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Mercedes-Benz GLB vs Tesla Model X
Selected trim250+ Electric380 mi · 85 kWh · £46,100
Selected trim75D · 2016-19Change trim238 mi · 75 kWh · £82,050
At a glance
In this comparison, Mercedes-Benz GLB leads on value for money, motorway range and charging speed, while the Tesla Model X 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 do long motorway journeys - it has the best estimated real-world range at speed
- you need the fastest charging of these options
- you want the lowest running costs - from just 2.2p 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 GLB wins almost every category - it's the clear choice unless price is the deciding factor.
ValueMercedes-Benz
Mercedes-Benz
7
Tesla
3.4
Motorway RangeMercedes-Benz
Mercedes-Benz
6.3
Tesla
1.5
Family
Mercedes-Benz
8.7
Tesla
8.5
Too close to call
ChargingMercedes-Benz
Mercedes-Benz
9.1
Tesla
2.1
Cost Per MileMercedes-Benz
Mercedes-Benz
3.5
Tesla
0.4
City DrivingMercedes-Benz
Mercedes-Benz
4
Tesla
0.6
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
Mercedes-Benz GLB
250+ Electric
- £35,950 cheaper
- 142 miles more WLTP range
- 200 kW faster rapid charging
- 20 min quicker 10-80% rapid charge
- 56 Wh/km more efficient
- 1.2 m tighter turning circle
Tesla Model X
75D
- 205 litres more boot space
- 83 kW more power
- 1.1s quicker 0-62 mph
- 768 kg more towing capacity
Key specifications
Compare the key specifications for your selected trims.
| Measure | Mercedes-Benz GLB250+ Electric | Tesla Model X75D |
|---|---|---|
| Price | £46,100 (better) | £82,050 |
| Official range | 380 miles (better) | 238 miles |
| Boot space | 540 L | 745 L (better) |
| 10-80% rapid charge | 20 min (better) | 40 min |
| 0-62 mph | 7.4 sec | 6.3 sec (better) |
Size Comparison
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Mercedes-Benz GLB
Tesla Model X
Length
Mercedes-Benz GLB4,732mm-325mm
Tesla Model X5,057mm
Width
Mercedes-Benz GLB1,861mm-138mm
Tesla Model X1,999mm
Height
Mercedes-Benz GLB1,687mm
Tesla Model X1,684mm-3mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | Mercedes-Benz GLB250+ Electric | Tesla Model X75D |
|---|---|---|
| Length | 4,732 mm | 5,057 mm |
| Width (mirrors folded) | 1,861 mm (better) | 1,999 mm |
| Width with mirrors out | 2,029 mm (better) | 2,271 mm |
| Height | 1,687 mm | 1,684 mm |
| Turning circle | 11.2 m (better) | 12.4 m |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 539 mm spare (better) | 401 mm spare |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | Mercedes-Benz GLB250+ Electric | Tesla Model X75D |
|---|---|---|
| Seats | 7 | 7 |
| ISOFIX child-seat points | Not available | 4 |
| Boot space (seats up) | 540 L | 745 L (better) |
| Boot space (seats down) | Not available | 2492 L |
| Frunk | 127 L | 183 L (better) |
| Towing capacity (braked) | 1,500 kg | 2,268 kg (better) |
How each stacks up
Percentile ranks against UK EVs of the same body style.
Mercedes-Benz GLB
- A 127 L frunk, one of 3 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.
Tesla Model X
- At 5,057 mm, longer than 95% of SUVs we track.
- A 183 L frunk, one of 1 of 232 UK EVs in our catalogue with a front boot of 183 L or more.
- Boot space of 745 L is bigger than 95% of SUVs we track.
Full specifications
| Specification |  Mercedes-Benz GLB 250+ Electric |  Tesla Model X 75D |
|---|---|---|
| Dimensions | ||
| Length | 4.73m | 5.06m+325mm |
| Width | 1.86m | 2.00m+138mm |
| Width (mirrors) | 2.03m | 2.27m+242mm |
| Height | 1.69m | 1.68m-3mm |
| Wheelbase | 2.89m | 2.96m+77mm |
| Ground Clearance | Not available | 180mm |
| Capacity | ||
| Boot (seats up) | 540L | 745L (better) |
| Boot (seats down) | Not available | 2492L |
| Frunk | 127L | 183L (better) |
| Seats | 7 | 7 |
| Practicality | ||
| Turning Circle | 11.2m (better) | 12.4m |
| Kerb Weight | 2,270kg (better) | 2,352kg |
| Towing Capacity | 1,500kg | 2,268kg (better) |
| Electric | ||
| Battery | 85kWh (better) | 75kWh |
| Range (WLTP) | 380 mi (better) | 238 mi |
| Max DC Charge | 320kW (better) | 120kW |
| Pricing | ||
| UK MSRP | £46,100 (better) | £82,050 |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2026+ | 2016–2019 |
* Tesla Model X: NEDC-era estimate — official WLTP not published for this variant
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | Mercedes-Benz GLB250+ Electric | Tesla Model X75D |
|---|---|---|
| Official range (WLTP) | 380 miles (better) | 238 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 268 miles (better) | 171 miles |
| 10-80% rapid charge time | 20 min (better) | 40 min |
| Max rapid charge rate | 320 kW (better) | 120 kW |
| Home AC charging | 22 kW (better) | 11 kW |
| Energy consumption | 164 Wh/km (better) | 220 Wh/km |
| Usable battery capacity | 85 kWh (better) | 72.5 kWh |
| Battery chemistry | NMC | NCA |
| Battery architecture | 800V (better) | 400V |
| Heat pump | Not available | Not standard |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | Mercedes-Benz GLB250+ Electric | Tesla Model X75D |
|---|---|---|
| 0-62 mph | 7.4 sec | 6.3 sec (better) |
| Power | 200 kW | 283 kW (better) |
| Torque | 335 Nm | 430 Nm (better) |
| Drivetrain | RWD | AWD |
What the critics say
See how UK motoring publications rate each car in their road tests.
Mercedes-Benz GLB
250+ Electric
Tesla Model X
75D
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 - Tesla Model X 75D
Tested 2019
Adult Occupant98%
Child Occupant81%
Vulnerable Road Users72%
Safety Assist94%
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | Mercedes-Benz GLB250+ Electric | Tesla Model X75D |
|---|---|---|
| Battery warranty | Not available | 8 years |
| Battery warranty distance | Not available | 240,000 km |
Buying options
Get a quote
Mercedes-Benz GLB
Used on AutoTraderLease deals
Tesla Model X
Used on AutoTraderLease deals
Live used listings
Active inventory from independent UK dealers.
Mercedes-Benz GLB
No active listings.
Tesla Model X
- £20,5002017EVHEROView
- £87,9952019EVHEROView
- £76,4952017EVHEROView
Frequently asked questions
Is the Tesla Model X worth the extra £35,950 over the Mercedes-Benz GLB?
The Tesla Model X costs £35,950 more than the Mercedes-Benz GLB. For that premium it adds 205 litres more boot space, 83 kW more power and a 1.1s quicker 0-62mph time. The Mercedes-Benz GLB is not just cheaper - it also offers 142 miles more WLTP range, 200 kW faster peak rapid charging and lower energy use, 164 versus 220 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 Tesla Model X?
The Mercedes-Benz GLB is £35,950 cheaper to buy. The Mercedes-Benz GLB is cheaper to charge, roughly £176 a year versus £240 for the Tesla Model X, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Mercedes-Benz GLB comes out roughly £36,270 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 Tesla Model X like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 268 miles for the Mercedes-Benz GLB and 171 miles for the Tesla Model X - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Mercedes-Benz GLB goes roughly 98 miles further between charging stops. A rapid charge to 80% takes around 20 minutes in the Mercedes-Benz GLB and 40 in the Tesla Model X, so the Mercedes-Benz GLB loses less time at each stop. That makes the Mercedes-Benz GLB the stronger long-distance car.
Which is easier to park and drive in town, the Mercedes-Benz GLB or the Tesla Model X?
The Mercedes-Benz GLB is the easier car for tight UK car parks: it is 138 mm narrower than the Tesla Model X. In a standard 2,400 mm bay that leaves about 539 mm of total clearance for the Mercedes-Benz GLB and about 401 mm of total clearance for the Tesla Model X. The Mercedes-Benz GLB also turns in a 1.2 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 Tesla Model X?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the Mercedes-Benz GLB and 84% for the Tesla Model X. 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 Tesla Model X 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 Tesla Model X rank among the best family EVsWhere the Mercedes-Benz GLB and Tesla Model X rank among the best electric SUVsWhere the Mercedes-Benz GLB and Tesla Model X rank among the best 7-seater EVsWhere the Mercedes-Benz GLB and Tesla Model X rank among the best motorway EVsWhere the Mercedes-Benz GLB and Tesla Model X rank among the best city EVsWhere the Mercedes-Benz GLB and Tesla Model X 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 .