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Audi A6 Avant e-tron vs Audi S6 Sportback e-tron
Selected trimperformanceChange trim437 mi · 100 kWh · £71,700
Selected trimStandard411 mi · 100 kWh · £93,125
At a glance
In this comparison, Audi A6 Avant e-tron leads on motorway range and running costs, while the Audi S6 Sportback e-tron stays competitive across the board.
Which should you choose?
Choose the Audi A6 Avant 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 1.9p per mile on off-peak electricity
How we reached the recommendation
Verdict
Our take
The Audi A6 Avant e-tron edges ahead overall, but it's close - check which categories matter most to you.
Value
A6 Avant e-tron
6.4
S6 Sportback e-tron
6.1
Too close to call
Motorway RangeA6 Avant e-tron
A6 Avant e-tron
8.9
S6 Sportback e-tron
8.2
Family
A6 Avant e-tron
7.8
S6 Sportback e-tron
7.7
Too close to call
Charging
A6 Avant e-tron
4.7
S6 Sportback e-tron
4.7
Too close to call
Cost Per MileA6 Avant e-tron
A6 Avant e-tron
7
S6 Sportback e-tron
5.5
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
Key specifications
Compare the key specifications for your selected trims.
| Measure | Audi A6 Avant e-tronperformance | Audi S6 Sportback e-tronBase |
|---|---|---|
| Price | £71,700 (better) | £93,125 |
| Official range | 437 miles (better) | 411 miles |
| Boot space | 502 L | 502 L |
| 10-80% rapid charge | 21 min | 21 min |
| 0-62 mph | 4.5 sec | 3.9 sec (better) |
Size Comparison
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Audi A6 Avant e-tron
Audi S6 Sportback e-tron
Length
Audi A6 Avant e-tron4,928mm
Audi S6 Sportback e-tron4,928mm
Width
Audi A6 Avant e-tron1,887mm-36mm
Audi S6 Sportback e-tron1,923mm
Height
Audi A6 Avant e-tron1,527mm
Audi S6 Sportback e-tron1,465mm-62mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | Audi A6 Avant e-tronperformance | Audi S6 Sportback e-tronBase |
|---|---|---|
| Length | 4,928 mm | 4,928 mm |
| Width (mirrors folded) | 1,887 mm (better) | 1,923 mm |
| Width with mirrors out | 2,137 mm | Not available |
| Height | 1,527 mm | 1,465 mm |
| Turning circle | 12.3 m | 12.3 m |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 513 mm spare (better) | 477 mm spare |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | Audi A6 Avant e-tronperformance | Audi S6 Sportback e-tronBase |
|---|---|---|
| Seats | 5 | 5 |
| Boot space (seats up) | 502 L | 502 L |
| Boot space (seats down) | 1422 L (better) | 1330 L |
| Frunk | 27 L | 27 L |
How each stacks up
Percentile ranks against UK EVs of the same body style.
Audi A6 Avant e-tron
- 437 mile WLTP range, longer than 90% of estate EVs we track.
- 2,946 mm wheelbase, longer than 80% of estate EVs we track.
Audi S6 Sportback e-tron
- 411 mile WLTP range, longer than 90% of estate EVs we track.
- 2,951 mm wheelbase, longer than 80% of estate EVs we track.
Full specifications
| Specification |  Audi A6 Avant e-tron performance |  Audi S6 Sportback e-tron Base |
|---|---|---|
| Dimensions | ||
| Length | 4.93m | 4.93m |
| Width | 1.89m | 1.92m+36mm |
| Width (mirrors) | 2.14m | Not available |
| Height | 1.53m | 1.47m-62mm |
| Wheelbase | 2.95m | 2.95m+5mm |
| Capacity | ||
| Boot (seats up) | 502L | 502L |
| Boot (seats down) | 1422L (better) | 1330L |
| Frunk | 27L | 27L |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 12.3m | 12.3m |
| Kerb Weight | 2,260kg (better) | 2,400kg |
| Electric | ||
| Battery | 100kWh | 100kWh |
| Range (WLTP) | 437 mi (better) | 411 mi |
| Max DC Charge | 270kW | 270kW |
| Pricing | ||
| UK MSRP | £71,700 (better) | £93,125 |
| Details | ||
| Body Style | Estate | Estate |
| Available | 2024+ | 2025+ |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | Audi A6 Avant e-tronperformance | Audi S6 Sportback e-tronBase |
|---|---|---|
| Official range (WLTP) | 437 miles (better) | 411 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 364 miles (better) | 342 miles |
| 10-80% rapid charge time | 21 min | 21 min |
| Max rapid charge rate | 270 kW | 270 kW |
| Home AC charging | 11 kW | 11 kW |
| Usable battery capacity | 94.9 kWh | 100 kWh (better) |
| 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 A6 Avant e-tronperformance | Audi S6 Sportback e-tronBase |
|---|---|---|
| 0-62 mph | 4.5 sec | 3.9 sec (better) |
| Power | 280 kW | 404 kW (better) |
| Torque | 565 Nm | 580 Nm (better) |
| Drivetrain | RWD | AWD |
Watch the reviews
Watch selected video reviews here, or visit each model page for the full collection.
Audi A6 Avant 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 A6 Avant e-tron performance
Tested 2025
Adult Occupant92%
Child Occupant91%
Safety Assist80%
Full result on euroncap.com (opens in new tab)
Euro NCAP - Audi S6 Sportback e-tron Base
Tested 2025
Adult Occupant92%
Child Occupant91%
Vulnerable Road Users75%
Safety Assist80%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | Audi A6 Avant e-tronperformance | Audi S6 Sportback e-tronBase |
|---|---|---|
| Battery warranty | 8 years | Not available |
| Battery warranty distance | 160,934 km | Not available |
Buying options
Get a quote
Audi A6 Avant e-tron
Used on AutoTraderLease deals
Audi S6 Sportback e-tron
Used on AutoTraderLease deals
Frequently asked questions
Is the Audi S6 Sportback e-tron worth the extra £21,425 over the Audi A6 Avant e-tron?
The Audi S6 Sportback e-tron costs £21,425 more than the Audi A6 Avant e-tron. For that premium it adds 124 kW more power. The Audi A6 Avant e-tron is not just cheaper - it also offers 26 miles more WLTP range. On EVcarsguide's combined category scores, the Audi A6 Avant e-tron comes out ahead overall.
Which is cheaper to own over 5 years, the Audi A6 Avant e-tron or the Audi S6 Sportback e-tron?
The Audi A6 Avant e-tron is £21,425 cheaper to buy. Running costs are almost identical - about £152 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Audi A6 Avant e-tron comes out roughly £21,505 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 Avant e-tron and Audi S6 Sportback e-tron like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 364 miles for the Audi A6 Avant e-tron and 342 miles for the Audi S6 Sportback e-tron - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Audi A6 Avant e-tron goes roughly 22 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 21-21 minutes.
Which is easier to park and drive in town, the Audi A6 Avant e-tron or the Audi S6 Sportback e-tron?
The Audi A6 Avant e-tron is the easier car for tight UK car parks: it is 36 mm narrower than the Audi S6 Sportback e-tron. In a standard 2,400 mm bay that leaves about 513 mm of total clearance for the Audi A6 Avant e-tron and about 477 mm of total clearance for the Audi S6 Sportback e-tron.
Which battery will hold up better as a used buy, the Audi A6 Avant e-tron or the Audi S6 Sportback e-tron?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the Audi A6 Avant e-tron and 84% for the Audi S6 Sportback e-tron. 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 A6 Avant e-tron comparisons
More Audi S6 Sportback e-tron 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 Avant e-tron and Audi S6 Sportback e-tron rank among the best family EVsWhere the Audi A6 Avant e-tron and Audi S6 Sportback e-tron rank among long-range EVsWhere the Audi A6 Avant e-tron and Audi S6 Sportback e-tron rank among the best motorway EVsWhere the Audi A6 Avant e-tron and Audi S6 Sportback e-tron rank among the best city EVsWhere the Audi A6 Avant e-tron and Audi S6 Sportback e-tron rank among the cheapest EVs to runWhere the Audi A6 Avant e-tron and Audi S6 Sportback e-tron rank among EVs with the biggest boots
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 .