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BYD Sealion 7 vs Kia EV6 (2021-2024)
Selected trimComfortChange trim300 mi · 82.5 kWh · £44,990
At a glance
In this comparison, BYD Sealion 7 leads on family practicality, while the Kia EV6 leads on motorway range, charging speed and running costs.
Which should you choose?
Choose the BYD Sealion 7 if...
- you need the most family-friendly option with good safety and space
Choose the Kia EV6 (2021-2024) if...
- you do long motorway journeys - it has the best estimated real-world range at speed
- you need the fastest charging of these options
- you want the lowest running costs - from just 2p 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 Kia EV6 leads in the most categories, but each car here has its strengths.
Value
BYD
6
Kia
6.1
Too close to call
Motorway RangeKia
BYD
3.1
Kia
7.6
FamilyBYD
BYD
8
Kia
7.2
ChargingKia
BYD
5.9
Kia
8.3
Cost Per MileKia
BYD
0.8
Kia
6.3
City DrivingKia
BYD
2.2
Kia
3.6
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
Kia EV6
Air 77.4kWh
- £4,095 cheaper
- 28 miles more WLTP range
- 89 kW faster rapid charging
- 850 kg more towing capacity
Key specifications
Compare the key specifications for your selected trims.
| Measure | BYD Sealion 7Comfort | Kia EV6Air 77.4kWh |
|---|---|---|
| Price | £44,990 | £40,895 (better) |
| Official range | 300 miles | 328 miles (better) |
| Boot space | 520 L (better) | 490 L |
| 10-80% rapid charge | 24 min | 18 min (better) |
| 0-62 mph | 6.7 sec | Not available |
Size Comparison
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BYD Sealion 7
Kia EV6
Length
BYD Sealion 74,830mm
Kia EV64,680mm-150mm
Width
BYD Sealion 71,925mm
Kia EV61,880mm-45mm
Height
BYD Sealion 71,620mm
Kia EV61,550mm-70mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BYD Sealion 7Comfort | Kia EV6Air 77.4kWh |
|---|---|---|
| Length | 4,830 mm | 4,680 mm |
| Width (mirrors folded) | 1,925 mm | 1,880 mm (better) |
| Width with mirrors out | 2,189 mm | 2,141 mm (better) |
| Height | 1,620 mm | 1,550 mm |
| Turning circle | 11.7 m | 11.6 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 475 mm spare | 520 mm spare (better) |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | BYD Sealion 7Comfort | Kia EV6Air 77.4kWh |
|---|---|---|
| Seats | 5 | 5 |
| Boot space (seats up) | 520 L (better) | 490 L |
| Boot space (seats down) | 1789 L (better) | 1300 L |
| Frunk | 58 L (better) | 52 L |
| Towing capacity (braked) | 750 kg | 1,600 kg (better) |
How each stacks up
Percentile ranks against UK EVs of the same body style.
BYD Sealion 7
- One of 33 of 233 UK EVs in our catalogue with V2L (vehicle-to-load) support.
- At 4,830 mm, longer than 80% of SUVs we track.
Kia EV6
Not enough peers to make confident percentile claims.
Full specifications
| Specification |  BYD Sealion 7 Comfort |  Kia EV6 Air 77.4kWh |
|---|---|---|
| Dimensions | ||
| Length | 4.83m | 4.68m-150mm |
| Width | 1.93m | 1.88m-45mm |
| Width (mirrors) | 2.19m | 2.14m-48mm |
| Height | 1.62m | 1.55m-70mm |
| Wheelbase | 2.93m | 2.90m-30mm |
| Ground Clearance | 157mm | Not available |
| Capacity | ||
| Boot (seats up) | 520L (better) | 490L |
| Boot (seats down) | 1789L (better) | 1300L |
| Frunk | 58L (better) | 52L |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 11.7m | 11.6m (better) |
| Kerb Weight | 2,225kg | Not available |
| Towing Capacity | 750kg | 1,600kg (better) |
| Electric | ||
| Battery | 82.5kWh (better) | 77.4kWh |
| Range (WLTP) | 300 mi | 328 mi (better) |
| Max DC Charge | 150kW | 239kW (better) |
| Pricing | ||
| UK MSRP | £44,990 | £40,895 (better) |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2025+ | 2021–2024 |
* Kia EV6: Heat pump: optional on GT-Line and GT-Line S, standard on GT, not offered on the entry car at launch.
* Kia EV6: Headline WLTP figure for this drive type; versions on larger wheels are rated lower.
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | BYD Sealion 7Comfort | Kia EV6Air 77.4kWh |
|---|---|---|
| Official range (WLTP) | 300 miles | 328 miles (better) |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 204 miles | 273 miles (better) |
| 10-80% rapid charge time | 24 min | 18 min (better) |
| Max rapid charge rate | 150 kW | 239 kW (better) |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | 199 Wh/km | Not available |
| Usable battery capacity | 82.5 kWh (better) | 77.4 kWh |
| Battery chemistry | LFP | NCMA |
| Battery architecture | Not available | 800V |
| Heat pump | Standard (better) | Not standard |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | BYD Sealion 7Comfort | Kia EV6Air 77.4kWh |
|---|---|---|
| 0-62 mph | 6.7 sec | Not available |
| Power | 230 kW (better) | 168 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. 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
Kia EV6
Air 77.4kWh
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
New and used prices
Current pricing and recent used-market behaviour.
| Measure | BYD Sealion 7Comfort | Kia EV6Air 77.4kWh |
|---|---|---|
| Used market price from | £30,211 | £16,040 |
| Average used price | £30,993 | £19,440 |
| Recent used-price trend | Down 10.1% over ~6 months | Down 18.8% 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 - Kia EV6 Air 77.4kWh
Tested 2022
Adult Occupant90%
Child Occupant86%
Vulnerable Road Users64%
Safety Assist87%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | BYD Sealion 7Comfort | Kia EV6Air 77.4kWh |
|---|---|---|
| Battery warranty | 8 years (better) | 7 years |
| Battery warranty distance | 250,000 km (better) | 160,934 km |
Buying options
Get a quote
BYD Sealion 7
Used on AutoTraderLease deals
Kia EV6
Used on AutoTraderLease deals
Live used listings
Active inventory from independent UK dealers.
BYD Sealion 7
No active listings.
Kia EV6
- £23,2642023Car360View
- £28,4002023EV ExpertsView
- £28,9002023EV ExpertsView
Frequently asked questions
Is the BYD Sealion 7 worth the extra £4,095 over the Kia EV6?
The BYD Sealion 7 costs £4,095 more than the Kia EV6. For that premium it adds 62 kW more power. The Kia EV6 is not just cheaper - it also offers 28 miles more WLTP range and 89 kW faster peak rapid charging. On EVcarsguide's combined category scores, the Kia EV6 comes out ahead overall.
Which is cheaper to own over 5 years, the BYD Sealion 7 or the Kia EV6?
The Kia EV6 is £4,095 cheaper to buy. The Kia EV6 is cheaper to charge, roughly £160 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 Kia EV6 comes out roughly £4,375 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 Kia EV6 like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 204 miles for the BYD Sealion 7 and 273 miles for the Kia EV6 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Kia EV6 goes roughly 70 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 18-24 minutes.
Which is easier to park and drive in town, the BYD Sealion 7 or the Kia EV6?
The Kia EV6 is the easier car for tight UK car parks: it is 45 mm narrower than the BYD Sealion 7. In a standard 2,400 mm bay that leaves about 520 mm of total clearance for the Kia EV6 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 Kia EV6?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 90% battery health for the BYD Sealion 7 and 89% for the Kia EV6. That is close enough that capacity loss should not decide between them. The BYD Sealion 7's LFP-type pack tolerates daily 100% charging, while the Kia EV6's NMC-type pack lasts longest kept to about 80% for everyday use. The BYD Sealion 7 has the longer battery warranty at 8 years, versus 7 for the Kia EV6.
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 Kia EV6 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 Kia EV6 rank among the best family EVsWhere the BYD Sealion 7 and Kia EV6 rank among the best electric SUVsWhere the BYD Sealion 7 and Kia EV6 rank among long-range EVsWhere the BYD Sealion 7 and Kia EV6 rank among the best motorway EVsWhere the BYD Sealion 7 and Kia EV6 rank among the best city EVsWhere the BYD Sealion 7 and Kia EV6 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 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.
Guide
Buying a Used Kia EV6 (2021-2024): Which Version, the ICCU Recall, Range & What to Check
A used Kia EV6 buyer’s guide: Air vs GT-Line vs GT-Line S vs GT, RWD or AWD, the ICCU recall and 12V battery, heat pump or not, Kia’s 7-year warranty, real-world range, what to pay and a printable checklist.
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .