In this comparison, BMW iX3 leads on motorway range and running costs, while the XPENG G6 leads on charging speed.
Best value
Too close to call
Range & charging
Too close to call
Practicality
Too close to call
Choose the BMW iX3 if...
Choose the XPENG G6 if...
Our take
The BMW iX3 edges ahead overall, but it's close - check which categories matter most to you.
Too close to call
Too close to call
Too close to call
See the specification differences behind the verdict, with supporting figures for each advantage.
Compare the key specifications for your selected trims.
Size Comparison
Length
Width
Height
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BMW iX340 | XPENG G6Standard Range |
|---|---|---|
| Length | 4,782 mm | 4,758 mm |
| Width (mirrors folded) | 1,895 mm (better) | 1,920 mm |
| Width with mirrors out | 2,093 mm | Not available |
| Height | 1,635 mm | 1,650 mm |
| Turning circle | 12.1 m | 11.6 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 505 mm spare (better) | 480 mm spare |
Compare seating, child-seat mounting points, boot space and towing capacity.
Percentile ranks against UK EVs of the same body style.
BMW iX3
XPENG G6
| Specification | BMW iX3 40 | XPENG G6 Standard Range |
|---|---|---|
| Dimensions | ||
| Length | 4.78m | 4.76m-24mm |
| Width | 1.90m | 1.92m+25mm |
| Width (mirrors) | 2.09m | Not available |
| Height | 1.64m | 1.65m+15mm |
| Wheelbase | 2.90m | 2.89m-6mm |
| Capacity | ||
| Boot (seats up) | 520L | 571L (better) |
| Boot (seats down) | 1750L (better) | 1374L |
| Frunk | 58L | Not available |
| Seats | Not available | 5 |
| Practicality | ||
| Turning Circle | 12.1m | 11.6m (better) |
| Kerb Weight | 2,200kg | 2,065kg (better) |
| Electric | ||
| Battery | 82.6kWh (better) | 68.5kWh |
| Range (WLTP) | 395 mi (better) | 292 mi |
| Max DC Charge | 300kW | 382kW (better) |
| Pricing | ||
| UK MSRP | £53,250 | £39,990 (better) |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2026+ | 2026+ |
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | BMW iX340 | XPENG G6Standard Range |
|---|---|---|
| Official range (WLTP) | 395 miles (better) | 292 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 293 miles (better) | 193 miles |
| 10-80% rapid charge time | 21 min | 12 min (better) |
| Max rapid charge rate | 300 kW | 382 kW (better) |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | 146 Wh/km (better) | 175 Wh/km |
| Usable battery capacity | 82.6 kWh (better) | 68.5 kWh |
| Battery chemistry | Not available | LFP |
| Battery architecture | 800V | 800V |
Compare acceleration, power and drivetrain specifications for the selected trims.
See how UK motoring publications rate each car in their road tests.

BMW iX3
40

XPENG G6
Standard Range
Reviews and videos discuss each model overall; the specifications above apply to your selected trims.
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
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Work out monthly Benefit-in-Kind using current and future HMRC rates.
Cost per mile
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Tested 2026
Tested 2024
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Get a quote
BMW iX3
XPENG G6
The BMW iX3 costs £13,260 more than the XPENG G6. For that premium it adds 103 miles more WLTP range, a 0.9s quicker 0-62mph time and lower energy use, 146 versus 175 Wh/km. The XPENG G6 is not just cheaper - it also offers 82 kW faster peak rapid charging and 51 litres more boot space. On EVcarsguide's combined category scores, the BMW iX3 comes out ahead overall.
The XPENG G6 is £13,260 cheaper to buy. The BMW iX3 is cheaper to charge, roughly £160 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 XPENG G6 comes out roughly £13,100 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.
EVcarsguide estimates a real-world motorway range of about 293 miles for the BMW iX3 and 193 miles for the XPENG G6 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The BMW iX3 goes roughly 100 miles further between charging stops. A rapid charge to 80% takes around 21 minutes in the BMW iX3 and 12 in the XPENG G6, so the XPENG G6 loses less time at each stop. So the BMW iX3 stops less often while the XPENG G6 stops for less time - pick on which you would rather do.
The two are within 25 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 505 mm of total clearance for the BMW iX3 and about 480 mm of total clearance for the XPENG G6. The XPENG G6 also turns in a 0.5 m tighter circle, which helps with U-turns and multi-storey ramps.
Visit the full model pages for owner feedback, expert reviews, used prices and battery-health information.
Compare similarly sized and priced electric cars before finalising your shortlist.
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EVcarsguide scores every verified EV on price, range, family use and running costs. Here is where this pair appears.
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Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .