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Mercedes-Benz EQB vs Polestar 4
Selected trim300 4MATIC · 2022-25Change trim257 mi · 69.7 kWh · £52,145
Selected trimLong range Single motor · 2024-26Change trim391 mi · 100 kWh · £59,990
At a glance
The Mercedes-Benz EQB was replaced by the Mercedes-Benz GLB in 2026. Compare the Mercedes-Benz GLB with the Polestar 4
In this comparison, Mercedes-Benz EQB leads on running costs and city driving, while the Polestar 4 leads on value for money, motorway range and charging speed.
Which should you choose?
Choose the Mercedes-Benz EQB if...
- 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
Choose the Polestar 4 if...
- you want the most for your money - best overall spec per pound
- you do long motorway journeys - it has the best estimated real-world range at speed
- you need the fastest charging of these options
How we reached the recommendation
Verdict
Our take
The Polestar 4 leads in the most categories, but each car here has its strengths.
ValuePolestar
Mercedes-Benz
4.3
Polestar
6
Motorway RangePolestar
Mercedes-Benz
3.7
Polestar
4.9
Family
Mercedes-Benz
7.8
Polestar
7.6
Too close to call
ChargingPolestar
Mercedes-Benz
2.1
Polestar
5.8
Cost Per MileMercedes-Benz
Mercedes-Benz
3
Polestar
2.1
City DrivingMercedes-Benz
Mercedes-Benz
3.9
Polestar
1.9
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
Polestar 4
Long range Single motor
- 134 miles more WLTP range
- 100 kW faster rapid charging
- 32 kW more power
- 1.8s quicker 0-62 mph
Key specifications
Compare the key specifications for your selected trims.
| Measure | Mercedes-Benz EQB300 4MATIC | Polestar 4Long range Single motor |
|---|---|---|
| Price | £52,145 (better) | £59,990 |
| Official range | 257 miles | 391 miles (better) |
| Boot space | 495 L | 530 L (better) |
| 10-80% rapid charge | 32 min | 30 min (better) |
| 0-62 mph | 8 sec | 6.2 sec (better) |
Size Comparison
View:
Align by:
Mercedes-Benz EQB
Polestar 4
Length
Mercedes-Benz EQB4,684mm-156mm
Polestar 44,840mm
Width
Mercedes-Benz EQB1,834mm-174mm
Polestar 42,008mm
Height
Mercedes-Benz EQB1,667mm
Polestar 41,556mm-111mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | Mercedes-Benz EQB300 4MATIC | Polestar 4Long range Single motor |
|---|---|---|
| Length | 4,684 mm | 4,840 mm |
| Width (mirrors folded) | 1,834 mm (better) | 2,008 mm |
| Width with mirrors out | 2,020 mm (better) | 2,139 mm |
| Height | 1,667 mm | 1,556 mm |
| Turning circle | 11.7 m | 11.6 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 566 mm spare (better) | 392 mm spare |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | Mercedes-Benz EQB300 4MATIC | Polestar 4Long range Single motor |
|---|---|---|
| Seats | 7 (better) | 5 |
| ISOFIX child-seat points | 4 (better) | 2 |
| Boot space (seats up) | 495 L | 530 L (better) |
| Boot space (seats down) | 1410 L | 1665 L (better) |
| Frunk | Not available | 15 L |
| Towing capacity (braked) | 1,700 kg (better) | 1,500 kg |
How each stacks up
Percentile ranks against UK EVs of the same body style.
Mercedes-Benz EQB
Not enough peers to make confident percentile claims.
Polestar 4
- 391 mile WLTP range, longer than 95% of SUVs we track.
- At 4,840 mm, longer than 80% of SUVs we track.
- 2,999 mm wheelbase, longer than 90% of SUVs we track.
Full specifications
| Specification |  Mercedes-Benz EQB 300 4MATIC |  Polestar 4 Long range Single motor |
|---|---|---|
| Dimensions | ||
| Length | 4.68m | 4.84m+156mm |
| Width | 1.83m | 2.01m+174mm |
| Width (mirrors) | 2.02m | 2.14m+119mm |
| Height | 1.67m | 1.56m-111mm |
| Wheelbase | 2.83m | 3.00m+170mm |
| Ground Clearance | 170mm | 166mm-4mm |
| Capacity | ||
| Boot (seats up) | 495L | 530L (better) |
| Boot (seats down) | 1410L | 1665L (better) |
| Frunk | Not available | 15L |
| Seats | 7 (better) | 5 |
| Practicality | ||
| Turning Circle | 11.7m | 11.64m (better) |
| Kerb Weight | 2,105kg (better) | 2,265kg |
| Towing Capacity | 1,700kg (better) | 1,500kg |
| Electric | ||
| Battery | 69.7kWh | 100kWh (better) |
| Range (WLTP) | 257 mi | 391 mi (better) |
| Max DC Charge | 100kW | 200kW (better) |
| Pricing | ||
| UK MSRP | £52,145 (better) | £59,990 |
| Details | ||
| Body Style | SUV | suv |
| Available | 2022–2025 | 2024–2026 |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | Mercedes-Benz EQB300 4MATIC | Polestar 4Long range Single motor |
|---|---|---|
| Official range (WLTP) | 257 miles | 391 miles (better) |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 214 miles | 277 miles (better) |
| 10-80% rapid charge time | 32 min | 30 min (better) |
| Max rapid charge rate | 100 kW | 200 kW (better) |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | Not available | 178 Wh/km |
| Usable battery capacity | 66.5 kWh | 100 kWh (better) |
| 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 | Mercedes-Benz EQB300 4MATIC | Polestar 4Long range Single motor |
|---|---|---|
| 0-62 mph | 8 sec | 6.2 sec (better) |
| Power | 168 kW | 200 kW (better) |
| Torque | 390 Nm (better) | 343 Nm |
| Drivetrain | AWD | RWD |
What the critics say
See how UK motoring publications rate each car in their road tests.
Mercedes-Benz EQB
300 4MATIC
Polestar 4
Long range Single motor
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
New and used prices
Current pricing and recent used-market behaviour.
| Measure | Mercedes-Benz EQB300 4MATIC | Polestar 4Long range Single motor |
|---|---|---|
| Used market price from | £25,048 | £32,498 |
| Average used price | £27,272 | £33,990 |
| Active used listings trackedIndependent UK dealer listings seen in the last 90 days. | 12 listings (better) | 9 listings |
| Recent used-price trend | Down 18.9% over ~6 months | Broadly flat |
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 - Mercedes-Benz EQB 300 4MATIC
Tested 2019
Adult Occupant95%
Child Occupant91%
Vulnerable Road Users78%
Safety Assist74%
Euro NCAP - Polestar 4 Long range Single motor
Tested 2025
Adult Occupant92%
Child Occupant85%
Vulnerable Road Users81%
Safety Assist79%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | Mercedes-Benz EQB300 4MATIC | Polestar 4Long range Single motor |
|---|---|---|
| Battery warranty | 8 years | 8 years |
| Battery warranty distance | 160,000 km | 160,934 km (better) |
Buying options
Get a quote
Mercedes-Benz EQB
Used on AutoTraderLease deals
Polestar 4
Used on AutoTraderLease deals
Live used listings
Active inventory from independent UK dealers.
Mercedes-Benz EQB
- £24,0992023Car360View
- £29,5992024Car360View
- £24,9102023Car360View
Polestar 4
- £33,6992024Car360View
- £33,7002025EV ExpertsView
Frequently asked questions
Is the Polestar 4 worth the extra £7,845 over the Mercedes-Benz EQB?
The Polestar 4 costs £7,845 more than the Mercedes-Benz EQB. For that premium it adds 134 miles more WLTP range, 100 kW faster peak rapid charging and 32 kW more power. The Mercedes-Benz EQB is not just cheaper - it also offers 2 more seats (7 versus 5). On EVcarsguide's combined category scores, the Polestar 4 comes out ahead overall.
Which is cheaper to own over 5 years, the Mercedes-Benz EQB or the Polestar 4?
The Mercedes-Benz EQB is £7,845 cheaper to buy. Running costs are almost identical - about £184 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Mercedes-Benz EQB comes out roughly £7,885 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.
What are the Mercedes-Benz EQB and Polestar 4 like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 214 miles for the Mercedes-Benz EQB and 277 miles for the Polestar 4 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Polestar 4 goes roughly 62 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 30-32 minutes.
Which is easier to park and drive in town, the Mercedes-Benz EQB or the Polestar 4?
The Mercedes-Benz EQB is the easier car for tight UK car parks: it is 174 mm narrower than the Polestar 4. In a standard 2,400 mm bay that leaves about 566 mm of total clearance for the Mercedes-Benz EQB and about 392 mm of total clearance for the Polestar 4.
Which battery will hold up better as a used buy, the Mercedes-Benz EQB or the Polestar 4?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the Mercedes-Benz EQB and 84% for the Polestar 4. 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 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 Mercedes-Benz EQB and Polestar 4 rank among the best family EVsWhere the Mercedes-Benz EQB and Polestar 4 rank among the best motorway EVsWhere the Mercedes-Benz EQB and Polestar 4 rank among the best city EVsWhere the Mercedes-Benz EQB and Polestar 4 rank among the cheapest EVs to runWhere the Mercedes-Benz EQB and Polestar 4 rank among EVs with the biggest bootsWhere the Mercedes-Benz EQB and Polestar 4 rank among Best Used Electric Cars Under £10,000 (UK)
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 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.
GuideBuying a Used Polestar 4 (2024 on): Single vs Dual Motor, Warranty & What to Pay
A used Polestar 4 buyer’s guide: Single and Dual motor, the no-rear-window design, the short car warranty, huge depreciation, 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 .