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BMW iX (2021-2025) vs Mercedes-Benz G-Class Electric
Selected trimxDrive40 · 2021-25Change trim257 mi · 76.6 kWh · £69,905
Selected trimG 580 with EQ Technology283 mi · 116 kWh · £154,870
At a glance
In this comparison, BMW iX leads on motorway range, while the Mercedes-Benz G-Class Electric leads on value for money, family practicality and charging speed.
Best value
Mercedes-Benz G-Class ElectricRange & charging
Too close to call
Practicality
Mercedes-Benz G-Class ElectricWhich should you choose?
Choose the BMW iX (2021-2025) if...
- you do long motorway journeys - it has the best estimated real-world range at speed
Choose the Mercedes-Benz G-Class Electric 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 need the fastest charging of these options
How we reached the recommendation
Verdict
Our take
The Mercedes-Benz G-Class Electric wins almost every category - it's the clear choice unless price is the deciding factor.
ValueMercedes-Benz
BMW
4.1
Mercedes-Benz
4.7
Motorway RangeBMW
BMW
3
Mercedes-Benz
2.4
FamilyMercedes-Benz
BMW
7.8
Mercedes-Benz
9
ChargingMercedes-Benz
BMW
3.7
Mercedes-Benz
7.2
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
Mercedes-Benz G-Class Electric
G 580 with EQ Technology
- 25 miles more WLTP range
- 120 litres more boot space
- 50 kW faster rapid charging
Key specifications
Compare the key specifications for your selected trims.
| Measure | BMW iXxDrive40 | Mercedes-Benz G-Class ElectricG 580 with EQ Technology |
|---|---|---|
| Price | £69,905 (better) | £154,870 |
| Official range | 257 miles | 283 miles (better) |
| Boot space | 500 L | 620 L (better) |
| 10-80% rapid charge | 35 min | Not available |
| 0-62 mph | 4.6 sec (better) | 4.7 sec |
Size Comparison
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BMW iX
Mercedes-Benz G-Class Electric
Length
BMW iX4,965mm
Mercedes-Benz G-Class Electric4,863mm-102mm
Width
BMW iX1,970mm
Mercedes-Benz G-Class Electric1,931mm-39mm
Height
BMW iX1,695mm-274mm
Mercedes-Benz G-Class Electric1,969mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BMW iXxDrive40 | Mercedes-Benz G-Class ElectricG 580 with EQ Technology |
|---|---|---|
| Length | 4,965 mm | 4,863 mm |
| Width (mirrors folded) | 1,970 mm | 1,931 mm (better) |
| Width with mirrors out | Not available | 2,187 mm |
| Height | 1,695 mm | 1,969 mm |
| Turning circle | 12.8 m (better) | 13.6 m |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 430 mm spare | 469 mm spare (better) |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | BMW iXxDrive40 | Mercedes-Benz G-Class ElectricG 580 with EQ Technology |
|---|---|---|
| Seats | 5 | 5 |
| Boot space (seats up) | 500 L | 620 L (better) |
| Boot space (seats down) | 1750 L | 1990 L (better) |
| Towing capacity (braked) | 2,500 kg | Not available |
How each stacks up
Percentile ranks against UK EVs of the same body style.
BMW iX
- At 4,965 mm, longer than 90% of SUVs we track.
- Braked towing capacity of 2,500 kg, a stronger tow rating than 90% of SUVs we track.
- 3,000 mm wheelbase, longer than 90% of SUVs we track.
Mercedes-Benz G-Class Electric
- Boot space of 620 L is bigger than 90% of SUVs we track.
- At 4,863 mm, longer than 85% of SUVs we track.
Full specifications
| Specification |  BMW iX xDrive40 |  Mercedes-Benz G-Class Electric G 580 with EQ Technology |
|---|---|---|
| Dimensions | ||
| Length | 4.96m | 4.86m-102mm |
| Width | 1.97m | 1.93m-39mm |
| Width (mirrors) | Not available | 2.19m |
| Height | 1.70m | 1.97m+274mm |
| Wheelbase | 3.00m | 2.89m-110mm |
| Ground Clearance | Not available | 250mm |
| Capacity | ||
| Boot (seats up) | 500L | 620L (better) |
| Boot (seats down) | 1750L | 1990L (better) |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 12.8m (better) | 13.6m |
| Kerb Weight | Not available | 3,209kg |
| Towing Capacity | 2,500kg | Not available |
| Electric | ||
| Battery | 76.6kWh | 116kWh (better) |
| Range (WLTP) | 257 mi | 283 mi (better) |
| Max DC Charge | 150kW | 200kW (better) |
| Pricing | ||
| UK MSRP | £69,905 (better) | £154,870 |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2021–2025 | 2024+ |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | BMW iXxDrive40 | Mercedes-Benz G-Class ElectricG 580 with EQ Technology |
|---|---|---|
| Official range (WLTP) | 257 miles | 283 miles (better) |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 214 miles | 235 miles (better) |
| 10-80% rapid charge time | 35 min | Not available |
| Max rapid charge rate | 150 kW | 200 kW (better) |
| Home AC charging | 11 kW | 11 kW |
| Usable battery capacity | 71 kWh | 116 kWh (better) |
| Battery chemistry | NMC | NMC |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | BMW iXxDrive40 | Mercedes-Benz G-Class ElectricG 580 with EQ Technology |
|---|---|---|
| 0-62 mph | 4.6 sec (better) | 4.7 sec |
| Power | 240 kW | Not available |
| Torque | 765 Nm | Not available |
| Drivetrain | AWD | AWD |
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 - BMW iX xDrive40
Tested 2025
Adult Occupant91%
Child Occupant87%
Vulnerable Road Users73%
Safety Assist81%
Full result on euroncap.com (opens in new tab)
Euro NCAP - Mercedes-Benz G-Class Electric G 580 with EQ Technology
Tested 2025
Adult Occupant90%
Child Occupant83%
Vulnerable Road Users78%
Safety Assist72%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | BMW iXxDrive40 | Mercedes-Benz G-Class ElectricG 580 with EQ Technology |
|---|---|---|
| Battery warranty | 8 years | Not available |
| Battery warranty distance | 160,934 km | Not available |
Buying options
Get a quote
BMW iX
Used on AutoTraderLease deals
Mercedes-Benz G-Class Electric
Used on AutoTraderLease deals
Live used listings
Active inventory from independent UK dealers.
BMW iX
- £31,6302021Car360View
- £26,3502022Anchor CarsView
Mercedes-Benz G-Class Electric
No active listings.
Frequently asked questions
Is the Mercedes-Benz G-Class Electric worth the extra £84,965 over the BMW iX?
The Mercedes-Benz G-Class Electric costs £84,965 more than the BMW iX. For that premium it adds 25 miles more WLTP range, 50 kW faster peak rapid charging and 120 litres more boot space. On EVcarsguide's combined category scores, the Mercedes-Benz G-Class Electric comes out ahead overall.
Which is cheaper to own over 5 years, the BMW iX or the Mercedes-Benz G-Class Electric?
The BMW iX is £84,965 cheaper to buy. The BMW iX is cheaper to charge, roughly £200 a year versus £280 for the Mercedes-Benz G-Class Electric, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the BMW iX comes out roughly £85,365 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.
What are the BMW iX and Mercedes-Benz G-Class Electric like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 214 miles for the BMW iX and 235 miles for the Mercedes-Benz G-Class Electric - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Mercedes-Benz G-Class Electric goes roughly 21 miles further between charging stops.
Which is easier to park and drive in town, the BMW iX or the Mercedes-Benz G-Class Electric?
The Mercedes-Benz G-Class Electric is the easier car for tight UK car parks: it is 39 mm narrower than the BMW iX. In a standard 2,400 mm bay that leaves about 469 mm of total clearance for the Mercedes-Benz G-Class Electric and about 430 mm of total clearance for the BMW iX. The BMW iX also turns in a 0.8 m tighter circle, which helps with U-turns and multi-storey ramps.
Which battery will hold up better as a used buy, the BMW iX or the Mercedes-Benz G-Class Electric?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the BMW iX and 84% for the Mercedes-Benz G-Class Electric. That is close enough that capacity loss should not decide between them. Both use NMC-type cells, so for daily use keep the charge limit near 80% to slow degradation.
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 BMW iX comparisons
More Mercedes-Benz G-Class Electric 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 BMW iX and Mercedes-Benz G-Class Electric rank among the best family EVsWhere the BMW iX and Mercedes-Benz G-Class Electric rank among the best electric SUVsWhere the BMW iX and Mercedes-Benz G-Class Electric rank among the best motorway EVsWhere the BMW iX and Mercedes-Benz G-Class Electric rank among the best city EVsWhere the BMW iX and Mercedes-Benz G-Class Electric rank among the cheapest EVs to runWhere the BMW iX and Mercedes-Benz G-Class Electric 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.
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .