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BYD Sealion 7 vs Lexus UX 300e
Selected trimComfortChange trim300 mi · 82.5 kWh · £44,990
Selected trimStandard · 2023-26280 mi · 72.8 kWh · £47,495
At a glance
In this comparison, BYD Sealion 7 leads on value for money, family practicality and charging speed, while the Lexus UX 300e leads on 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 Lexus UX 300e if...
- you want the lowest running costs - from just 2.2p per mile on off-peak electricity
- you drive in the city - it's compact with an excellent turning circle
How we reached the recommendation
Verdict
Our take
The BYD Sealion 7 leads in the most categories, but each car here has its strengths.
ValueBYD
BYD
6
Lexus
4.5
Motorway Range
BYD
3.1
Lexus
2.7
Too close to call
FamilyBYD
BYD
8
Lexus
5.9
ChargingBYD
BYD
5.9
Lexus
0.1
Cost Per MileLexus
BYD
0.8
Lexus
3.8
City DrivingLexus
BYD
2.2
Lexus
6.3
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
BYD Sealion 7
Comfort
- £2,505 cheaper
- 153 litres more boot space
- 100 kW faster rapid charging
- 56 min quicker 10-80% rapid charge
- 80 kW more power
- 750 kg more towing capacity
Key specifications
Compare the key specifications for your selected trims.
| Measure | BYD Sealion 7Comfort | Lexus UX 300eBase |
|---|---|---|
| Price | £44,990 (better) | £47,495 |
| Official range | 300 miles (better) | 280 miles |
| Boot space | 520 L (better) | 367 L |
| 10-80% rapid charge | 24 min (better) | 80 min |
| 0-62 mph | 6.7 sec (better) | 7.5 sec |
Size Comparison
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BYD Sealion 7
Lexus UX 300e
Length
BYD Sealion 74,830mm
Lexus UX 300e4,495mm-335mm
Width
BYD Sealion 71,925mm
Lexus UX 300e1,840mm-85mm
Height
BYD Sealion 71,620mm
Lexus UX 300e1,545mm-75mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BYD Sealion 7Comfort | Lexus UX 300eBase |
|---|---|---|
| Length | 4,830 mm | 4,495 mm |
| Width (mirrors folded) | 1,925 mm | 1,840 mm (better) |
| Width with mirrors out | 2,189 mm | 2,080 mm (better) |
| Height | 1,620 mm | 1,545 mm |
| Turning circle | 11.7 m | 10.4 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 475 mm spare | 560 mm spare (better) |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | BYD Sealion 7Comfort | Lexus UX 300eBase |
|---|---|---|
| Seats | 5 | 5 |
| ISOFIX child-seat points | Not available | 2 |
| Boot space (seats up) | 520 L (better) | 367 L |
| Boot space (seats down) | 1789 L | Not available |
| 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.
Lexus UX 300e
Not enough peers to make confident percentile claims.
Full specifications
| Specification |  BYD Sealion 7 Comfort |  Lexus UX 300e Base |
|---|---|---|
| Dimensions | ||
| Length | 4.83m | 4.50m-335mm |
| Width | 1.93m | 1.84m-85mm |
| Width (mirrors) | 2.19m | 2.08m-109mm |
| Height | 1.62m | 1.54m-75mm |
| Wheelbase | 2.93m | 2.64m-290mm |
| Ground Clearance | 157mm | 166mm+9mm |
| Capacity | ||
| Boot (seats up) | 520L (better) | 367L |
| Boot (seats down) | 1789L | Not available |
| Frunk | 58L | Not available |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 11.7m | 10.4m (better) |
| Kerb Weight | 2,225kg | 1,840kg (better) |
| Towing Capacity | 750kg (better) | Not available |
| Electric | ||
| Battery | 82.5kWh (better) | 72.8kWh |
| Range (WLTP) | 300 mi (better) | 280 mi |
| Max DC Charge | 150kW (better) | 50kW |
| Pricing | ||
| UK MSRP | £44,990 (better) | £47,495 |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2025+ | 2023–2026 |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | BYD Sealion 7Comfort | Lexus UX 300eBase |
|---|---|---|
| Official range (WLTP) | 300 miles (better) | 280 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 204 miles | 233 miles (better) |
| 10-80% rapid charge time | 24 min (better) | 80 min |
| Max rapid charge rate | 150 kW (better) | 50 kW |
| Home AC charging | 11 kW (better) | 6.6 kW |
| Energy consumption | 199 Wh/km | Not available |
| Usable battery capacity | 82.5 kWh (better) | 71.4 kWh |
| Battery chemistry | LFP | NMC |
| Battery architecture | Not available | 400V |
| Heat pump | Standard | Standard |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | BYD Sealion 7Comfort | Lexus UX 300eBase |
|---|---|---|
| 0-62 mph | 6.7 sec (better) | 7.5 sec |
| Power | 230 kW (better) | 150 kW |
| Torque | 380 Nm (better) | 300 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
Lexus UX 300e
Base
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
New and used prices
Current pricing and recent used-market behaviour.
| Measure | BYD Sealion 7Comfort | Lexus UX 300eBase |
|---|---|---|
| Used market price from | £30,211 | £18,748 |
| Average used price | £30,993 | £21,478 |
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 - Lexus UX 300e Base
Tested 2019
Adult Occupant96%
Child Occupant85%
Vulnerable Road Users82%
Safety Assist77%
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | BYD Sealion 7Comfort | Lexus UX 300eBase |
|---|---|---|
| Battery warranty | 8 years | 8 years |
| Battery warranty distance | 250,000 km (better) | 160,000 km |
Buying options
Get a quote
BYD Sealion 7
Used on AutoTraderLease deals
Lexus UX 300e
Used on AutoTraderLease deals
Frequently asked questions
Is the Lexus UX 300e worth the extra £2,505 over the BYD Sealion 7?
The Lexus UX 300e costs £2,505 more than the BYD Sealion 7. On the headline specs that premium buys little measurable advantage - the two are closely matched on range, charging and space. The BYD Sealion 7 is not just cheaper - it also offers 100 kW faster peak rapid charging, 153 litres more boot space and 80 kW more power. On EVcarsguide's combined category scores, the BYD Sealion 7 comes out ahead overall.
Which is cheaper to own over 5 years, the BYD Sealion 7 or the Lexus UX 300e?
The BYD Sealion 7 is £2,505 cheaper to buy. The Lexus UX 300e is cheaper to charge, roughly £176 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 £2,305 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 Lexus UX 300e like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 204 miles for the BYD Sealion 7 and 233 miles for the Lexus UX 300e - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Lexus UX 300e goes roughly 29 miles further between charging stops. A rapid charge to 80% takes around 24 minutes in the BYD Sealion 7 and 80 in the Lexus UX 300e, so the BYD Sealion 7 loses less time at each stop. So the Lexus UX 300e 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 Lexus UX 300e?
The Lexus UX 300e is the easier car for tight UK car parks: it is 85 mm narrower than the BYD Sealion 7. In a standard 2,400 mm bay that leaves about 560 mm of total clearance for the Lexus UX 300e and about 475 mm of total clearance for the BYD Sealion 7. The Lexus UX 300e also turns in a 1.3 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 Lexus UX 300e?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 90% battery health for the BYD Sealion 7 and 84% for the Lexus UX 300e. 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 Lexus UX 300e'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 Lexus UX 300e 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 Lexus UX 300e rank among the best family EVsWhere the BYD Sealion 7 and Lexus UX 300e rank among the best electric SUVsWhere the BYD Sealion 7 and Lexus UX 300e rank among the best motorway EVsWhere the BYD Sealion 7 and Lexus UX 300e rank among the best city EVsWhere the BYD Sealion 7 and Lexus UX 300e rank among the cheapest EVs to runWhere the BYD Sealion 7 and Lexus UX 300e rank among EVs with the biggest boots
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 Lexus UX 300e (2020-2026): 54 vs 73 kWh, Recalls, Real Range & What to Pay
A used Lexus UX 300e buyer’s guide: the 54.3 kWh car vs the 2023 72.8 kWh update, CHAdeMO charging, the heater recall, the extended battery cover, 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 .