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Mercedes-Benz GLB vs MG IM6
Selected trim250+ Electric380 mi · 85 kWh · £46,100
Selected trim100 Long RangeChange trim388 mi · 100 kWh · £47,995
At a glance
In this comparison, Mercedes-Benz GLB leads on value for money, family practicality and running costs, while the MG IM6 stays competitive across the board.
Which should you choose?
Choose the Mercedes-Benz GLB if...
- you want the most for your money - best overall spec per pound
- you need the most family-friendly option with good safety and space
- you want the lowest running costs - from just 2.2p per mile on off-peak electricity
How we reached the recommendation
Verdict
Our take
The Mercedes-Benz GLB leads in the most categories, but each car here has its strengths.
ValueMercedes-Benz
Mercedes-Benz
7
MG
5.8
Motorway Range
Mercedes-Benz
6.3
MG
6
Too close to call
FamilyMercedes-Benz
Mercedes-Benz
8.7
MG
5.1
Charging
Mercedes-Benz
9.1
MG
9.1
Too close to call
Cost Per MileMercedes-Benz
Mercedes-Benz
3.5
MG
1.8
City Driving
Mercedes-Benz
4
MG
3.7
Too close to call
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
MG IM6
100 Long Range
- 125 litres more boot space
- 76 kW faster rapid charging
- 100 kW more power
- 2.0s quicker 0-62 mph
- 1.0 m tighter turning circle
Key specifications
Compare the key specifications for your selected trims.
| Measure | Mercedes-Benz GLB250+ Electric | MG IM6100 Long Range |
|---|---|---|
| Price | £46,100 (better) | £47,995 |
| Official range | 380 miles | 388 miles (better) |
| Boot space | 540 L | 665 L (better) |
| 10-80% rapid charge | 20 min | 17 min (better) |
| 0-62 mph | 7.4 sec | 5.4 sec (better) |
Size Comparison
View:
Align by:
Mercedes-Benz GLB
MG IM6
Length
Mercedes-Benz GLB4,732mm-172mm
MG IM64,904mm
Width
Mercedes-Benz GLB1,861mm-127mm
MG IM61,988mm
Height
Mercedes-Benz GLB1,687mm
MG IM61,669mm-18mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | Mercedes-Benz GLB250+ Electric | MG IM6100 Long Range |
|---|---|---|
| Length | 4,732 mm | 4,904 mm |
| Width (mirrors folded) | 1,861 mm (better) | 1,988 mm |
| Width with mirrors out | 2,029 mm (better) | 2,190 mm |
| Height | 1,687 mm | 1,669 mm |
| Turning circle | 11.2 m | 10.2 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 539 mm spare (better) | 412 mm spare |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | Mercedes-Benz GLB250+ Electric | MG IM6100 Long Range |
|---|---|---|
| Seats | 7 (better) | 5 |
| ISOFIX child-seat points | Not available | 2 |
| Boot space (seats up) | 540 L | 665 L (better) |
| Boot space (seats down) | Not available | 1640 L |
| Frunk | 127 L (better) | 32 L |
| Towing capacity (braked) | 1,500 kg | 1,500 kg |
How each stacks up
Percentile ranks against UK EVs of the same body style.
Mercedes-Benz GLB
- A 127 L frunk, one of 4 of 232 UK EVs in our catalogue with a front boot of 127 L or more.
- 380 mile WLTP range, longer than 90% of SUVs we track.
- Peak DC charging of 320 kW, faster than 90% of SUVs in our catalogue.
MG IM6
- 388 mile WLTP range, longer than 90% of SUVs we track.
- At 4,904 mm, longer than 85% of SUVs we track.
- Peak DC charging of 396 kW, faster than 100% of SUVs in our catalogue.
Full specifications
| Specification |  Mercedes-Benz GLB 250+ Electric |  MG IM6 100 Long Range |
|---|---|---|
| Dimensions | ||
| Length | 4.73m | 4.90m+172mm |
| Width | 1.86m | 1.99m+127mm |
| Width (mirrors) | 2.03m | 2.19m+161mm |
| Height | 1.69m | 1.67m-18mm |
| Wheelbase | 2.89m | 2.95m+62mm |
| Capacity | ||
| Boot (seats up) | 540L | 665L (better) |
| Boot (seats down) | Not available | 1640L |
| Frunk | 127L (better) | 32L |
| Seats | 7 (better) | 5 |
| Practicality | ||
| Turning Circle | 11.2m | 10.18m (better) |
| Kerb Weight | 2,270kg (better) | 2,320kg |
| Towing Capacity | 1,500kg | 1,500kg |
| Electric | ||
| Battery | 85kWh | 100kWh (better) |
| Range (WLTP) | 380 mi | 388 mi (better) |
| Max DC Charge | 320kW | 396kW (better) |
| Pricing | ||
| UK MSRP | £46,100 (better) | £47,995 |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2026+ | 2025+ |
* MG IM6: Not yet Euro NCAP tested as of 2026-05. Limited-production / halo / pre-launch / new-brand models are typically rated some time after general sale.
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | Mercedes-Benz GLB250+ Electric | MG IM6100 Long Range |
|---|---|---|
| Official range (WLTP) | 380 miles | 388 miles (better) |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 268 miles | 275 miles (better) |
| 10-80% rapid charge time | 20 min | 17 min (better) |
| Max rapid charge rate | 320 kW | 396 kW (better) |
| Home AC charging | 22 kW (better) | 11 kW |
| Energy consumption | 164 Wh/km (better) | 182 Wh/km |
| Usable battery capacity | 85 kWh | 96.5 kWh (better) |
| Battery chemistry | NMC | NMC |
| Battery architecture | 800V | 800V |
| Heat pump | Not available | Standard |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | Mercedes-Benz GLB250+ Electric | MG IM6100 Long Range |
|---|---|---|
| 0-62 mph | 7.4 sec | 5.4 sec (better) |
| Power | 200 kW | 300 kW (better) |
| Torque | 335 Nm | 500 Nm (better) |
| Drivetrain | RWD | RWD |
What the critics say
See how UK motoring publications rate each car in their road tests.
Mercedes-Benz GLB
250+ Electric
MG IM6
100 Long Range
Watch the reviews
Watch selected video reviews here, or visit each model page for the full collection.
Mercedes-Benz GLB
All 3 videos
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 - Mercedes-Benz GLB 250+ Electric
Tested 2025
Adult Occupant92%
Child Occupant88%
Vulnerable Road Users78%
Safety Assist74%
Full result on euroncap.com (opens in new tab)
Euro NCAP - MG IM6 100 Long Range
MG IM6 100 Long Range
Not yet Euro NCAP tested as of 2026-05. Limited-production / halo / pre-launch / new-brand models are typically rated some time after general sale.
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | Mercedes-Benz GLB250+ Electric | MG IM6100 Long Range |
|---|---|---|
| Battery warranty | Not available | 8 years |
| Battery warranty distance | Not available | 160,934 km |
Buying options
Get a quote
Mercedes-Benz GLB
Used on AutoTraderLease deals
MG IM6
Used on AutoTraderLease deals
Live used listings
Active inventory from independent UK dealers.
Mercedes-Benz GLB
No active listings.
MG IM6
- £35,4582026Car360View
- £34,9902026Cars2View
- £35,2902025Cars2View
Frequently asked questions
Is the MG IM6 worth the extra £1,895 over the Mercedes-Benz GLB?
The MG IM6 costs £1,895 more than the Mercedes-Benz GLB. For that premium it adds 76 kW faster peak rapid charging, 125 litres more boot space and 100 kW more power. The Mercedes-Benz GLB is not just cheaper - it also offers 2 more seats (7 versus 5) and lower energy use, 164 versus 182 Wh/km. On EVcarsguide's combined category scores, the Mercedes-Benz GLB comes out ahead overall.
Which is cheaper to own over 5 years, the Mercedes-Benz GLB or the MG IM6?
The Mercedes-Benz GLB is £1,895 cheaper to buy. Running costs are almost identical - about £176 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Mercedes-Benz GLB comes out roughly £2,015 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 GLB and MG IM6 like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 268 miles for the Mercedes-Benz GLB and 275 miles for the MG IM6 - effectively matched, and both well below their WLTP figures because sustained high speed is the hardest case for an EV. Both rapid-charge to 80% in a similar time, around 17-20 minutes.
Which is easier to park and drive in town, the Mercedes-Benz GLB or the MG IM6?
The Mercedes-Benz GLB is the easier car for tight UK car parks: it is 127 mm narrower than the MG IM6. In a standard 2,400 mm bay that leaves about 539 mm of total clearance for the Mercedes-Benz GLB and about 412 mm of total clearance for the MG IM6. The MG IM6 also turns in a 1.0 m tighter circle, which helps with U-turns and multi-storey ramps.
Which battery will hold up better as a used buy, the Mercedes-Benz GLB or the MG IM6?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the Mercedes-Benz GLB and 84% for the MG IM6. 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 Mercedes-Benz GLB comparisons
More MG IM6 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 GLB and MG IM6 rank among the best family EVsWhere the Mercedes-Benz GLB and MG IM6 rank among the best electric SUVsWhere the Mercedes-Benz GLB and MG IM6 rank among long-range EVsWhere the Mercedes-Benz GLB and MG IM6 rank among the best motorway EVsWhere the Mercedes-Benz GLB and MG IM6 rank among the best city EVsWhere the Mercedes-Benz GLB and MG IM6 rank among the cheapest EVs to run
If neither is quite right
Explore other verified electric cars that may better suit the priorities this pair does not meet.
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .