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Audi A6 Sportback e-tron vs Mercedes-Benz CLA
Selected trimperformanceChange trim463 mi · 100 kWh · £69,900
Selected trim250+ Sport EditionChange trim484 mi · 85 kWh · £45,615
At a glance
In this comparison, Audi A6 Sportback e-tron leads on family practicality, while the Mercedes-Benz CLA leads on value for money, charging speed and running costs.
Which should you choose?
Choose the Audi A6 Sportback e-tron if...
- you need the most family-friendly option with good safety and space
Choose the Mercedes-Benz CLA if...
- you want the most for your money - best overall spec per pound
- you need the fastest charging of these options
- you want the lowest running costs - from just 1.5p 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 CLA leads in the most categories, but each car here has its strengths.
ValueMercedes-Benz
Audi
6.6
Mercedes-Benz
7.9
Motorway Range
Audi
8.8
Mercedes-Benz
9
Too close to call
FamilyAudi
Audi
7.7
Mercedes-Benz
6.5
ChargingMercedes-Benz
Audi
6.8
Mercedes-Benz
7.7
Cost Per MileMercedes-Benz
Audi
8.4
Mercedes-Benz
9.8
City DrivingMercedes-Benz
Audi
1.9
Mercedes-Benz
3.9
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
Mercedes-Benz CLA
250+ Sport Edition
- £24,285 cheaper
- 50 kW faster rapid charging
- 1.1 m tighter turning circle
Key specifications
Compare the key specifications for your selected trims.
| Measure | Audi A6 Sportback e-tronperformance | Mercedes-Benz CLA250+ Sport Edition |
|---|---|---|
| Price | £69,900 | £45,615 (better) |
| Official range | 463 miles | 484 miles (better) |
| Boot space | 502 L (better) | 405 L |
| 10-80% rapid charge | 21 min | Not available |
| 0-62 mph | 5.4 sec (better) | 6.7 sec |
Size Comparison
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Audi A6 Sportback e-tron
Mercedes-Benz CLA
Length
Audi A6 Sportback e-tron4,928mm
Mercedes-Benz CLA4,723mm-205mm
Width
Audi A6 Sportback e-tron1,882mm
Mercedes-Benz CLA1,855mm-27mm
Height
Audi A6 Sportback e-tron1,487mm
Mercedes-Benz CLA1,468mm-19mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | Audi A6 Sportback e-tronperformance | Mercedes-Benz CLA250+ Sport Edition |
|---|---|---|
| Length | 4,928 mm | 4,723 mm |
| Width (mirrors folded) | 1,882 mm | 1,855 mm (better) |
| Width with mirrors out | 2,137 mm | Not available |
| Height | 1,487 mm | 1,468 mm |
| Turning circle | 12.3 m | 11.2 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 518 mm spare | 545 mm spare (better) |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | Audi A6 Sportback e-tronperformance | Mercedes-Benz CLA250+ Sport Edition |
|---|---|---|
| Seats | 5 | Not available |
| Boot space (seats up) | 502 L (better) | 405 L |
| Boot space (seats down) | 1330 L | Not available |
| Frunk | 27 L | 101 L (better) |
How each stacks up
Percentile ranks against UK EVs of the same body style.
Audi A6 Sportback e-tron
Not enough peers to make confident percentile claims.
Mercedes-Benz CLA
- A 101 L frunk, one of 7 of 232 UK EVs in our catalogue with a front boot of 101 L or more.
- 484 mile WLTP range, longer than 95% of saloon EVs we track.
- At 4,723 mm, shorter than 85% of saloon EVs in our UK catalogue.
Full specifications
| Specification |  Audi A6 Sportback e-tron performance |  Mercedes-Benz CLA 250+ Sport Edition |
|---|---|---|
| Dimensions | ||
| Length | 4.93m | 4.72m-205mm |
| Width | 1.88m | 1.85m-27mm |
| Width (mirrors) | 2.14m | Not available |
| Height | 1.49m | 1.47m-19mm |
| Wheelbase | 2.95m | 2.79m-156mm |
| Capacity | ||
| Boot (seats up) | 502L (better) | 405L |
| Boot (seats down) | 1330L | Not available |
| Frunk | 27L | 101L (better) |
| Seats | 5 | Not available |
| Practicality | ||
| Turning Circle | 12.3m | 11.21m (better) |
| Kerb Weight | 2,250kg | Not available |
| Electric | ||
| Battery | 100kWh (better) | 85kWh |
| Range (WLTP) | 463 mi | 484 mi (better) |
| Max DC Charge | 270kW | 320kW (better) |
| Pricing | ||
| UK MSRP | £69,900 | £45,615 (better) |
| Details | ||
| Body Style | Saloon | Saloon |
| Available | 2024+ | 2025+ |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | Audi A6 Sportback e-tronperformance | Mercedes-Benz CLA250+ Sport Edition |
|---|---|---|
| Official range (WLTP) | 463 miles | 484 miles (better) |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 386 miles | 403 miles (better) |
| 10-80% rapid charge time | 21 min | Not available |
| Max rapid charge rate | 270 kW | 320 kW (better) |
| Home AC charging | 11 kW | Not available |
| Usable battery capacity | 94.9 kWh (better) | 85 kWh |
| Battery chemistry | NMC | Not available |
| 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 | Audi A6 Sportback e-tronperformance | Mercedes-Benz CLA250+ Sport Edition |
|---|---|---|
| 0-62 mph | 5.4 sec (better) | 6.7 sec |
| Power | 280 kW (better) | 200 kW |
| Torque | 565 Nm (better) | 335 Nm |
| Drivetrain | RWD | RWD |
What the critics say
See how UK motoring publications rate each car in their road tests.
Audi A6 Sportback e-tron
performance
Mercedes-Benz CLA
250+ Sport Edition
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
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 A6 Sportback e-tron performance
Tested 2025
Adult Occupant92%
Child Occupant91%
Safety Assist80%
Full result on euroncap.com (opens in new tab)
Euro NCAP - Mercedes-Benz CLA 250+ Sport Edition
Tested 2025
Adult Occupant94%
Child Occupant89%
Vulnerable Road Users93%
Safety Assist85%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | Audi A6 Sportback e-tronperformance | Mercedes-Benz CLA250+ Sport Edition |
|---|---|---|
| Battery warranty | 8 years | Not available |
| Battery warranty distance | 160,934 km | Not available |
Buying options
Get a quote
Audi A6 Sportback e-tron
Used on AutoTraderLease deals
Mercedes-Benz CLA
Used on AutoTraderLease deals
Frequently asked questions
Is the Audi A6 Sportback e-tron worth the extra £24,285 over the Mercedes-Benz CLA?
The Audi A6 Sportback e-tron costs £24,285 more than the Mercedes-Benz CLA. For that premium it adds 97 litres more boot space, 80 kW more power and a 1.3s quicker 0-62mph time. The Mercedes-Benz CLA is not just cheaper - it also offers 50 kW faster peak rapid charging. On EVcarsguide's combined category scores, the Mercedes-Benz CLA comes out ahead overall.
Which is cheaper to own over 5 years, the Audi A6 Sportback e-tron or the Mercedes-Benz CLA?
The Mercedes-Benz CLA is £24,285 cheaper to buy. Running costs are almost identical - about £120 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Mercedes-Benz CLA comes out roughly £24,405 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 A6 Sportback e-tron and Mercedes-Benz CLA like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 386 miles for the Audi A6 Sportback e-tron and 403 miles for the Mercedes-Benz CLA - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Mercedes-Benz CLA goes roughly 17 miles further between charging stops.
Which is easier to park and drive in town, the Audi A6 Sportback e-tron or the Mercedes-Benz CLA?
The two are within 27 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 545 mm of total clearance for the Mercedes-Benz CLA and about 518 mm of total clearance for the Audi A6 Sportback e-tron. The Mercedes-Benz CLA also turns in a 1.1 m tighter circle, which helps with U-turns and multi-storey ramps.
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 A6 Sportback e-tron comparisons
More Mercedes-Benz CLA 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 A6 Sportback e-tron and Mercedes-Benz CLA rank among long-range EVsWhere the Audi A6 Sportback e-tron and Mercedes-Benz CLA rank among the best motorway EVsWhere the Audi A6 Sportback e-tron and Mercedes-Benz CLA rank among the best city EVsWhere the Audi A6 Sportback e-tron and Mercedes-Benz CLA rank among the cheapest EVs to runWhere the Audi A6 Sportback e-tron and Mercedes-Benz CLA rank among EVs with the biggest bootsWhere the Audi A6 Sportback e-tron and Mercedes-Benz CLA 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.
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .