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BMW iX3 (2021-2025) vs Mercedes-Benz EQB
Selected trimPremier Edition · 2021Change trim279 mi · 80 kWh · £58,850
Selected trim300 4MATIC · 2022-25Change trim257 mi · 69.7 kWh · £52,145
At a glance
The Mercedes-Benz EQB was replaced by the Mercedes-Benz GLB in 2026. Compare the BMW iX3 with the Mercedes-Benz GLB
In this comparison, BMW iX3 leads on charging speed, while the Mercedes-Benz EQB leads on motorway range, running costs and city driving.
Which should you choose?
Choose the BMW iX3 (2021-2025) if...
- you need the fastest charging of these options
Choose the Mercedes-Benz EQB if...
- you do long motorway journeys - it has the best estimated real-world range at speed
- you want the lowest running costs - from just 2.3p 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 Mercedes-Benz EQB leads in the most categories, but each car here has its strengths.
Value
BMW
4.7
Mercedes-Benz
4.3
Too close to call
Motorway RangeMercedes-Benz
BMW
2.2
Mercedes-Benz
3.7
Family
BMW
7.6
Mercedes-Benz
7.8
Too close to call
ChargingBMW
BMW
3.8
Mercedes-Benz
2.1
Cost Per MileMercedes-Benz
BMW
1
Mercedes-Benz
3
City DrivingMercedes-Benz
BMW
2.3
Mercedes-Benz
3.9
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
Mercedes-Benz EQB
300 4MATIC
- £6,705 cheaper
- 0.4 m tighter turning circle
- 2 more seats
- 950 kg more towing capacity
Key specifications
Compare the key specifications for your selected trims.
| Measure | BMW iX3Premier Edition | Mercedes-Benz EQB300 4MATIC |
|---|---|---|
| Price | £58,850 | £52,145 (better) |
| Official range | 279 miles (better) | 257 miles |
| Boot space | 510 L (better) | 495 L |
| 10-80% rapid charge | 34 min | 32 min (better) |
| 0-62 mph | 6.8 sec (better) | 8 sec |
Size Comparison
View:
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BMW iX3
Mercedes-Benz EQB
Length
BMW iX34,734mm
Mercedes-Benz EQB4,684mm-50mm
Width
BMW iX31,891mm
Mercedes-Benz EQB1,834mm-57mm
Height
BMW iX31,668mm
Mercedes-Benz EQB1,667mm-1mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BMW iX3Premier Edition | Mercedes-Benz EQB300 4MATIC |
|---|---|---|
| Length | 4,734 mm | 4,684 mm |
| Width (mirrors folded) | 1,891 mm | 1,834 mm (better) |
| Width with mirrors out | Not available | 2,020 mm |
| Height | 1,668 mm | 1,667 mm |
| Turning circle | 12.1 m | 11.7 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 509 mm spare | 566 mm spare (better) |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | BMW iX3Premier Edition | Mercedes-Benz EQB300 4MATIC |
|---|---|---|
| Seats | 5 | 7 (better) |
| ISOFIX child-seat points | Not available | 4 |
| Boot space (seats up) | 510 L (better) | 495 L |
| Boot space (seats down) | 1560 L (better) | 1410 L |
| Frunk | 0 L | Not available |
| Towing capacity (braked) | 750 kg | 1,700 kg (better) |
Full specifications
| Specification |  BMW iX3 Premier Edition |  Mercedes-Benz EQB 300 4MATIC |
|---|---|---|
| Dimensions | ||
| Length | 4.73m | 4.68m-50mm |
| Width | 1.89m | 1.83m-57mm |
| Width (mirrors) | Not available | 2.02m |
| Height | 1.67m | 1.67m-1mm |
| Wheelbase | 2.86m | 2.83m-35mm |
| Ground Clearance | 179mm | 170mm-9mm |
| Capacity | ||
| Boot (seats up) | 510L (better) | 495L |
| Boot (seats down) | 1560L (better) | 1410L |
| Seats | 5 | 7 (better) |
| Practicality | ||
| Turning Circle | 12.1m | 11.7m (better) |
| Kerb Weight | 2,260kg | 2,105kg (better) |
| Towing Capacity | 750kg | 1,700kg (better) |
| Electric | ||
| Battery | 80kWh (better) | 69.7kWh |
| Range (WLTP) | 279 mi (better) | 257 mi |
| Max DC Charge | 150kW (better) | 100kW |
| Pricing | ||
| UK MSRP | £58,850 | £52,145 (better) |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2021–2021 | 2022–2025 |
* BMW iX3: Euro NCAP applied its 2017 BMW X3 rating to the iX3 after extra checks in 2021. That rating expired on 1 January 2024.
* BMW iX3: WLTP range on 20-inch wheels; the 19-inch M Sport is rated a little higher.
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | BMW iX3Premier Edition | Mercedes-Benz EQB300 4MATIC |
|---|---|---|
| Official range (WLTP) | 279 miles (better) | 257 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 196 miles | 214 miles (better) |
| 10-80% rapid charge time | 34 min | 32 min (better) |
| Max rapid charge rate | 150 kW (better) | 100 kW |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | 195 Wh/km | Not available |
| Usable battery capacity | 74 kWh (better) | 66.5 kWh |
| Battery chemistry | NMC | NMC |
| Battery architecture | 400V | 400V |
| Heat pump | Standard | Standard |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | BMW iX3Premier Edition | Mercedes-Benz EQB300 4MATIC |
|---|---|---|
| 0-62 mph | 6.8 sec (better) | 8 sec |
| Power | 210 kW (better) | 168 kW |
| Torque | 400 Nm (better) | 390 Nm |
| Drivetrain | RWD | AWD |
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.
BMW iX3
Premier Edition
No critic reviews gathered yet for this car.
Mercedes-Benz EQB
300 4MATIC
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 | BMW iX3Premier Edition | Mercedes-Benz EQB300 4MATIC |
|---|---|---|
| Used market price from | £29,663 | £25,048 |
| Average used price | £29,663 | £27,272 |
| Active used listings trackedIndependent UK dealer listings seen in the last 90 days. | 3 listings | 12 listings (better) |
| Recent used-price trend | Broadly flat | Down 2% 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 - BMW iX3 Premier Edition
Tested 2017
Adult Occupant93%
Child Occupant84%
Vulnerable Road Users70%
Safety Assist58%
Full result on euroncap.com (opens in new tab)
Euro NCAP - Mercedes-Benz EQB 300 4MATIC
Tested 2019
Adult Occupant95%
Child Occupant91%
Vulnerable Road Users78%
Safety Assist74%
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | BMW iX3Premier Edition | Mercedes-Benz EQB300 4MATIC |
|---|---|---|
| Battery warranty | 8 years | 8 years |
| Battery warranty distance | 160,934 km (better) | 160,000 km |
Buying options
Get a quote
BMW iX3
Used on AutoTraderLease deals
Mercedes-Benz EQB
Used on AutoTraderLease deals
Live used listings
Active inventory from independent UK dealers.
BMW iX3
- £29,6632021Car360View
Mercedes-Benz EQB
- £24,0992023Car360View
- £29,5992024Car360View
- £24,9102023Car360View
Frequently asked questions
Is the BMW iX3 worth the extra £6,705 over the Mercedes-Benz EQB?
The BMW iX3 costs £6,705 more than the Mercedes-Benz EQB. For that premium it adds 50 kW faster peak rapid charging, 42 kW more power and a 1.2s quicker 0-62mph time. The Mercedes-Benz EQB is not just cheaper - it also offers 2 more seats (7 versus 5). On EVcarsguide's combined category scores, the Mercedes-Benz EQB comes out ahead overall.
Which is cheaper to own over 5 years, the BMW iX3 or the Mercedes-Benz EQB?
The Mercedes-Benz EQB is £6,705 cheaper to buy. The Mercedes-Benz EQB is cheaper to charge, roughly £184 a year versus £216 for the BMW iX3, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Mercedes-Benz EQB comes out roughly £6,865 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 iX3 and Mercedes-Benz EQB like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 196 miles for the BMW iX3 and 214 miles for the Mercedes-Benz EQB - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Mercedes-Benz EQB goes roughly 18 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 32-34 minutes.
Which is easier to park and drive in town, the BMW iX3 or the Mercedes-Benz EQB?
The Mercedes-Benz EQB is the easier car for tight UK car parks: it is 57 mm narrower than the BMW iX3. In a standard 2,400 mm bay that leaves about 566 mm of total clearance for the Mercedes-Benz EQB and about 509 mm of total clearance for the BMW iX3. The Mercedes-Benz EQB also turns in a 0.4 m tighter circle, which helps with U-turns and multi-storey ramps.
Which battery will hold up better as a used buy, the BMW iX3 or the Mercedes-Benz EQB?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the BMW iX3 and 84% for the Mercedes-Benz EQB. 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. 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 BMW iX3 comparisons
More Mercedes-Benz EQB 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 iX3 and Mercedes-Benz EQB rank among the best family EVsWhere the BMW iX3 and Mercedes-Benz EQB rank among the best electric SUVsWhere the BMW iX3 and Mercedes-Benz EQB rank among the best motorway EVsWhere the BMW iX3 and Mercedes-Benz EQB rank among the best city EVsWhere the BMW iX3 and Mercedes-Benz EQB rank among the cheapest EVs to runWhere the BMW iX3 and Mercedes-Benz EQB 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.
GuideBuying a Used BMW iX3 (2021-2025): Premier Edition or M Sport, Recalls, Range & What to Check
A used BMW iX3 (2021-2025) buyer’s guide: Premier Edition and M Sport trims compared, the battery recalls, warranty left, real-world and winter range, the 750 kg towing limit, what to pay and a printable checklist.
GuideBuying a Used Mercedes EQB (2022-2025): 300, 350 or 250+, Recalls, Real Range & What to Pay
A used Mercedes EQB buyer’s guide: the seven-seat 300 and 350 4MATIC vs the 2024 250+, the steering software recall, real-world range, the battery warranty, what to pay and a printable checklist.
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .