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Audi Q6 Sportback e-tron vs Mercedes-Benz GLC
Selected trimquattroChange trim390 mi · 100 kWh · £71,475
Selected trim400 4MATIC405 mi · 94 kWh · £61,100
At a glance
In this comparison, Audi Q6 Sportback e-tron leads on motorway range and running costs, while the Mercedes-Benz GLC counters with the lowest price.
Which should you choose?
Choose the Audi Q6 Sportback e-tron if...
- you do long motorway journeys - it has the best estimated real-world range at speed
- you want the lowest running costs - from just 2.2p per mile on off-peak electricity
How we reached the recommendation
Verdict
Our take
The Audi Q6 Sportback e-tron edges ahead overall, but it's close - check which categories matter most to you.
Value
Audi
5.7
Mercedes-Benz
6
Too close to call
Motorway RangeAudi
Audi
8.3
Mercedes-Benz
6.9
Family
Audi
7.5
Mercedes-Benz
7.9
Too close to call
Charging
Audi
8.2
Mercedes-Benz
8.2
Too close to call
Cost Per MileAudi
Audi
4.2
Mercedes-Benz
3.5
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
Mercedes-Benz GLC
400 4MATIC
- £10,375 cheaper
- 60 kW faster rapid charging
- 75 kW more power
- 400 kg more towing capacity
Key specifications
Compare the key specifications for your selected trims.
| Measure | Audi Q6 Sportback e-tronquattro | Mercedes-Benz GLC400 4MATIC |
|---|---|---|
| Price | £71,475 | £61,100 (better) |
| Official range | 390 miles | 405 miles (better) |
| Boot space | 511 L | 520 L (better) |
| 10-80% rapid charge | 22 min | 22 min |
| 0-62 mph | 5.9 sec (better) | 6.9 sec |
Size Comparison
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Audi Q6 Sportback e-tron
Mercedes-Benz GLC
Length
Audi Q6 Sportback e-tron4,771mm-74mm
Mercedes-Benz GLC4,845mm
Width
Audi Q6 Sportback e-tron1,939mm
Mercedes-Benz GLC1,913mm-26mm
Height
Audi Q6 Sportback e-tron1,665mm
Mercedes-Benz GLC1,644mm-21mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | Audi Q6 Sportback e-tronquattro | Mercedes-Benz GLC400 4MATIC |
|---|---|---|
| Length | 4,771 mm | 4,845 mm |
| Width (mirrors folded) | 1,939 mm | 1,913 mm (better) |
| Width with mirrors out | 2,193 mm | 2,089 mm (better) |
| Height | 1,665 mm | 1,644 mm |
| Turning circle | 12.1 m | 12.1 m |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 461 mm spare | 487 mm spare (better) |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | Audi Q6 Sportback e-tronquattro | Mercedes-Benz GLC400 4MATIC |
|---|---|---|
| Seats | 5 | 5 |
| Boot space (seats up) | 511 L | 520 L (better) |
| Boot space (seats down) | 1373 L | Not available |
| Towing capacity (braked) | 2,000 kg | 2,400 kg (better) |
How each stacks up
Percentile ranks against UK EVs of the same body style.
Audi Q6 Sportback e-tron
- 390 mile WLTP range, longer than 95% of SUVs we track.
- Peak DC charging of 270 kW, faster than 85% of SUVs in our catalogue.
- Braked towing capacity of 2,000 kg, a stronger tow rating than 85% of SUVs we track.
Mercedes-Benz GLC
- 405 mile WLTP range, longer than 100% of SUVs we track.
- Peak DC charging of 330 kW, faster than 90% of SUVs in our catalogue.
- At 4,845 mm, longer than 85% of SUVs we track.
Full specifications
| Specification |  Audi Q6 Sportback e-tron quattro |  Mercedes-Benz GLC 400 4MATIC |
|---|---|---|
| Dimensions | ||
| Length | 4.77m | 4.84m+74mm |
| Width | 1.94m | 1.91m-26mm |
| Width (mirrors) | 2.19m | 2.09m-104mm |
| Height | 1.67m | 1.64m-21mm |
| Wheelbase | 2.89m | 2.97m+83mm |
| Capacity | ||
| Boot (seats up) | 511L | 520L (better) |
| Boot (seats down) | 1373L | Not available |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 12.1m | 12.1m |
| Kerb Weight | 2,150kg (better) | 2,581kg |
| Towing Capacity | 2,000kg | 2,400kg (better) |
| Electric | ||
| Battery | 100kWh (better) | 94kWh |
| Range (WLTP) | 390 mi | 405 mi (better) |
| Max DC Charge | 270kW | 330kW (better) |
| Pricing | ||
| UK MSRP | £71,475 | £61,100 (better) |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2025+ | 2026+ |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | Audi Q6 Sportback e-tronquattro | Mercedes-Benz GLC400 4MATIC |
|---|---|---|
| Official range (WLTP) | 390 miles | 405 miles (better) |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 325 miles (better) | 297 miles |
| 10-80% rapid charge time | 22 min | 22 min |
| Max rapid charge rate | 270 kW | 330 kW (better) |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | Not available | 164 Wh/km |
| Usable battery capacity | 94.9 kWh (better) | 94 kWh |
| Battery chemistry | NMC | NMC |
| Battery architecture | 800V | 800V |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | Audi Q6 Sportback e-tronquattro | Mercedes-Benz GLC400 4MATIC |
|---|---|---|
| 0-62 mph | 5.9 sec (better) | 6.9 sec |
| Power | 285 kW | 360 kW (better) |
| Torque | 485 Nm | 800 Nm (better) |
| Drivetrain | AWD | AWD |
What the critics say
See how UK motoring publications rate each car in their road tests.
Audi Q6 Sportback e-tron
quattro
Mercedes-Benz GLC
400 4MATIC
Watch the reviews
Watch selected video reviews here, or visit each model page for the full collection.
Audi Q6 Sportback e-tron
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 - Audi Q6 Sportback e-tron quattro
Tested 2024
Adult Occupant91%
Child Occupant92%
Vulnerable Road Users81%
Safety Assist80%
Full result on euroncap.com (opens in new tab)
Euro NCAP - Mercedes-Benz GLC 400 4MATIC
Tested 2025
Adult Occupant92%
Child Occupant90%
Vulnerable Road Users74%
Safety Assist84%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | Audi Q6 Sportback e-tronquattro | Mercedes-Benz GLC400 4MATIC |
|---|---|---|
| Battery warranty | 8 years | Not available |
| Battery warranty distance | 160,934 km | Not available |
Buying options
Get a quote
Audi Q6 Sportback e-tron
Used on AutoTraderLease deals
Mercedes-Benz GLC
Used on AutoTraderLease deals
Frequently asked questions
Is the Audi Q6 Sportback e-tron worth the extra £10,375 over the Mercedes-Benz GLC?
The Audi Q6 Sportback e-tron costs £10,375 more than the Mercedes-Benz GLC. For that premium it adds a 1.0s quicker 0-62mph time. The Mercedes-Benz GLC is not just cheaper - it also offers 60 kW faster peak rapid charging and 75 kW more power. On EVcarsguide's combined category scores, the Audi Q6 Sportback e-tron comes out ahead overall.
Which is cheaper to own over 5 years, the Audi Q6 Sportback e-tron or the Mercedes-Benz GLC?
The Mercedes-Benz GLC is £10,375 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 GLC comes out roughly £10,375 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.
What are the Audi Q6 Sportback e-tron and Mercedes-Benz GLC like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 325 miles for the Audi Q6 Sportback e-tron and 297 miles for the Mercedes-Benz GLC - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Audi Q6 Sportback e-tron goes roughly 28 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 22-22 minutes.
Which is easier to park and drive in town, the Audi Q6 Sportback e-tron or the Mercedes-Benz GLC?
The two are within 26 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 487 mm of total clearance for the Mercedes-Benz GLC and about 461 mm of total clearance for the Audi Q6 Sportback e-tron.
Which battery will hold up better as a used buy, the Audi Q6 Sportback e-tron or the Mercedes-Benz GLC?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the Audi Q6 Sportback e-tron and 84% for the Mercedes-Benz GLC. 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 Audi Q6 Sportback e-tron comparisons
More Mercedes-Benz GLC 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 Audi Q6 Sportback e-tron and Mercedes-Benz GLC rank among the best family EVsWhere the Audi Q6 Sportback e-tron and Mercedes-Benz GLC rank among the best electric SUVsWhere the Audi Q6 Sportback e-tron and Mercedes-Benz GLC rank among long-range EVsWhere the Audi Q6 Sportback e-tron and Mercedes-Benz GLC rank among the best motorway EVsWhere the Audi Q6 Sportback e-tron and Mercedes-Benz GLC rank among the best city EVsWhere the Audi Q6 Sportback e-tron and Mercedes-Benz GLC 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.
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 .