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BYD Dolphin vs XPENG G6
Selected trimComfortChange trim265 mi · 60.4 kWh · £30,195
Selected trimStandard RangeChange trim292 mi · 68.5 kWh · £39,990
At a glance
In this comparison, BYD Dolphin leads on running costs and city driving, while the XPENG G6 leads on charging speed.
Which should you choose?
Choose the BYD Dolphin if...
- you want the lowest running costs - from just 1.9p per mile on off-peak electricity
- you drive in the city - it's compact with an excellent turning circle
Choose the XPENG G6 if...
- you need the fastest charging of these options
How we reached the recommendation
Verdict
Our take
The BYD Dolphin edges ahead overall, but it's close - check which categories matter most to you.
Value
BYD
6.7
XPENG
6.6
Too close to call
Motorway Range
BYD
5.5
XPENG
5.3
Too close to call
Family
BYD
7.9
XPENG
8.3
Too close to call
ChargingXPENG
BYD
7.7
XPENG
8.9
Cost Per MileBYD
BYD
7.2
XPENG
2.4
City DrivingBYD
BYD
8.5
XPENG
3
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
XPENG G6
Standard Range
- 27 miles more WLTP range
- 207 litres more boot space
- 272 kW faster rapid charging
- 68 kW more power
Key specifications
Compare the key specifications for your selected trims.
| Measure | BYD DolphinComfort | XPENG G6Standard Range |
|---|---|---|
| Price | £30,195 (better) | £39,990 |
| Official range | 265 miles | 292 miles (better) |
| Boot space | 364 L | 571 L (better) |
| 10-80% rapid charge | Not available | 12 min |
| 0-62 mph | 7 sec | 6.9 sec (better) |
Size Comparison
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BYD Dolphin
XPENG G6
Length
BYD Dolphin4,290mm-468mm
XPENG G64,758mm
Width
BYD Dolphin1,770mm-150mm
XPENG G61,920mm
Height
BYD Dolphin1,570mm-80mm
XPENG G61,650mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BYD DolphinComfort | XPENG G6Standard Range |
|---|---|---|
| Length | 4,290 mm | 4,758 mm |
| Width (mirrors folded) | 1,770 mm (better) | 1,920 mm |
| Width with mirrors out | 2,012 mm | Not available |
| Height | 1,570 mm | 1,650 mm |
| Turning circle | 9.4 m (better) | 11.6 m |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 630 mm spare (better) | 480 mm spare |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | BYD DolphinComfort | XPENG G6Standard Range |
|---|---|---|
| Seats | 5 | 5 |
| ISOFIX child-seat points | 3 | Not available |
| Boot space (seats up) | 364 L | 571 L (better) |
| Boot space (seats down) | 1329 L | 1374 L (better) |
| Towing capacity (braked) | 750 kg | Not available |
How each stacks up
Percentile ranks against UK EVs of the same body style.
BYD Dolphin
- 265 mile WLTP range, longer than 90% of hatchback EVs we track.
- Peak DC charging of 110 kW, faster than 85% of hatchback EVs in our catalogue.
- One of 33 of 232 UK EVs in our catalogue with V2L (vehicle-to-load) support.
XPENG G6
- Peak DC charging of 382 kW, faster than 95% of SUVs in our catalogue.
- Boot space of 571 L is bigger than 85% of SUVs we track.
Full specifications
| Specification |  BYD Dolphin Comfort |  XPENG G6 Standard Range |
|---|---|---|
| Dimensions | ||
| Length | 4.29m | 4.76m+468mm |
| Width | 1.77m | 1.92m+150mm |
| Width (mirrors) | 2.01m | Not available |
| Height | 1.57m | 1.65m+80mm |
| Wheelbase | 2.70m | 2.89m+190mm |
| Capacity | ||
| Boot (seats up) | 364L | 571L (better) |
| Boot (seats down) | 1329L | 1374L (better) |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 9.4m (better) | 11.6m |
| Kerb Weight | 1,658kg (better) | 2,065kg |
| Towing Capacity | 750kg | Not available |
| Electric | ||
| Battery | 60.4kWh | 68.5kWh (better) |
| Range (WLTP) | 265 mi | 292 mi (better) |
| Max DC Charge | 110kW | 382kW (better) |
| Pricing | ||
| UK MSRP | £30,195 (better) | £39,990 |
| Details | ||
| Body Style | Hatchback | SUV |
| Available | 2023+ | 2026+ |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | BYD DolphinComfort | XPENG G6Standard Range |
|---|---|---|
| Official range (WLTP) | 265 miles | 292 miles (better) |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 221 miles (better) | 193 miles |
| 10-80% rapid charge time | Not available | 12 min |
| Max rapid charge rate | 110 kW | 382 kW (better) |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | Not available | 175 Wh/km |
| Usable battery capacity | 60.4 kWh | 68.5 kWh (better) |
| Battery chemistry | LFP | LFP |
| Battery architecture | 400V | 800V (better) |
| Heat pump | Standard | Not available |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | BYD DolphinComfort | XPENG G6Standard Range |
|---|---|---|
| 0-62 mph | 7 sec | 6.9 sec (better) |
| Power | 150 kW | 218 kW (better) |
| Torque | 310 Nm | 440 Nm (better) |
| Drivetrain | FWD | RWD |
What the critics say
See how UK motoring publications rate each car in their road tests.
BYD Dolphin
Comfort
7.2/10
average across 6 reviews
- DrivingElectric4/5
- Auto Express4/5
- Electrifying.com8/10
XPENG G6
Standard Range
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 Dolphin Comfort
Tested 2023
Adult Occupant89%
Child Occupant87%
Vulnerable Road Users85%
Safety Assist79%
Full result on euroncap.com (opens in new tab)
Euro NCAP - XPENG G6 Standard Range
Tested 2024
Adult Occupant88%
Child Occupant85%
Vulnerable Road Users81%
Safety Assist75%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | BYD DolphinComfort | XPENG G6Standard Range |
|---|---|---|
| Battery warranty | 8 years | 8 years |
| Battery warranty distance | 250,000 km (better) | 160,934 km |
Buying options
Get a quote
BYD Dolphin
Used on AutoTraderLease deals
XPENG G6
Used on AutoTraderLease deals
Frequently asked questions
Is the XPENG G6 worth the extra £9,795 over the BYD Dolphin?
The XPENG G6 costs £9,795 more than the BYD Dolphin. For that premium it adds 27 miles more WLTP range, 272 kW faster peak rapid charging and 207 litres more boot space. On EVcarsguide's combined category scores, the BYD Dolphin comes out ahead overall.
Which is cheaper to own over 5 years, the BYD Dolphin or the XPENG G6?
The BYD Dolphin is £9,795 cheaper to buy. The BYD Dolphin is cheaper to charge, roughly £152 a year versus £192 for the XPENG G6, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the BYD Dolphin comes out roughly £9,995 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 Dolphin and XPENG G6 like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 221 miles for the BYD Dolphin and 193 miles for the XPENG G6 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The BYD Dolphin goes roughly 28 miles further between charging stops.
Which is easier to park and drive in town, the BYD Dolphin or the XPENG G6?
The BYD Dolphin is the easier car for tight UK car parks: it is 150 mm narrower than the XPENG G6. In a standard 2,400 mm bay that leaves about 630 mm of total clearance for the BYD Dolphin and about 480 mm of total clearance for the XPENG G6. The BYD Dolphin also turns in a 2.2 m tighter circle, which helps with U-turns and multi-storey ramps.
Which battery will hold up better as a used buy, the BYD Dolphin or the XPENG G6?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 90% battery health for the BYD Dolphin and 90% for the XPENG G6. That is close enough that capacity loss should not decide between them. Both use LFP-type cells, which are happy charged to 100% every day. 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 Dolphin comparisons
More XPENG G6 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 Dolphin and XPENG G6 rank among the best family EVsWhere the BYD Dolphin and XPENG G6 rank among EVs under £40,000Where the BYD Dolphin and XPENG G6 rank among the best motorway EVsWhere the BYD Dolphin and XPENG G6 rank among the best city EVsWhere the BYD Dolphin and XPENG G6 rank among the cheapest EVs to runWhere the BYD Dolphin and XPENG G6 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 Dolphin (2023 on): 44.9 vs 60.4 kWh & What to Pay
A used BYD Dolphin buyer’s guide: the 60.4 kWh Comfort and Design, the later 44.9 kWh Active and Boost, BYD’s 8-year battery warranty, slow rapid charging, real-world range, what owners report and a printable checklist.
GuideBuying a Used XPENG G6 (2025 on): Original vs Updated, Warranty & What to Pay
A used XPENG G6 buyer’s guide: the original 66 kWh and 87.5 kWh cars vs the updated 2026 G6, battery warranty, a young brand and dealer network, real-world range, what owners report, what to pay and a printable checklist.
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .