available |
| Practicality | ||
| Turning Circle | 11.7m | 11.1m (better) |
| Kerb Weight | 2,225kg | 1,880kg (better) |
| Towing Capacity | 750kg | 1,500kg (better) |
| Electric | ||
| Battery | 82.5kWh (better) | 77kWh |
| Range (WLTP) | 300 mi | 329 mi (better) |
| Max DC Charge | 150kW | 150kW |
| Pricing | ||
| UK MSRP | £44,990 | £37,995 (better) |
| 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 | MG S6 EVSE Long Range |
|---|---|---|
| Official range (WLTP) | 300 miles | 329 miles (better) |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 204 miles | 232 miles (better) |
| 10-80% rapid charge time | 24 min (better) | 38 min |
| Max rapid charge rate | 150 kW | 150 kW |
| Home AC charging | 11 kW (better) | 7 kW |
| Energy consumption | 199 Wh/km | 166 Wh/km (better) |
| Usable battery capacity | 82.5 kWh (better) | 74.3 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 | MG S6 EVSE Long Range |
|---|---|---|
| 0-62 mph | 6.7 sec (better) | 9.2 sec |
| Power | 230 kW (better) | 180 kW |
| Torque | 380 Nm (better) | 350 Nm |
| Drivetrain | RWD | RWD |
What the critics say
See how UK motoring publications rate each car in their road tests.
BYD Sealion 7
Comfort
6.6/10
average across 6 reviews
- Parkers3.9/5
- Auto Express3.5/5
- Electrifying.com7/10
MG S6 EV
SE Long Range
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
New and used prices
Current pricing and recent used-market behaviour.
| Measure | BYD Sealion 7Comfort | MG S6 EVSE Long Range |
|---|---|---|
| Used market price from | £30,211 | £24,990 |
| Average used price | £30,993 | £25,890 |
| Saving vs RRP | £13,997 below new | £12,105 below new |
| Recent used-price trend | Down 10.1% over ~6 months | Up 4.3% 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 - 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 - MG S6 EV SE Long Range
Tested 2025
Adult Occupant92%
Child Occupant85%
Vulnerable Road Users84%
Safety Assist78%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | BYD Sealion 7Comfort | MG S6 EVSE Long Range |
|---|---|---|
| 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
MG S6 EV
Used on AutoTraderLease deals
Live used listings
Active inventory from independent UK dealers.
BYD Sealion 7
No active listings.
MG S6 EV
- £26,7902025Cars2View
- £24,9902026Cars2View
Frequently asked questions
Is the BYD Sealion 7 worth the extra £6,995 over the MG S6 EV?
The BYD Sealion 7 costs £6,995 more than the MG S6 EV. For that premium it adds 50 kW more power and a 2.5s quicker 0-62mph time. The MG S6 EV is not just cheaper - it also offers 29 miles more WLTP range, 154 litres more boot space and lower energy use, 166 versus 199 Wh/km. On EVcarsguide's combined category scores, the MG S6 EV comes out ahead overall.
Which is cheaper to own over 5 years, the BYD Sealion 7 or the MG S6 EV?
The MG S6 EV is £6,995 cheaper to buy. The MG S6 EV is cheaper to charge, roughly £184 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 MG S6 EV comes out roughly £7,155 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 MG S6 EV like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 204 miles for the BYD Sealion 7 and 232 miles for the MG S6 EV - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The MG S6 EV goes roughly 28 miles further between charging stops. A rapid charge to 80% takes around 24 minutes in the BYD Sealion 7 and 38 in the MG S6 EV, so the BYD Sealion 7 loses less time at each stop. So the MG S6 EV stops less often while the BYD Sealion 7 stops for less time - pick on which you would rather do.
Which is easier to park and drive in town, the BYD Sealion 7 or the MG S6 EV?
The two are within 13 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 488 mm of total clearance for the MG S6 EV and about 475 mm of total clearance for the BYD Sealion 7. The MG S6 EV also turns in a 0.6 m tighter circle, which helps with U-turns and multi-storey ramps.
Which battery will hold up better as a used buy, the BYD Sealion 7 or the MG S6 EV?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 90% battery health for the BYD Sealion 7 and 84% for the MG S6 EV. 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 MG S6 EV'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 BYD Sealion 7 comparisons
More MG S6 EV 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 MG S6 EV rank among the best electric SUVsWhere the BYD Sealion 7 and MG S6 EV rank among long-range EVsWhere the BYD Sealion 7 and MG S6 EV rank among the best motorway EVsWhere the BYD Sealion 7 and MG S6 EV rank among the best city EVsWhere the BYD Sealion 7 and MG S6 EV rank among the cheapest EVs to runWhere the BYD Sealion 7 and MG S6 EV rank among EVs with the biggest boots
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 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.
GuideBuying a Used MG S6 EV (2025 on): SE, Trophy or Dual Motor & What to Pay
A used MG S6 EV buyer’s guide: SE, Trophy and Trophy Dual Motor, the steep depreciation, MG’s 7-year warranty and how to keep it, 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 .